Pinpoint Test C: Adj Brake Pedal Is Inop/Does Not Operate Correctly - Using the Mem SET Sw Buttons or the Remote Keyless Entry
Pinpoint Tests
Pinpoint Tests
Pinpoint Test C: Adjustable Brake Pedal is Inoperative/Does Not Operate Correctly - Using the Memory SET Switch Buttons or 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 SET switch buttons or the remote transmitter, the Driver Seat Module (DSM) will send voltage to the adjustable pedal motor along circuit CPP01 (WH/OG) to move the pedals forward and along circuit CPP02 (BN) to move the pedals rearward. When voltage is sent to the motor along circuit CPP01 (WH/OG) it returns to the DSM (Driver Seat Module) along CPP02 (BN). Likewise, when the voltage is sent to the motor along circuit CPP02 (BN) it returns to the DSM (Driver Seat Module) along CPP01 (WH/OG).
The DSM (Driver Seat Module) uses a Hall-effect switch attached to the pedal motor to identify the current pedal position. The DSM (Driver Seat Module) sends a reference voltage along circuit LPP06 (YE/BU), through the Hall-effect switch and back to the DSM (Driver Seat Module) along the signal return circuit, RPP06 (GN).
The DSM (Driver Seat Module) 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 (Driver Seat Module)
PINPOINT TEST C : ADJUSTABLE BRAKE PEDAL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - USING THE MEMORY SET SWITCH BUTTONS OR THE Remote Keyless Entry (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.
C1 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 C2.
No
If the pedals do not move at all using the switch, GO to Pinpoint Test B. Pinpoint Test B: Adjustable Brake Pedal Is Inoperative/Does Not Operate Correctly - Using the Adjustable Pedal Sw. (W/Memory)
If the pedals only move in 1 second intervals regardless of button operation, GO to Pinpoint Test D. Pinpoint Test D: DTC B1987, B1991 or B2275
C2 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 C3.
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 C4.
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
C3 CHECK THE RKE (Remote Keyless Entry) TRANSMITTER OPERATION
- Set a memory position in the Remote Keyless Entry (RKE) transmitter for the driver seat, exterior mirrors and adjustable pedals. Refer to Remote Memory Activation in Doors, Hood and Trunk &/or Locks.
- Select PARK.
- Press the unlock button on the RKE (Remote Keyless Entry) 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 C4.
No
If all 3 items do not move, REFER to Diagnosis and Testing in Doors, Hood and Trunk &/or Locks to DIAGNOSE the RKE (Remote Keyless Entry) transmitter. Testing and Inspection
If only the adjustable pedals do not move, GO to C4.
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
C4 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 C5.
No
CORRECT the adjustable pedal motor installation. TEST the system for normal operation.
C5 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 C6.
No
REMOVE the foreign material. TEST the system for normal operation.
C6 CHECK THE DSM (Driver Seat Module) PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR AN OPEN
- Disconnect: Adjustable Pedal Motor C2003.
- Disconnect: DSM (Driver Seat Module) C341C.
- Measure the resistance between DSM (Driver Seat Module) 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 C7.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
C7 CHECK THE DSM (Driver Seat Module) PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR A SHORT TO GROUND
- Measure the resistance between ground and:
- DSM (Driver Seat Module) C341C-3, circuit LPP06 (YE/BU), harness side.
- DSM (Driver Seat Module) C341C-12, circuit CPP01 (WH/OG), harness side.
- DSM (Driver Seat Module) C341C-15, circuit RPP06 (GN), harness side.
- DSM (Driver Seat Module) C341C-24, circuit CPP02 (BN), harness side.
Are the resistances greater than 10,000 ohms?
Yes
GO to C8.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
C8 CHECK THE DSM (Driver Seat Module) PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR A SHORT TOGETHER
- Measure the resistance between DSM (Driver Seat Module) C341C pins, harness side as indicated in the following chart:
fm12_cf1-206064267q011_006
Are the resistances greater than 10,000 ohms?
Yes
GO to C9.
No
REPAIR the affected circuit(s). TEST the system for normal operation.
C9 CHECK THE DSM (Driver Seat Module) PEDAL MOTOR AND HALL-EFFECT CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between ground and:
- DSM (Driver Seat Module) C341C-3, circuit LPP06 (YE/BU), harness side.
- DSM (Driver Seat Module) C341C-12, circuit CPP01 (WH/OG), harness side.
- DSM (Driver Seat Module) C341C-15, circuit RPP06 (GN), harness side.
- DSM (Driver Seat Module) 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 adjustable brake pedal assembly. REFER to Brake Pedal and Bracket . TEST the system for normal operation.