For 1990-2009 cars

### Circuit Description

The PCM receives messages from the ABS controller to activate the traction control system. When messages are not transmitted properly between the ABS controller and PCM, a DTC P1602 will set.

### Conditions for Setting the DTC

Important: The ABS controller circuit is continuously checked when the ignition is ON.

DTC P1602 will set if:

• | No message is received from the ABS controller

| OR

• | A certain number of incorrect messages have been sent to the PCM.

### Diagnostic Aids

• | Check the tightness of the female terminal grip with a spare male terminal.

• | If DTC P1602 is set, traction control will be disabled.