Pinpoint tests (Discovery 3)

G1066520p1: Left Front Sensor Low Frequency Actuator Circuit

G1066520t1: Check actuator circuit for short to ground

1. Ignition is off.

2. Disconnect the left front sensor low frequency actuator electrical connector, C2198.

3.

4. Measure the resistance between: C2198, harness side - Pin 2; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t5.
No - Go to detailed check G1066520t3.

G1066520t2: Check actuator circuit for short to power

1. Measure the resistance between: C2198, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t6.
No - Go to detailed check G1066520t4.

G1066520t3: Check actuator circuit for short to ground

1. Measure the resistance between: C2198, harness side - Pin 1; Battery - Negative Terminal



Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t7.
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t4: Check actuator circuit for short to power

1. Measure the resistance between: C2198, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t8.
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t5: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.

2.

3. Measure the resistance between: C2198, harness side - Pin 2; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2243 and C2245. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t6: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.

2.

3. Measure the resistance between: C2198, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2243 and C2245. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t7: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.

2.


3. Measure the resistance between: C2198, harness side - Pin 1; Battery - Negative Terminal



Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2243 and C2245. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t8: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.

2.


3. Measure the resistance between: C2198, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2243 and C2245. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t9: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 14; C2198, Harness Side - Pin 2



Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. The circuit contains intermediate connectors, C2243 and C2245. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - Go to detailed check G1066520t10.

G1066520t10: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 13; C2198, Harness Side - Pin 1

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. The circuit contains intermediate connectors, C2243 and C2245. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - INSTALL new front left sensor low frequency actuator. (86.53.16)

Detailed Check G1066520p2: Right Front Sensor Low Frequency Actuator Circuit

G1066520t11: Check actuator circuit for short to ground

1. Ignition is off.

2. Disconnect the right front sensor low frequency actuator electrical connector, C2199.



3. Measure the resistance between: C2199, harness side - Pin 2; Battery - Negative Terminal



Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t15
No - Go to detailed check G1066520t13

G1066520t12: Check actuator circuit for short to power

1. Measure the resistance between: C2199, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t16
No - Go to detailed check G1066520t14

G1066520t13: Check actuator circuit for short to ground

1. Measure the resistance between: C2199, harness side - Pin 1; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t17
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t14: Check actuator circuit for short to power

1. Measure the resistance between: C2199, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t18.
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t15: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2199, harness side - Pin 2; Battery - Negative Terminal



Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2242 and C2244. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t16: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2199, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2242 and C2244. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t17: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.





2. Measure the resistance between: C2199, harness side - Pin 1; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2242 and C2244. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t18: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2199, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. The circuit contains intermediate connectors, C2242 and C2244. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t19: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 16; C2199, Harness Side - Pin 2

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. The circuit contains intermediate connectors, C2242 and C2244. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - Go to detailed check G1066520t20.

G1066520t20: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 15; C2199, Harness Side - Pin 1

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. The circuit contains intermediate connectors, C2242 and C2244. Refer to the wiring diagram for additional information. Clear the DTC and perform the On-Demand Self-Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - INSTALL new front right sensor low frequency actuator. (86.53.16)

Detailed Check G1066520p3: Left Rear Sensor Low Frequency Actuator Circuit

G1066520t21: Check actuator circuit for short to ground

1. Ignition is off.

2. Disconnect the electrical connector of the low frequency actuator of the left rear sensor, C2200.



3. Measure the resistance between: C2200, harness side - Pin 2; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t25.
No - Go to detailed check G1066520t23.

G1066520t22: Check actuator circuit for short to power

1. Measure the resistance between: C2200, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t26
No - Go to detailed check G1066520t24

G1066520t23: Check actuator circuit for short to ground

1. Measure the resistance between: C2200, harness side - Pin 1; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Yes - Go to detailed check G1066520t27
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t24: Check actuator circuit for short to power

1. Measure the resistance between: C2200, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t28.
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t25: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2200, harness side - Pin 2; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t26: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2200, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t27: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2200, harness side - Pin 1; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t28: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2200, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t29: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 6; C2200, Harness Side - Pin 2

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - Go to detailed check G1066520t30.

G1066520t30: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 5; C2200, Harness Side - Pin 1

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - INSTALL new rear left low frequency sensor actuator. Tire pressure monitoring system rear antenna (86.53.17)

Detailed Check G1066520p4: Right Rear Sensor Low Frequency Actuator Circuit

G1066520t31: Check actuator circuit for short to ground

1. Ignition is off.

2. Disconnect the electrical connector of the low frequency actuator of the right rear sensor, C2201.



3. Measure the resistance between: C2201, harness side - Pin 2; Battery - Negative Terminal
Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t35
No - Go to detailed check G1066520t33

G1066520t32: Check actuator circuit for short to power

1. Measure the resistance between: C2201, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t36.
No - Go to detailed check G1066520t34.

G1066520t33: Check actuator circuit for short to ground

1. Measure the resistance between: C2201, harness side - Pin 1; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t37
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t34: Check actuator circuit for short to power

1. Measure the resistance between: C2201, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - Go to detailed check G1066520t38
No - No faults, perform On Demand Self Test (ODST) to check. Find out the cause of possible intermittent fault.

G1066520t35: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2201, harness side - Pin 2; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t36: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2201, harness side - Pin 2; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t37: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2201, harness side - Pin 1; Battery - Negative Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t38: Check for short circuit in wiring harness and unit

1. Disconnect the tire pressure monitoring system module connector, C2447.



2. Measure the resistance between: C2201, harness side - Pin 1; Battery - Positive Terminal

Resistance less than 10,000 ohms?

Да - REPAIR the short circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify the fault is corrected.
No - INSTALL a new tire pressure monitoring system module.

G1066520t39: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 8; C2201, Harness Side - Pin 2

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - Go to detailed check G1066520t40.

G1066520t40: Check actuator circuit for high resistance

1. Measure the resistance between: C2447, harness side - Pin 7; C2201, Harness Side - Pin 1

Is the resistance greater than 5 ohms?

Да - REPAIR the high resistance in the circuit. Refer to the wiring diagram for additional information. Clear the DTC and perform the On Demand Self Test (ODST) using the manufacturer approved diagnostic system to verify that the fault is corrected.
No - INSTALL new rear right low frequency sensor actuator. Rear Tire Pressure Monitoring System Antenna (86.53.17)

Detailed Check G1066520p5: Missing, Incompatible, or Malfunctioning Low Tire Pressure Sensor or Receiver

G1066520t41: Check the correct installation of the wheel with the tire and the low pressure sensor in the tire

1. Make sure that the full-size wheel and tire are equipped with a low tire pressure sensor. A visual indicator is a metal (and not rubber) the valve stem of the low tire pressure sensor and the impossibility of installing it in a reduced-size spare tire.

Is a full size wheel with a tire and low pressure sensor installed?

Да - Go to detailed check G1066520t42.
No - Install the correct wheel and tire or low pressure sensor operating at the correct frequency according to the instructions in the manufacturer's recommended diagnostic system (appendix "New Low Tire Pressure Sensor").

G1066520t42: Check if additional DTCs are displayed

1. Remove the TPMS power supply circuit fuse and reinsert it. Clear the DTCs and let the vehicle sit for 15 minutes, then drive the vehicle at a speed of at least 15.5 mph (25 km/h) without stopping for at least 10 minutes. Note: If the vehicle speed drops below this value, the driving time for the test should be increased. Using the manufacturer's recommended diagnostic system and the data logger signal "TPMS Status - Learn Mode Status" confirms the test is complete when the value returns to "Off".

2. Check for additional DTCs C1A5631, C1A5831, C1A6031, C1A6231 with the same time stamps.

Are all four DTCs logged in the tire pressure monitoring system module with the same time stamp?

Да - Replace the tire pressure monitoring system module.
No - Go to detailed check G1066520t43.

G1066520t43: Check the position of the faulty low tire pressure sensor

1. Check for tire pressure monitoring system DTCs.

Are any DTC C1AXX31 codes logged?

Да - Install the correct low pressure sensor operating at the correct frequency, as specified in the manufacturer's recommended diagnostic system (Appendix "New Low Pressure Sensor in Tire"), in the position corresponding to the registered DTC. Low Pressure Sensor in Tire (74.10.05)
No - No further action is required. Note: Using the manufacturer's recommended diagnostic system and the data logger signal "Tire Pressure Monitoring System Status - Learn Successfully Completed" confirm that the test has been completed successfully.

Detailed check G1066520p6: Localization failure

G1066520t44: Check if additional DTCs are displayed

1. Check if the following additional DTCs are displayed: C1A5711, C1A5712, C1A5713. C1A5911, C1A5912, C1A5913, C1A6111, C1A6112, C1A6113, C1A6311, C1A6312, C1A6313.

Are any of the above DTCs logged?

Да - See DTC Index and Corrective Actions.
No - Go to detailed check G1066520t45.

G1066520t45: Check if additional DTCs are displayed

1. Check if the following additional DTCs are displayed: C1A5631, C1A5831, C1A6031, or C1A6231

Are DTCs C1A5631, C1A5831, C1A6031, or C1A6231 also logged?

Да - See DTC Index and Corrective Actions.
No - Go to detailed check G1066520t46.

G1066520t46: Check the installation of the activator

1. Check the correct installation of the activator. (86.53.16) Rear antenna of the tire pressure monitoring system (86.53.17)

Is the activator installed correctly?

Да - Go to detailed check G1066520t47.
No - Correct if necessary. (86.53.16) Rear antenna of the tire pressure monitoring system (86.53.17)

G1066520t47: Check actuator wiring harness for short circuit

1. Locate and remove the blue L connector.

2. Measure the resistance in the corresponding circuits of the activator in the blue connector.

Resistance less than 1 ohm?

Да - A value less than 1 ohm indicates a short circuit, please correct the fault.
No - Install the correct low pressure sensor operating at the correct frequency, as instructed in the manufacturer's recommended diagnostic system (New Low Pressure Sensor Appendix), in the position corresponding to the registered DTC.

Detailed Check G1066520p7: Spare Tire Low Pressure Sensor Inoperative

G1066520t48: Find out the type of spare wheel and tire installed

1. Find out the type of spare wheel and tire installed.

Reduced size spare tire?

Да - Low tire pressure sensors are not installed in the undersize spare tires. Low tire pressure sensors are installed in the full-size spare tires only. The DTC should be ignored and no repair is required.
No - Go to detailed check G1066520t49.

G1066520t49: Make sure the spare tire has a low pressure sensor

1. Make sure that the spare tire has a low pressure sensor, taking into account the following data: a) A visual indication of a low pressure sensor in a tire is a metal valve stem instead of a rubber one.

Is a low tire pressure sensor installed?

Да - Go to detailed check G1066520t50.
No - A new low tire pressure sensor must be installed. Note: Refer to the note above the DTC Index regarding replacement of components that may be covered by the manufacturer's warranty. Refer to the appropriate section of the repair manual.

G1066520t50: Check the operation of the pressure sensor in the spare tire

1. Completely deflate the spare tire by placing it next to the vehicle.

2. Turn on the ignition and check that the low pressure warning for the spare tire appears on the instrument panel for about 20 seconds.

3. Without removing the spare tire from the vehicle, bring the tire pressure to the correct level. See the section "Inspection and testing", warnings "Check the tire pressure".

4. Turn on the ignition and make sure that there is no low pressure warning for the spare tire on the instrument panel.

Does the spare tire pressure warning light still appear on your instrument cluster?

Да - Go to detailed check G1066520t51.
No - No repairs required. It is possible that the customer has placed some objects in the luggage compartment that interfere with radio frequency reception.

G1066520t51: Verify that the low tire pressure sensor code is programmed correctly in the module

1. Remove the low tire pressure sensor. Write down the 8-digit hexadecimal code printed on the housing.

2. Using the recommended diagnostic system, read the spare tire sensor code from the module. Refer to the appropriate procedure in the repair manual.

3. Compare the codes in steps 1 and 2.

Do the codes match?

Да - Replace the low pressure sensor in the spare tire. Refer to the relevant installation section in the workshop manual. The sensor identification code must be programmed into the tire pressure monitoring system module using the manufacturer's recommended diagnostic system. The identification code is located on the label of the sensor kit packaging and is also imprinted on the housing of each sensor.
No - Program the sensor code recorded in step 1 into the module using the recommended diagnostic system. The identification code is located on the sensor kit packaging label and is also imprinted on the housing of each sensor. Repeat the test to ensure that the system is operating correctly. Go to Detailed Test G1066520t50.