Circuit Description
The battery rundown protection function allows the body control module (BCM) to disable the courtesy lamps and the underhood lamp 40 minutes after the ignition switch is turned OFF. The BCM monitors the output of the inadvertent power relay on Inadvertent Power Relay control circuit.
Conditions for Running the DTC
The system voltage must be between 9.0 and 16.0 volts.
Conditions for Setting the DTC
| • | When the Inadvertent Power Relay control circuit is shorted to ground. |
| • | When there is an open or short to battery voltage on the Inadvertent Power Relay ground circuit. |
| • | An open CTSY fuse or open in the battery supply circuit to the Inadvertent Power Relay will also set this code. |
| • | The above conditions must be met for 0.5 seconds. |
Action Taken When the DTC Sets
The following lamps will be disabled:
| • | The dome |
| • | The glove box |
| • | The reading (if equipped) |
| • | The underhood |
| • | The vanity (if equipped) |
Conditions for Clearing the MIL/DTC
| • | This DTC will clear current status after the condition for setting the fault is corrected. |
| • | A history DTC will clear after 100 consecutive ignition cycles without a fault present. |
| • | Use a scan tool in order to clear the history DTC(s). |
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Power Distribution Schematics in wiring systems, or Body Control System Schematics in Body Control Systems. | ||||
1 | Did you perform the Engine Electrical Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the inadvertent power relay turn ON and OFF with each command? | -- | Go to Diagnostic Aids | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 10 |
4 |
Does the test lamp turn ON and OFF with each command? | -- | Go to Step 8 | Go to Step 5 |
5 | Does the test lamp remain illuminated with each command? | -- | Go to Step 7 | Go to Step 6 |
6 | Test the control circuit of the inadvertent power relay for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 9 |
7 | Test the control circuit of the inadvertent power relay for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 9 |
8 | Inspect for poor connections at the inadvertent power relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 11 |
9 | Inspect for poor connections at the harness connector of the body control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 12 |
10 | Repair the coil side feed circuit of the inadvertent power relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 13 | -- |
11 | Replace the inadvertent power relay. Did you complete the replacement? | -- | Go to Step 13 | -- |
12 |
Did you complete the replacement? | -- | Go to Step 13 | -- |
13 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
