B2285

DTC B2285

CIRCUIT DESCRIPTION
The driver door module (DDM) and passenger door module (PDM) each have a high and low power feed.The low power feed, battery 1, is used to provide power for the door module logic and internal driver operation. The high power feed, battery 2, is used to provide power for systems that draw higher amounts of current. The door modules monitor the voltage level at battery 1 and battery 2 to determine if the voltage level is out of range. If the voltage level is out of range, a DTC is set.

CONDITIONS FOR SETTING THE DTC
- The door module detects battery 1 or battery 2 voltage range under 8.5 volts or over 16.3 volts.
- Condition must be present for greater than 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
- Stores a history DTC B2282, B2283, B2284 or B2285 in the door module memory.
- These DTCs can only be set as a history code even if the malfunction is current.
- No driver warning message will be displayed for this DTC.

CONDITIONS FOR CLEARING THE DTC
- The door module no longer detects battery 1 or battery 2 voltage below 8.5 volts or higher than 16.3 volts for greater than 2 seconds.
- The DTC is cleared using the IPC clearing feature, or
- The DTC is cleared using a scan tool.

DIAGNOSTIC AIDS
- The following conditions may cause an intermittent malfunction:
- There is an intermittent open or short to ground in a battery 1 or battery 2 circuit.
- The battery voltage is out of range.
- A charging system malfunction.
- Using a scan tool, select DCM Data display and monitor battery 1 and battery 2 voltage while operating the door locks and heated mirrors. This can determine if battery 1 or battery 2 voltage is affected by these devises and can help duplicate the malfunction.
- If the DTC does not reset after the code is cleared, then the problem may be intermittent.

TEST DESCRIPTION

Steps 1-3:

Steps 4-7:

Steps 8-11:

Steps 12-18:

The number(s) below refer to the step number(s) on the diagnostic table.
2. This test verifies if the vehicle's Starting/Charging system is functioning properly.
3. This test verifies if the door module is functioning properly.
6. This tests for a short to ground in the door lock actuator control circuits.
7. This tests for a short to ground in the heated mirror element supply voltage circuit.
8. This tests for a short to ground in the door lock actuator motor.
9. This tests for a short to ground in the mirror heater.