Monitor Conditions
- When Monitored: Continuously while the system is active.
Set Conditions
- Set Condition: Implausible data has been received over the bus from the Transmission Control Module (TCM).
Possible Causes
| Possible Causes |
|---|
| INTERMITTENT DTC |
| CAN BUS OPEN OR SHORTED CONDITION |
| TRANSMISSION CONTROL MODULE (TCM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: Continuously while the system is active.
- Set Condition: Implausible data has been received over the bus from the Anti-lock Brake Module.
| Possible Causes |
|---|
| CAN BUS OPEN OR SHORTED CONDITION |
| ANTI-LOCK BRAKE MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- When Monitored: Continuously while the system is active.
- Set Condition: Implausible data has been received over the bus from the Electronic Stability Program (ESP) in the ABS Module.
| Possible Causes |
|---|
| CAN BUS OPEN OR SHORTED CONDITION |
| ELECTRONIC STABILITY PROGRAM (ESP)/ANTILOCK BRAKE MODULE (ABS) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- When Monitored: Ignition on.
- Set Condition: When the PCM does not receive a fuel level signal over the CAN C circuit. The circuit is constantly monitored.
| Possible Causes |
|---|
| CAN C BUS CIRCUIT OPEN OR SHORTED |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: Ignition on.
- Set Condition: The PCM doesn't receive the ambient temperature signal over the CAN C bus from the TIPM. The circuit is continuously monitored.
| Possible Causes |
|---|
| CAN C BUS CIRCUIT OPEN OR SHORTED |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: Ignition on.
- Set Condition: The PCM doesn't receive a vehicle speed signal from the Anti-Lock Brake Module over the CAN C bus.
| Possible Causes |
|---|
| CAN C BUS CIRCUIT OPEN OR SHORTED |
| ANTI-LOCK BRAKE (ABS) MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: Ignition on.
- Set Condition: The Powertrain Control Module (PCM) doesn't receive the A/C Pressure signal over the CAN C bus from the Totally Integrated Power Module (TIPM). The circuit is continuously monitored.
| Possible Causes |
|---|
| CAN C BUS CIRCUIT OPEN OR SHORTED |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- When Monitored: Ignition on.
- Set Condition: The PCM doesn't receive a vehicle speed signal from the Anti-lock brake Module over the CAN C bus.
| Possible Causes |
|---|
| CAN C BUS CIRCUIT OPEN OR SHORTED |
| ANTI-LOCK BRAKE (ABS) MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: With the ignition on, battery voltage between 9 and 16 volts, and engine run time greater than 3 seconds.
- Set Condition: The PCM either doesn't receive a bus message or receives an implausible bus message from the Totally Integrated Power Module (TIPM).
| Possible Causes |
|---|
| CAN C BUS OPEN OR SHORTED CONDITION |
| (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE |
| (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND |
| (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO THE (P37) SWITCH RETURN CIRCUIT |
| EXCESSIVE RESISTANCE IN THE (N4) FUEL LEVEL SIGNAL 1 CIRCUIT |
| EXCESSIVE RESISTANCE IN THE (P37) SWITCH RETURN CIRCUIT |
| FUEL LEVEL SENSOR 1 |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
Scheme 933
Scheme 934
Scheme 935
Scheme 936
Scheme 937
- ACTIVE DTC NOTE: Diagnose all CAN B and C communication DTCs before continuing. NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem. Ignition on, engine not running. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to step 2 No Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000) Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000)
- CAN B BUS COMMUNICATION DTCS ALSO ACTIVE With a scan tool select View DTCs in the TIPM. Are any CAN B Bus DTCs active? Yes Refer to «DIAGNOSTIC CODE INDEX - TIPM»(ref-353626) and perform the appropriate diagnostic procedure. Perform BODY VERIFICATION TEST - VER 1. No Go to step 3
- FUEL LEVEL SENSOR Turn the ignition off. Disconnect the Fuel Pump Module 1 harness connector. Ignition on, engine not running. Using a fused jumper wire, jump the (P37) Switch Return circuit to the (N4) Fuel Level Sensor Signal 1 circuit in the Fuel Pump Module 1 harness connector. Did the Fuel gauge level change from empty to full? Yes Replace the Fuel Level Sensor. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000) No Go to step 4
- (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C7 TIPM harness connector. Measure the resistance between ground and the (N4) Fuel Level Signal 1 circuit in the Fuel Pump Module 1 harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (N4) Fuel Level Signal 1 circuit. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000) No Go to step 5
- (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO THE (P37) SWITCH RETURN CIRCUIT Measure the resistance between the (N4) Fuel Level Signal 1 circuit and the (P37) Switch Return circuit from the Fuel Pump Module 1 harness connector. Is the resistance below 5.0 ohms? Yes Repair the short between the (P37) Switch Return circuit and the (N4) Fuel Level Signal 1 circuit. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000) No Go to step 6
- EXCESSIVE RESISTANCE IN THE (N4) FUEL LEVEL SIGNAL CIRCUIT Measure the resistance of the (N4) Fuel Level Signal 1 circuit from the Fuel Pump Module harness connector to the C7 TIPM harness connector. Is the resistance below 5.0 ohms? Yes Go to step 7 No Repair the excessive resistance in the (N4) Fuel Level Signal circuit. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000)
- EXCESSIVE RESISTANCE IN THE (P37) SWITCH RETURN CIRCUIT Measure the resistance of the (P37) Switch Return circuit from the Fuel Pump Module harness connector to the C7 TIPM harness connector. Is the resistance below 5.0 ohms? Yes Go to step 8 No Repair the excessive resistance in the (P37) Switch Return circuit. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000)
- POWERTRAIN CONTROL MODULE (PCM) Using the «SYSTEM WIRING DIAGRAMS»(ref-313026) as a guide, inspect the wiring and connector at the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Powertrain Control Module connectors. Refer to any Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000) No Replace and program the Powertrain Control Module per Service Information. Perform the PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353651-S22414240032010011200000)
- When Monitored: Ignition on.
- Set Condition: The PCM gets an implausible signal over the CAN C circuit from the ABS Module. The circuit is continuously monitored.
| Possible Causes |
|---|
| CAN C BUS CIRCUIT SHORTED |
| CAN C BUS CIRCUIT OPEN |
| ANTI-LOCK BRAKE (ABS) MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: Ignition on.
- Set Condition: The PCM gets an implausible signal over the CAN C circuit from the ABS Module. The circuit is continuously monitored.
| Possible Causes |
|---|
| VEHICLE SPEED SENSOR DTC ACTIVE IN ANTI-LOCK BRAKE MODULE |
| CAN C BUS CIRCUIT SHORTED |
| CAN C BUS CIRCUIT OPEN |
| ANTI-LOCK BRAKE (ABS) MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- When Monitored: Ignition on.
- Set Condition: The PCM gets an implausible signal over the CAN C circuit from the ABS Module. The circuit is continuously monitored.
| Possible Causes |
|---|
| VEHICLE SPEED SENSOR DTC ACTIVE IN ANTI-LOCK BRAKE MODULE |
| CAN C BUS CIRCUIT SHORTED |
| CAN C BUS CIRCUIT OPEN |
| ANTI-LOCK BRAKE (ABS) MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure