Possible Causes

Circuit (GY) open, short to ground or short to voltage
DLC D-01
GEM

CAUTION:

Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.

NO INTERNATIONAL STANDARDS ORGANIZATION (ISO) 9141 COMMUNICATIONS NETWORK COMMUNICATION - PINPOINT TEST REFERENCE

PINPOINT TEST 6		NO INTERNATIONAL STANDARDS ORGANIZATION (ISO) 9141 COMMUNICATIONS NETWORK COMMUNICATION
STEP	INSPECTION		ACTION
1	CHECK THE DLC D-01 PINS FOR DAMAGE NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the Pinpoint Test. Key OFF. Disconnect the scan tool cable from the DLC D-01. Inspect DLC D-01 pin 7 for damage. Is the DLC D-01 pin 7 OK?	Yes	Go to next step.
1		No	Repair the DLC D-01. Repeat the network test with the scan tool.
2	CHECK CIRCUIT (GY) BETWEEN THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE AND THE DLC FOR AN OPEN Disconnect: ABS module 0413-102. Measure the resistance between the ABS module 0413-102 pin 16, circuit (GY), harness side and the DLC D-01 pin 7, circuit (GY), harness side. Is the resistance less than 5 ohms?	Yes	Go to next step.
2		No	Repair the circuit. Repeat the network test with the scan tool.
3	CHECK THE ISO 9141 NETWORK FOR A SHORT TO GROUND Measure the resistance between the DLC D-01 pin 7, circuit (GY), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes	Go to next step.
3		No	Repair the circuit. Repeat the network test with the scan tool.
4	CHECK THE ISO CIRCUIT FOR A SHORT TO VOLTAGE Key ON. Measure the voltage between the DLC D-01 pin 7, circuit (GY), harness side and ground. Is any voltage indicated?	Yes	Repair the circuit. Repeat the network test with the scan tool.
4		No	Go to next step.
5	CHECK FOR CORRECT ABS MODULE OPERATION Disconnect the ABS module connector. Check for: corrosion damaged pins pushed-out pins Connect the ABS module connectors and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	Install a new ABS module. see Anti-Lock Brake System (ABS) Module . Repeat the network test with the scan tool.
5		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. Clear the DTCs. Repeat the network test with the scan tool.