P137

Serial Data (CKT 800) Line:

CIRCUIT DESCRIPTION:
This diagnostic test checks for the loss of or invalid Antilock Brake/Traction Control System serial data to the PCM. When such a condition exists for 5 seconds Code P137 will set.

TEST CONDITION(S):
1. Code P012 not set.
2. Engine speed 500 RPM or greater for 20 seconds.

FAILURE CONDITION(S):
Invalid or no serial data from the Antilock Brake Traction Control System being received by the PCM for 5 seconds.

ACTION TAKEN:
PCM sets all serial data from the Antilock/Brake Traction Control System to zero.

DIAGNOSIS:
Follow the diagnostic procedures for BCM Code B332.