B3875

DTC B3875

CIRCUIT DESCRIPTION
The body control module, (BCM) controls and monitors the state of the Wiper HI Relay control circuit. The wiper hi relay is used to control the hi speed wiper function. The BCM supplies a negative voltage to the relay. The relay is supplied B+ from the WIPER/WS fuse. The voltage level from the BCM should be high while the relay is inactive. The voltage should be near ground when the BCM commands the relay ON.

CONDITIONS FOR RUNNING THE DTC
- The ignition is ON.
- The ignition voltage is between 9-18.5 volts.

CONDITIONS FOR SETTING THE DTC
The following conditions will cause the DTC to set:
- The BCM detects an over current condition in the Wiper HI Relay control circuit for over 1 second.
- The BCM does not detect the load of the Wiper HI Relay or the circuit is open.

ACTION TAKEN WHEN THE DTC SETS
The BCM will not activate the Wiper HI Relay.

CONDITIONS FOR CLEARING THE DTC
- This DTC will change from current to history once the ignition is turned OFF and the BCM is asleep.
- A history DTC will clear after 100 ignition cycles if the condition is no longer present.

TEST

Steps 1 - 7: