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Inspection and Verification: Notes

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

    Mechanical Electrical
    • Engine oil level
    • Fuel tank and lines
    • Engine coolant level
    • Washer fluid level
    • Brake fluid level
    • Smart junction box (SJB) fuse(s):
      • 7 (7.5A)
      • 20 (7.5A)
      • 23 (7.5A)
    • Bulb(s)
    • Circuitry
    • Instrument cluster
  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 article, 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 article 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 article.
    • If the network test passes, retrieve and record the continuous memory DTCs.
  8. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB.
  9. If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index, the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index, or the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  10. If no DTCs related to the concern are retrieved, go to Symptom Chart .
INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Action
B1202 Fuel Sender Circuit Open (sender with fuel pump module) Go to Pinpoint Test B .
B1204 Fuel Sender Circuit Short To Ground (sender with fuel pump module) Go to Pinpoint Test B .
B1205 Instrument Cluster Switch Number 1 Assembly Circuit Failure REFER to INFORMATION AND MESSAGE CENTER article.
B1342 ECU is Defective CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to Instrument Cluster (IC) . TEST the system for normal operation.
B1868 Lamp Air Bag Warning Indicator Circuit Failure CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to Instrument Cluster (IC) . TEST the system for normal operation.
B1870 Lamp Air Bag Warning Indicator Circuit Short to Battery CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to Instrument Cluster (IC) . TEST the system for normal operation.
B2143 NVM Memory Failure CLEAR the DTCs. REPEAT the self-test. If DTC B2143 is retrieved again, INSTALL a new instrument cluster. REFER to Instrument Cluster (IC) . TEST the system for normal operation.
B2477 Module Configuration Error REFER to MODULE CONFIGURATION article.
B2627 Fuel Sender Circuit Open #2 (secondary fuel sender) Go to Pinpoint Test B .
B2628 Fuel Sender Circuit Short To Ground #2 (secondary fuel sender) Go to Pinpoint Test B .
B2675 Trip Reset Button Stuck VERIFY that the instrument cluster bezel is aligned correctly and the SELECT/RESET button is not binding. REPAIR as necessary. If the switch is not binding, INSTALL a new instrument cluster. REFER to Instrument Cluster (IC) . TEST the system for normal operation.
B2879 Fuel Tank Jet Pump Fault Go to Pinpoint Test B .
U2023 Fault Received From External Node Go to Pinpoint Test A .
All other DTCs - REFER to MULTIFUNCTION ELECTRONIC MODULES article.
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Action
B1482 Wiper Washer Fluid Level Sensor Circuit Short to Ground Go to Pinpoint Test V .
B2479 Brake Park Switch Circuit Short to Ground Go to Pinpoint Test J .
B2678 Low Coolant Sender Failure Go to Pinpoint Test W .
C1125 Brake Fluid Level Sensor Input Circuit Failure Go to Pinpoint Test J .
C1284 Oil Pressure Switch Failure Go to Pinpoint Test D .
All other DTCs - REFER to MULTIFUNCTION ELECTRONIC MODULES article.
POWERTRAIN CONTROL MODULE (PCM) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Action
P0457 Fuel Fill Cap Off REFER to the Introduction - Gasoline Engines article.
P0460 Fuel Level Sensor A Circuit REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test B .
P0461 Fuel Level Sensor A Circuit Range/Performance REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test B .
P0462 Fuel Level Sensor A Circuit Low REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test B .
P0463 Fuel Level Sensor A Circuit High REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test B .
P2065 Fuel Level Sensor B Circuit REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test C .
P2066 Fuel Level Sensor B Circuit Range/Performance REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test C .
P2067 Fuel Level Sensor B Circuit Low REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test C .
P2068 Fuel Level Sensor B Circuit High REFER to the Introduction - Gasoline Engines article first.
If sent here from an ENGINE PERFORMANCE article, go to Pinpoint Test C .
All other DTCs - REFER to the Introduction - Gasoline Engines article.
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