The endgate module controls operation of the endgate window motor by supplying ground for the endgate window regulator down signal and endgate window regulator up signal circuits. These circuits are used to enable the endgate window motor relays. If the endgate module detects a short to ground or voltage on the endgate window regulator down signal or endgate window regulator up signal circuits, a DTC is set.
This diagnostic procedure supports the following DTCs:
• | DTC B3964 Endgate Window Motor Up Circuit |
• | DTC B3965 Endgate Window Motor Down Circuit |
The endgate module detects a short to ground or voltage on the endgate window regulator down signal or endgate window regulator up signal circuits.
• | Stores a current DTC B3964 or B3965 in endgate module memory. |
• | Stores a history DTC B3964 or B39650 in endgate module memory. |
• | The endgate module no longer detects a current DTC B3964 or B3965 in endgate module memory. |
• | The DTC is cleared using a scan tool. |
• | An intermittent short to ground or voltage in the endgate window up or down relay may cause an intermittent malfunction. |
• | If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections . |
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Body Rear End Schematics Connector End View Reference: Body Rear End Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
Does the endgate window go Up and Down? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | |
3 | Test the endgate window regulator down signal and endgate window regulator up signal circuits for a short to ground or voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 6 | Go to Step 4 |
4 | Inspect for poor connections at the harness connector of the endgate window regulator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
5 |
Did you complete the replacement? | Go to Step 6 | -- |
6 |
Does the DTC reset? | Go to Step 2 | System OK |