Pinpoint Test D: DTC C1266 - Abs Valve Power Relay Circuit Failure

CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

D1 CHECK FOR VOLTAGE TO THE ABS MODULE
- Key in OFF position.
- Disconnect: ABS Module C135
- Measure the voltage between ABS module C135-25, circuit SBB12 (GN/RD), harness side and ground.
- Is the voltage greater than 10 volts?
1. YES : Go to D2.
2. NO : VERIFY that BJB fuse 12 (20A) is OK, If OK, REPAIR circuit SBB12 (GN/RD). CLEAR the DTCs. REPEAT the self-test.
  If the fuse is open, REFER to the appropriate Systems Wiring Diagrams article to identify possible causes of the circuit short.
D2 CHECK CIRCUIT GD120 (BK/GN) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between ABS module C135-38, circuit GD120 (BK/GN), harness side and ground.
- Is the resistance less than 5 ohms?
1. YES : Go to D3.
2. NO : REPAIR circuit GD120 (BK/GN). CLEAR the DTCs. REPEAT the self-test.
D3 CHECK FOR CORRECT ABS MODULE OPERATION
- Check ABS module C135 for:
  - corrosion.
  - pushed-out pins.
  - spread terminals.
- Connect the ABS module connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CLEAR the DTCs. REPEAT the self-test.
2. 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 self-test.