Circuit Description
The adjustable pedal motor control circuits are controlled through the adjustable pedal relay. The adjustable pedal relay may be controlled by either the driver seat module (DSM) or the adjustable pedal switch. In an inactive state both of the relay switch contacts are closed to the ground circuit. The relay coils are energized when battery voltage is supplied through the relay control circuits by the DSM or the adjustable pedal switch. When the forward control or rearward control relay coil is energized the appropriate motor control circuit is switched to the battery voltage supply circuit contact.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3607 Adjustable Foot Pedal Motor Circuit
Conditions for Running the DTC
Battery voltage to the seat module must be within 7-16 volts.
Conditions for Setting the DTC
The DSM detects one of the following conditions on either of the adjustable pedal relay control circuits:
| • | An open or short to voltage while the DSM output is in an inactive state |
| • | A short to ground while the DSM output is in an active state |
Action Taken When the DTC Sets
The adjustable pedal system will be disabled.
Conditions for Clearing the DTC
| • | The DTC will be stored as a history code when the fault is no longer present. |
| • | A history DTC will be cleared after completing 100 consecutive ignition cycles, or by using the scan tool clearing DTCs feature. |
Diagnostic Aids
If the DTC is only found in history, the fault may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections .
Step | Action | 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 | |
2 |
Is the DTC current? | Go to Step 4 | Go to Step 3 |
3 |
Does the DTC reset? | Go to Step 5 | Go to Testing for Intermittent Conditions and Poor Connections |
4 | Operate the adjustable pedal switch in both directions. Does the pedal assembly function in both directions? | Go to Step 11 | Go to Step 8 |
5 |
Does the pedal assembly function in both directions? | Go to Step 10 | Go to Step 6 |
6 |
Does the test lamp illuminate on either circuit? | Go to Step 14 | Go to Step 7 |
7 | Using a test lamp connected to battery voltage, probe each of the relay control circuit terminals from the DSM in the adjustable pedal assembly harness connector. Does the test lamp illuminate on either circuit? | Go to Step 13 | Go to Step 18 |
8 |
Does the test lamp illuminate on either circuit? | Go to Step 11 | Go to Step 9 |
9 | Using a test lamp connected to ground, probe each of the relay control circuit terminals from the DSM in the adjustable pedal assembly harness connector. Does the test lamp illuminate on either circuit? | Go to Step 12 | Go to Step 15 |
10 | Test the relay control circuits in the driver seat harness for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 18 |
11 | Test the relay control circuits from the DSM for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 18 |
12 | Test the relay control circuits from the adjustable pedal switch for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 16 |
13 | Test the relay control circuits from the DSM for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 18 |
14 | Test the relay control circuits from the adjustable pedal switch for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
15 | Test the adjustable pedal relay ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 17 |
16 | Inspect for poor connections at the adjustable pedal switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
17 | Inspect for poor connections at the adjustable pedal relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 20 |
18 | Inspect for poor connections at the DSM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 21 |
19 | Replace the adjustable pedal switch. Did you complete the replacement? | Go to Step 22 | -- |
20 | Replace the adjustable pedal relay. Did you complete the replacement? | Go to Step 22 | -- |
21 | Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 22 | -- |
22 |
Does the DTC reset? | Go to Step 2 | System OK |
