Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT
- CHECK THE CAN + FOR SHORT CIRCUIT TO BATTERY
Measure the resistance between pins 06 (Y) and 16 (NW) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 2.
- CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION POSITIVE
Turn the ignition switch to the ON position.
Measure the resistance between pins 06 (Y) and 09 (WU) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 3.
- CHECK THE CAN + FOR SHORT CIRCUIT TO GROUND
Turn the ignition switch to the OFF position.
Measure the resistance between pins 06 (Y) and 04 (BK) of the diagnostic connector (FC53).
Measure the resistance between pins 06 (Y) and 05 (BK) of the diagnostic connector (FC53).
Is either resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 4.
- CHECK THE CAN + FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
Turn the ignition switch to the ACCESSORY position.
Measure the resistance between pins 06 (Y) and 08 (WR) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 5.
- CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
Turn the ignition switch to the ON position.
Measure the resistance between pins 06 (Y) and 01 (WU) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 6.
- CHECK THE CAN - FOR SHORT CIRCUIT TO BATTERY
Measure the resistance between pins 14 (G) and 16 (NW) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 7.
- CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION POSITIVE
Turn the ignition switch to the ON position.
Measure the resistance between pins 14 (G) and 09 (WU) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 8.
- CHECK THE CAN - FOR SHORT CIRCUIT TO GROUND
Turn the ignition switch to the OFF position.
Measure the resistance between pins 14 (G) and 04 (BK) of the diagnostic connector (FC53).
Measure the resistance between pins 14 (G) and 05 (BK) of the diagnostic connector (FC53).
Is either resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 9.
- CHECK THE CAN - FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
Turn the ignition switch to the ACCESSORY position.
Measure the resistance between pins 14 (G) and 08 (WR) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: Go to step 10.
- CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
Turn the ignition switch to the ON position.
Measure the resistance between pins 06 (Y) and 01 (WU) of the diagnostic connector (FC53).
Is the resistance less than 10,000 ohms?
YES: REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.
NO: No circuit fault found in Controller Area Network. Check for DTCs indicating an individual module fault. Refer to the DTC index.