Monitor Conditions
- When Monitored: With the ignition on, battery voltage between 9 and 16 volts, and engine run time greater than 3 seconds.
Set Conditions
- Set Condition: The PCM doesn't receive a bus message from the Front Control Module (FCM) for a specific amount of time.
Possible Causes
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO TOTALLY INTEGRATED POWER MODULE (TIPM) - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- When Monitored: With the ignition on. Battery voltage between 10 and 16 volts. Ignition Off Draw (IOD) fused installed. Totally Integrated Power Module (TIPM) is configured correctly.
- Set Condition: Bus messages not received from the Vehicle Security Control Module (also known as the Wireless Ignition Node or WIN) for approximately two to five seconds.
| Possible Causes |
| (D51) OR (D65) CAN C BUS(+) CIRCUIT SHORTED TO VOLTAGE |
| (D52) OR (D64) CAN C BUS(-) CIRCUIT SHORTED TO GROUND |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| TIPM NOT CONFIGURED CORRECTLY |
| WIN POWER AND GROUND |
| WIRELESS IGNITION NODE (WIN) |
| MODULE THAT SET THIS DTC |
- When Monitored: With the ignition on, battery voltage between 9 and 16 Volts, and engine run time greater than 3 seconds.
- Set Condition: The Powertrain Control Module (PCM) doesn't receive a bus message from the Steering Angle Sensor (SAS) for a specific amount of time.
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO STEERING ANGLE SENSOR (SAS) - CLOCKSPRING UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
- 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 |
| NO POWER TO TOTALLY INTEGRATED POWER MODULE (TIPM) - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 |
| NO POWER TO TOTALLY INTEGRATED POWER MODULE (TIPM) - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 |
| NO POWER TO TOTALLY INTEGRATED POWER MODULE (TIPM) - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 Anti-Lock Brake Module.
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO ANTI-LOCK BRAKE MODULE - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 |
| NO POWER TO TOTALLY INTEGRATED POWER MODULE (TIPM) - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 Anti-Lock Brake Module.
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO ANTI-LOCK BRAKE MODULE - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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) |
Refer to DIAGNOSTIC CODE INDEX - NGC G for diagnostic procedures and for further possible causes.
Scheme 1387
Scheme 1387: Diagnostic Test
Scheme 1388
Scheme 1389
Scheme 1390
Scheme 1391
- ACTIVE DTC Ignition on, engine not running. With a scan tool, select View DTCs. Is the DTC Active at this time? 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-353664-S27245307032010011200000)
- CAN C BUS DTCS ALSO ACTIVE With a scan tool check for DTCs in the TIPM. Are any CAN C related DTCs Active at this time? Yes Refer to «DIAGNOSTIC CODE INDEX - NGC»(ref-353673) for the appropriate diagnostic procedures. Perform PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000) 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 PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000) 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 PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000) 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 PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000) 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 PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000)
- 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 PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000)
- POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic 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 PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000) No Replace and program the Powertrain Control Module per Service Information. Perform PCM Verification Test. See «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure»(ref-353664-S27245307032010011200000)
- 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) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 Anti-Lock Brake Module.
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO ANTI-LOCK BRAKE MODULE - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 Anti-Lock Brake Module.
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO ANTI-LOCK BRAKE MODULE - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.
- 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 Anti-Lock Brake Module.
| Possible Causes |
| CAN C BUS OPEN OR SHORTED CONDITION |
| NO POWER TO ANTI-LOCK BRAKE MODULE - MODULE UNPLUGGED OR OPEN FUSE |
| POWERTRAIN CONTROL MODULE (PCM) |
Refer to DIAGNOSTIC CODE INDEX - NGC for diagnostic procedures and for further possible causes.