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Pinpoint Test A: No Communication With The Anti-Lock Brake System (Abs) Module

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

A1 CHECK VOLTAGE TO THE ABS MODULE
- Key in OFF position.
- Disconnect: ABS Module C135.
- Key in ON position.
- Measure the voltage between ground and ABS module C135:
  - pin 2, circuit 601 (LB/PK), harness side.
  - pin 32, circuit 1844 (LG/RD), harness side.
    
    Fig 1: Checking Voltage To ABS Module
- Are the voltages greater than 10 volts?
Yes : GO to A1.

No : VERIFY SJB fuse 18 (10A) is OK. If OK, REPAIR circuit 1844 (LG/RD) for an open.

VERIFY BEC fuse 65 (30A) is OK. If OK, REPAIR circuit 601 (LB/PK) for an open.

REPEAT the self-test.
A2 CHECK THE ABS MODULE GROUND
- Key in OFF position.
- Measure the resistance between ground and ABS module C135:
  - pin 16, circuit 1205 (BK), harness side.
  - pin 45, circuit 1205 (BK), harness side.
    
    Fig 2: Checking ABS Module Ground
- Are the resistances less than 5 ohms?
Yes : CHECK the module communications network. REFER to MODULE COMMUNICATIONS NETWORK .

No : REPAIR the affected circuit(s) for an open. REPEAT the self-test.