B3799

DTC B3799

CIRCUIT DESCRIPTION
The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the body control module. The rear wiper/washer switch is a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the body control module. The rear wiper/washer switch has continuity at all times and the body control module expects a rear wiper/washer switch signal voltage in all switch positions including OFF.

CONDITIONS FOR RUNNING THE DTC
- Battery voltage must be between 9.0-16.0 volts.
- The rear wiper/washer switch is active or inactive.

CONDITIONS FOR SETTING THE DTC
The rear wiper/washer switch signal circuit is higher or lower than normal switch operation allows.

ACTION TAKEN WHEN THE DTC SETS
- The DTC will be current for as long as the fault is present.
- The rear wiper/washer system will be disabled for as long as the DTC is current.

CONDITIONS FOR CLEARING THE DTC
- The DTC status will change from current to history when the fault is no longer present.
- A history DTC will be cleared after 100 error free ignition cycles.

TEST DESCRIPTION

Steps 1-4:

Steps 5-10:

Steps 11-13:

The numbers below refer to the step numbers on the diagnostic table.
2. This step verifies that the fault is current.
3. This code may be set inadvertently.
4. This step tests the resistance through the rear wiper switch. The measured resistance will be highest in the OFF position and reduce as the switch is turned from positions 1 through 3.
11. If the code was set inadvertently, the new calibration files will have the code turned off.