B3875

DTC B3875

CIRCUIT DESCRIPTION
The body control module (BCM) monitors the wiper high speed relay control circuit only when wiper high speed mode is active. When the wiper high speed mode is requested, the BCM responds by applying a ground through the wiper high speed relay control circuit to the coil side of the relay, energizing the wiper high relay.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B3875 Wiper High Speed Relay Circuit

CONDITIONS FOR RUNNING THE DTC
This DTC can set only when the BCM output to the wiper high relay is be requested by PCU.

CONDITIONS FOR SETTING THE DTC
The BCM will set this DTC if it detects a short to ground or an open in the control circuit of the wiper high relay.

ACTION TAKEN WHEN THE DTC SETS
The BCM will not activate the output to the relay.

CONDITIONS FOR CLEARING THE DTC
- The current DTC will become history when the request for the output is removed or when the condition for setting the fault is corrected.
- The history DTC will clear after 50 consecutive ignition cycles without a fault present.

TEST DESCRIPTION

Step 1 - Step 13:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests for constant ground in the control circuit of the wiper relay.
4. This step verifies that the BCM is applying a ground through the control circuit to the wiper relay.
5. This step tests for an open in the battery positive voltage circuit of the wiper relay.