PZ2042

Wiring Diagram:

CIRCUIT DESCRIPTION

The PZM sends Universal Asynchronous Receiver Transmitter (UART) data messages to controllers for the bus and maintains a counter which increments with each message to the module. When the module responds to the message, the counter is cleared.

DTC WILL SET WHEN

If the PZM's message counter for this device exceeds 20.

ACTION TAKEN (BY PZM)

The PZM will send a Class 2 message to the Instrument Panel Cluster (IPC) to illuminate the Traction Control Indicator.

DTC WILL CLEAR WHEN

The PZM does not detect the malfunction for one monitoring cycle.

Troubleshooting Hints

1. If DTCs PZ 2056 and PZ 2088 are also current, check for a short to ground or voltage in CKT 800.

2. Ensure that the Antilock Brake/Traction Control System is functioning normally outside of the loss of serial communication, if it is not functioning properly or you are not certain, perform the "ABS System Check,".

3. If the Antilock Brake/Traction Control System is functioning properly, check for proper connection at EBTCM terminal "29," if OK then replace EBTCM.