Circuit Description
The electronic adjustable pedals (EAP) forward and rearward switches are inputs to the driver door module (DDM). The DDM supplies the EAP switch assembly with a battery positive reference voltage. When the EAP switch is operated to the forward or rearward direction the forward or rearward switch signal circuit is closed to the reference voltage. In an active state the EAP forward or rearward switch signal circuit voltage is supplied to the DDM through one of the 806-ohm resistors within the switch assembly. The resistors in the switch assembly enables the DDM to recognize an invalid switch signal.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
| • | DTC B3604 Adjustable Foot Pedal Forward Switch Circuit |
| • | DTC B3605 Adjustable Foot Pedal Rearward Switch Circuit |
Conditions for Running the DTC
The system voltage must be between 9-16 volts.
Conditions for Setting the DTC
| • | The DDM sets a DTC B3604 when the EAP forward switch signal circuit is determined to be shorted to voltage or ground. |
| • | The DDM sets a DTC B3605 when the EAP rearward switch signal circuit is determined to be shorted to voltage or ground. |
Action Taken When the DTC Sets
The EAP system will be disabled.
Conditions for Clearing the DTC
| • | The DTC will be current for as long as the fault is present. |
| • | When the fault is no longer present the DTC will be a history status code. |
| • | The history DTC will be cleared after 100 error-free ignition cycles, or by using the scan tool clearing DTCs feature. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This step tests the resistance through the EAP switch while in an active state.
-
This step tests the EAP switch signal circuit for a short to another circuit within the switch assembly while in an inactive state.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Adjustable Pedal Schematics Connector End View Reference: Adjustable Pedal Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the scan tool display Active? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
Is the resistance at or near the specified value? | 806 ohms | Go to Step 4 | Go to Step 5 | |
Test the appropriate EAP switch signal circuit for continuity to any other circuits within the switch harness connector. Refer to Circuit Testing in Wiring Systems. Is continuity present from the EAP switch signal circuit to any other circuit within the switch assembly? | -- | Go to Step 5 | Go to Step 6 | |
5 | Inspect for poor connections at the harness connector of the EAP switch. 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 9 | Go to Step 7 |
6 | Inspect for poor connections at the DDM. 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 9 | Go to Step 8 |
7 | Replace the EAP switch. Refer to Front Seat Heater Switch Replacement in Seats. Did you complete the replacement? | -- | Go to Step 9 | -- |
8 | Replace the DDM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 9 | -- |
9 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
