Diagnostic Routine D
Diagnostic Routine D
Diagnostic Overview
The Adjustable Pedals are Inoperative or Do Not Operate Correctly - Using the Pedal Adjust Switch
Refer to Wiring Diagram Set 127 for schematic and connector information Electrical Diagrams.
Normal Operation and Fault Conditions
The SCCM (Steering Column Control Module) receives fused battery voltage from the BCM (Body Control Module).
When the pedal adjust switch is pressed, the SCCM (Steering Column Control Module) sends current to the adjustable pedal motor along one circuit and the current returns to the SCCM (Steering Column Control Module) along another circuit, which is grounded through the SCCM (Steering Column Control Module), to move the pedal in the desired direction. The current flow through the circuits is reversed if the switch commands the pedals to be moved in the opposite direction.
DTC Fault Trigger Conditions
Visual Inspection and Diagnostic Pre-checks
- Inspect the BCM (Body Control Module) fuses 23 (15A) and 24 (15A).
Special Tool(s)
Pinpoint Test
1. CHECK THE ADJUSTABLE PEDAL MOTOR AND CABLE INSTALLATION
1. Check the adjustable pedal motor and cable for correct installation.
Are the motor and cable correctly installed?
2. INSPECT FOR FOREIGN OBJECTS OR MATERIAL
1. Inspect the adjustable brake pedal and accelerator assemblies for foreign material causing a binding condition.
Are the pedal assemblies free from foreign material?
3. CHECK FOR VOLTAGE AT THE SCCM (Steering Column Control Module)
1. Ignition OFF.
2. Disconnect SCCM (Steering Column Control Module) C2414A.
3. Measure:
Is the voltage greater than 11 volts?
4. CHECK THE VOLTAGE INPUT AT THE SCCM (Steering Column Control Module)
1. Disconnect SCCM (Steering Column Control Module) C2414B.
2. Measure:
Is the voltage greater than 11 volts?
5. CHECK THE SCCM (Steering Column Control Module) LOGIC GROUND CIRCUIT FOR AN OPEN
1. Measure:
Is the resistance less than 3 ohms?
6. CHECK THE SCCM (Steering Column Control Module) GROUND CIRCUIT FOR AN OPEN
1. Measure:
Is the resistance less than 3 ohms?
7. CHECK THE ADJUSTABLE PEDAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
1. Disconnect Adjustable Pedal Motor.
2. Ignition ON.
3. Measure:
Is any voltage present?
8. CHECK THE ADJUSTABLE PEDAL MOTOR CIRCUITS FOR A SHORT TO GROUND
1. Measure:
Are the resistances greater than 10,000 ohms?
9. CHECK THE ADJUSTABLE PEDAL MOTOR CIRCUITS FOR AN OPEN
1. Disconnect Adjustable Pedal Motor.
2. Measure:
Are the resistances less than 3 ohms?
10. CHECK FOR SCCM (Steering Column Control Module) OUTPUT
1. Ignition OFF.
2. Connect SCCM (Steering Column Control Module) C2414A.
3. Connect SCCM (Steering Column Control Module) C2414B.
4. NOTICE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
NOTE: When the adjustable pedal motor connector is disconnected, the SCCM (Steering Column Control Module) provides voltage in 1 second intervals only, due to the open circuit in the Hall-effect sensor circuit.
Measure:
5. Press the adjustable pedal switch in the forward position and verify the test light is illuminated.
6. Press the adjustable pedal switch in the rearward position and verify the test light is illuminated.
Does the test light illuminate when the adjustable pedal switch is pressed in each direction?
11. CHECK THE SCCM (Steering Column Control Module) FOR CORRECT OPERATION
1. Ignition OFF.
2. Disconnect and inspect all SCCM (Steering Column Control Module) C2414B.
3. Repair:
- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary
4. Reconnect the SCCM (Steering Column Control Module) connectors. Make sure they seat and latch correctly.
5. Operate the system and determine if the concern is still present.
Is the concern still present?
