Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B3606: Adjustable Foot Pedal Position Sensor CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open or High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
5-Volt Reference | B3606 | B3606 | B3606 | -- |
Adjustable Pedals Position Sensor Signal | B3606 | B3606 | B3606 | -- |
Low Reference | -- | B3606 | -- | -- |
Circuit/System Description
The memory seat module (MSM) monitors the location of the adjustable pedals using a sensor within the brake pedal assembly. The position sensor is supplied with 5-volt reference and ground circuits from the MSM. The position sensor signal circuit is referenced from ground within the MSM. The signal voltage monitored by the MSM ranges from 0.39-4.58 volts and is determined by the wiper location on the resistor within the position sensor. The position sensor circuit voltage level is used by the MSM to determine the position of the adjustable pedals when storing or recalling memory position settings.
Conditions for Running the DTC
System voltage to the MSM must be 7-16 volts.
Conditions for Setting the DTC
The position sensor input to the MSM is not within the 0.39-4.58 volt range.
Action Taken When the DTC Sets
The memory recall functions will be disabled for as long as the DTC is current.
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 100 consecutive ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Adjustable Pedals Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the adjustable pedal assembly.
- Test for less than 10 ohms between the low reference circuit terminal 3 and ground.
- Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.
- Verify the scan tool Pedal Position parameter is less than 0.45 volts.
- Install a 3A fused jumper wire between the signal circuit terminal 2 and the 5-volt reference circuit terminal 1. Verify the scan tool Pedal Position parameter is greater than 4.55 volts.
- If all circuits test normal, replace the adjustable pedal assembly.
| ⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM. |
| ⇒ | If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM. |
| ⇒ | If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM. |
| ⇒ | If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM. |
| ⇒ | If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the MSM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for MSM replacement, setup, and programming |
