Pinpoint Test B: Adjustable Brake Pedal Is Inoperative/Does Not Operate Correctly - Using The Memory Position Switches Or Using
Pinpoint Tests
Pinpoint Test B: Adjustable Brake Pedal is Inoperative/Does Not Operate Correctly - Using the Memory Position Switches or Using the Remote Keyless Entry (RKE) Transmitter
Refer to Wiring Diagram Set 127, Adjustable Pedals for schematic and connector information. Diagrams By Number
Normal Operation
When the desired memory position is selected using the memory switch or the Remote Keyless Entry (RKE) transmitter, the Driver Seat Module (DSM) sends voltage to the adjustable pedal motor along circuit CPP01 (WH/OG) to move the pedal forward and along circuit CPP02 (BN) to move the pedal rearward. When voltage is sent to the motor along circuit CPP01 (WH/OG), it returns to the DSM along circuit CPP02 (BN). Likewise, when the voltage is sent to the motor along circuit CPP02 (BN), it returns to the DSM along circuit CPP01 (WH/OG).
The DSM uses a Hall-effect switch attached to the pedal motor to identify the current pedal position. The DSM sends a reference voltage along circuit LPP06 (YE/BU), through the Hall-effect switch and back to the DSM along signal return circuit RPP06 (GN).
The DSM will count the number of Hall-effect switch pulses to the end of travel and store this information for diagnostics.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Adjustable pedal motor
- DSM
PINPOINT TEST B: ADJUSTABLE BRAKE PEDAL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - USING THE MEMORY POSITION SWITCHES OR THE RKE TRANSMITTER
NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
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B1 CHECK THE ADJUSTABLE PEDAL OPERATION WITH THE ADJUSTABLE PEDAL SWITCH
- Press the adjustable pedal switch in each direction for more than one second and observe the adjustable pedals.
- Do the adjustable pedals operate for more than one second in the direction selected using the switch?
Yes
GO to B2.
No
If the pedals do not move at all using the switch, Go To Pinpoint Test A. Pinpoint Test A: Adjustable Brake Pedal Is Inoperative/Does Not Operate Correctly - Using The Adjustable Pedal Switch
If the pedals only move in one second intervals regardless of button operation, Go To Pinpoint Test C. Pinpoint Test C: DTC B1987, B1991 Or B2275
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B2 CHECK THE MEMORY SYSTEM OPERATION
- Set a memory position for the driver seat, exterior mirrors and adjustable pedals to memory SET switch button 1. Refer to Memory Position Programming in Seats. Programming and Relearning
- Select PARK.
- Press the memory SET switch button 1 and observe the following items:
- Driver seat
- Exterior mirrors
- Adjustable pedals
- Do all 3 items move when the button is pressed?
Yes
GO to B3.
No
If all 3 items do not move, REFER to Diagnosis and Testing in Seats to DIAGNOSE the memory SET switch. Testing and Inspection
If only the adjustable pedals do not move, GO to B4.
If only the driver seat does not move, REFER to Diagnosis and Testing in Seats. Testing and Inspection
If only the exterior mirrors do not move, REFER to Diagnosis and Testing in Mirrors. Testing and Inspection
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B3 CHECK THE RKE TRANSMITTER OPERATION
- Set a memory position in the RKE transmitter for the driver seat, exterior mirrors and adjustable pedals. Refer to Remote Memory Activation in Locks. Remote Memory Activation
- Select PARK.
- Press the unlock button on the RKE transmitter and observe the following items:
- Driver seat
- Exterior mirrors
- Adjustable pedals
- Do all 3 items move when the button is pressed?
Yes
GO to B4.
No
If all 3 items do not move, REFER to Diagnosis and Testing in Locks to DIAGNOSE the RKE transmitter. Testing and Inspection
If only the adjustable pedals do not move, GO to B4.
If only the driver seat does not move, REFER to Diagnosis and Testing in Seats. Testing and Inspection
If only the exterior mirrors do not move, REFER to Diagnosis and Testing in Mirrors. Testing and Inspection
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B4 CHECK THE ADJUSTABLE PEDAL MOTOR AND CABLE INSTALLATION
- Check the adjustable pedal motor and cable for correct installation.
- Are the motor and cable correctly installed?
Yes
GO to B5.
No
CORRECT the adjustable pedal motor installation. TEST the system for normal operation.
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B5 INSPECT FOR FOREIGN MATERIAL
- Inspect the adjustable brake pedal and accelerator assemblies for foreign material causing a binding condition.
- Are the pedal assemblies free from foreign material?
Yes
GO to B6.
No
REMOVE the foreign material. TEST the system for normal operation.
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B6 CHECK THE DSM PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR AN OPEN
- Disconnect: Adjustable Pedal Motor C2159.
- Disconnect: DSM C341C.
- Measure the resistance between DSM C341C, harness side and adjustable pedal motor C2159, harness side as indicated in the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to B7.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
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B7 CHECK THE DSM PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR A SHORT TO GROUND
- Measure the resistance between ground and:
- DSM C341C-3, circuit LPP06 (YE/BU), harness side.
- DSM C341C-12, circuit CPP01 (WH/OG), harness side.
- DSM C341C-15, circuit RPP06 (GN), harness side.
- DSM C341C-24, circuit CPP02 (BN), harness side.
- Are the resistances greater than 10,000 ohms?
Yes
GO to B8.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
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B8 CHECK THE DSM PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR A SHORT TOGETHER
- Measure the resistance between DSM C341C pins, harness side as indicated in the following chart:
- Are the resistances greater than 10,000 ohms?
Yes
GO to B9.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
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B9 CHECK THE DSM PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between ground and:
- DSM C341C-3, circuit LPP06 (YE/BU), harness side.
- DSM C341C-12, circuit CPP01 (WH/OG), harness side.
- DSM C341C-15, circuit RPP06 (GN), harness side.
- DSM C341C-24, circuit CPP02 (BN), harness side.
- Is any voltage present?
Yes
REPAIR the affected circuit(s). TEST the system for normal operation.
No
INSTALL a new brake pedal and bracket. REFER to Brake Pedal and Bracket Service and Repair. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
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