B1017

DTC B1017

CIRCUIT DESCRIPTION
The Body Control Module (BCM) internally grounds the driver door unlock relay control circuit for the driver door unlock relay when it receives a switched ground signal from any door lock switch or a keyless entry unlock transmission. When the BCM grounds the driver door unlock relay control circuit the driver door unlock relay is energized and unlocks the the driver door.

CONDITIONS FOR RUNNING THE DTC
- Battery voltage is between 9.0 and 16.0 volts.
- The DTC will set if the driver door unlock function is active or inactive.

CONDITIONS FOR SETTING THE DTC
The DTC will set if the driver door unlock relay control circuit is shorted to ground or open for more then one second.

ACTION TAKEN WHEN THE DTC SETS
- If a short to ground is present on the driver door unlock relay control circuit, the driver door unlock relay will be energized and the driver door lock actuator will be held in the unlock position and will not lock.
- If an open condition is present on the driver door unlock relay control circuit, the driver door will lock but not unlock.

DIAGNOSTIC AIDS
- DTC B1017 could set if the driver door unlock relay winding is open.
- DTC B1017 could also set as current if the battery positive voltage or the DRV LKS fuse is open. If the DRV LKS fuse is open, the cause is most likely one of the following:
- A short to ground in the relay battery positive voltage circuit.
- A short to ground in the driver door lock actuator unlock control circuit.

CONDITIONS FOR CLEARING THE DTC
When the fault is no longer present, the BCM changes the current DTC to a history DTC. The BCM will clear the history DTC after 50 fault free ignition cycles.

TEST DESCRIPTION

Steps 1-7:

Steps 8-14:

The numbers below refer to the step numbers on the diagnostic table.
2. Listen for an audible click when the driver door unlock relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
3. Tests for voltage at the coil side of the driver door unlock relay. The DRV LKS fuse supplies power to the coil side of the rear door unlock relay.
4. Verifies that the body control module is providing ground to the driver door unlock relay.
5. Tests if ground is constantly being applied to the driver door unlock relay.