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Pinpoint Test

  1. CHECK FOR Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTCs)
    1. Ignition ON.
    2. Using a scan tool, perform the Powertrain Control Module (PCM) Key ON Engine OFF (KOEO) self-test.
      • Are any Diagnostic Trouble Codes (DTCs) recorded? 
      1. Yes:  REFER to DTC CHART: POWERTRAIN CONTROL MODULE (PCM) .
      2. No:  GO to 2  on page 2.
  2. CHECK FOR Steering Column Control Module (SCCM) Diagnostic Trouble Codes (DTCs)
    1. Using a scan tool, perform the Steering Column Control Module (SCCM) self-test.
      • Are any Diagnostic Trouble Codes (DTCs) recorded? 
      1. Yes:  REFER to DTC CHART: STEERING COLUMN CONTROL MODULE (SCCM) .
      2. No:  GO to 3  on page 2.
  3. CHECK THE Cruise-Control Module (C-CM) Diagnostic Trouble Codes (DTCs)
    1. Using a scan tool, perform the Cruise-Control Module (C-CM) self-test.
      • Are any Diagnostic Trouble Codes (DTCs) recorded? 
      1. Yes:  REFER to DTC CHART: CRUISE CONTROL MODULE (C-CM) .
      2. No:  GO to 4  on page 2.
  4. CHECK FOR LOST COMMUNICATION Diagnostic Trouble Codes (DTCs)
    1. Using a scan tool, clear continuous Diagnostic Trouble Codes (DTCs) from all modules.
    2. Ignition OFF.
    3. Ignition ON.
    4. Wait at least 10 seconds.
    5. Retrieve all continuous Diagnostic Trouble Codes (DTCs) from all modules.
      • Are any lost communication Diagnostic Trouble Codes (DTCs) set in the Cruise-Control Module (C-CM) module? 
      1. Yes:  REFER to DTC CHART: CRUISE CONTROL MODULE (C-CM) .
      2. No:  GO to 5  on page 2.
  5. CHECK FOR Anti-Lock Brake System (ABS) MODULE Diagnostic Trouble Codes (DTCs)
    1. Using a scan tool, perform the Anti-Lock Brake System (ABS) module self-test.
      • Are any Diagnostic Trouble Codes (DTCs) recorded? 
      1. Yes:  REFER to DTC CHART: ANTI-LOCK BRAKE SYSTEM (ABS) MODULE .
      2. No:  GO to 6  on page 3.
  6. CHECK FOR Body Control Module (BCM) Diagnostic Trouble Codes (DTCs)
    1. Using a scan tool, perform the Body Control Module (BCM) module self-test.
      • Are any Diagnostic Trouble Codes (DTCs) recorded? 
      1. Yes:  REFER to DTC CHART: BODY CONTROL MODULE (BCM) .
      2. No:  GO to 7  on page 3.
  7. CHECK THE STOPLAMP SWITCH (BOO1) AND CRUISE CONTROL DEACTIVATOR SWITCH (BOO2) Parameter Identifications (PIDs)
    1. Using a scan tool, view Powertrain - Cruise Control Parameter Identifications (PIDs).
    2. Monitor the powertrain Parameter Identifications (PIDs) BOO1 (stoplamp switch) and BOO2 (cruise control deactivator switch) while applying and releasing the brake pedal.
      BRAKE PEDAL POSITION CHART

      Brake Pedal Position BOO1 Parameter Identification (PID) BOO2 Parameter Identification (PID)
      Released Off Off
      Applied lightly On Off
      Applied firmly On On
      • Do the Parameter Identification (PID) values agree with the brake pedal position? 
      1. Yes:  GO to 8  on page 3.
      2. No:  REFER to DIAGNOSTIC ROUTINE B .
  8. CHECK THE CRUISE CONTROL SWITCH
    1. Using a scan tool, view Powertrain - Cruise Control Parameter Identifications (PIDs).
    2. Press each cruise control switch while monitoring the cruise control switch Parameter Identification (PID) (SCCS).
      CRUISE CONTROL SWITCH REFERENCE CHART

      Cruise Control Switch SCCS Parameter Identification (PID) Value
      - None pressed
      RES/CNCL RESUME/CANCEL
      ON/OFF On/Off
      SET (pressed up) SET/+
      SET (pressed down) SET/-
      GAP (pressed up) GAPGAP
      (pressed down) GAP+
      • Does the Parameter Identification (PID) value agree with the switch position? 
      1. Yes:  GO to 9  on page 4.
      2. No:  If only one switch does not display the correct Parameter Identification (PID) value, INSTALL a new Left Hand (LH) steering wheel switch. REFER to STEERING WHEEL SWITCH .

        Otherwise, REFER to DIAGNOSTIC ROUTINE C .

  9. CHECK FOR CORRECT Powertrain Control Module (PCM) OPERATION
    1. Disconnect all the Powertrain Control Module (PCM) connectors.
    2. Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    3. Reconnect all the Powertrain Control Module (PCM) connectors. Make sure they seat and latch correctly.
    4. Operate the system and determine if the concern is still present.
      • Is the concern still present? 
      1. Yes:  CHECK On-Line Automotive Service Information System (OASIS) for any applicable Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, DISCONTINUE this test and FOLLOW Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Powertrain Control Module (PCM). REFER to POWERTRAIN CONTROL MODULE (PCM) .
      2. No:  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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