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Adjustable Pedals With Memory Feature

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Adjustable pedals
    • Brake pedal linkage
    • Foreign material
    • Smart junction box (SJB) fuse 1 (20A)
    • Battery junction box (BJB) fuses:
      • 1 (50A)
      • 14 (30A)
    • Circuitry
    • Adjustable pedal switch
    • Parking brake switch
    • Electrical connector(s)
    • Driver seat module
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    4. NOTE: Make sure to use the latest scan tool software release.
  4. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
    5. NOTE: The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.
  5. If the scan tool does not communicate with the VCM:
    • check the VCM connection to the vehicle.
    • check the scan tool connection to the VCM.
    • refer to MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no communication with the scan tool.
  6. If the scan tool does not communicate with the vehicle:
    • verify the ignition key is in the ON position.
    • verify the scan tool operation with a known good vehicle.
    • refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the powertrain control module (PCM).
  7. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .
    • If the network test passes, retrieve and record continuous memory diagnostic trouble codes (DTCs).
  8. Clear the continuous DTCs and carry out the self-test diagnostics for the anti-lock brake system (ABS) module.
  9. If the DTCs retrieved are related to the concern, go to Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Chart. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES .
  10. If no DTCs related to the concern are retrieved, go to Symptom Chart .
DRIVER SEAT MODULE (DSM) DIAGNOSTIC TROUBLE CODE (DTC) CHART

DTC Description Source Action
B1317 Battery Voltage High Continuous REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1318 Battery Voltage Low Continuous REFER to CHARGING SYSTEM - GENERAL INFORMATION .
B1342 ECU Is Defective DSM REFER to MULTIFUNCTION ELECTRONIC MODULES .
B1530 Memory Set Switch Circuit Short to Ground On-Demand and Continuous REFER to SEATING .
B1534 Memory 1 Switch Circuit Short to Ground On-Demand and Continuous REFER to SEATING .
B1538 Memory 2 Switch Circuit Short to Ground On-Demand and Continuous REFER to SEATING .
B1987 Pedal Forward/Rearward Motor Stalled DSM Go to Pinpoint Test B .
B1988 Pedal Position Forward Switch Circuit Short to Battery DSM Go to Pinpoint Test B .
B1989 Pedal Position Rearward Switch Circuit Short to Battery DSM Go to Pinpoint Test B .
B2084 Memory SET switch Indicator Short to Ground DSM Go to Pinpoint Test C .
B2143 Non Volatile Memory Failure (EEPROM) Continuous CONFIGURE the DSM. REFER to MODULE CONFIGURATION . CLEAR the DTCs. REPEAT the self-test. If the DTC resets, INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . CONFIGURE the DSM.
B2477 Module Configuration Failure Continuous INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . CONFIGURE the DSM. REFER to MODULE CONFIGURATION .
B2971 Pedal Position Input Short to Ground DSM Go to Pinpoint Test B .
B2972 Pedal Position Input Short to Battery DSM Go to Pinpoint Test B .
U1900 CAN Communication Bus Fault - Receive Error On-Demand and Continuous
NOTE: Do not install a new DSM as part of repair for a DSM DTC U1900 fault. The DSM is not the source of the fault when DTC U1900 is present.
If DTC U1900 is present on-demand, CHECK the instrument cluster module for DTCs and REPAIR as needed. REFER to INSTRUMENT CLUSTER .If DTC U1900 is present continuous only, CHECK for an intermittent MS-CAN fault. REFER to MODULE COMMUNICATIONS NETWORK to diagnose the MS-CAN network concern.
U2050 No Application Code Present On-Demand and Continuous CONFIGURE the DSM. REFER to MODULE CONFIGURATION . CLEAR the DTC. REPEAT the self-test. If the DTC does not clear or is retrieved again, INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . CONFIGURE the DSM.
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