P0354
P0354-IGNITION COIL 4 CIRCUIT
For a complete wiring diagram refer to the Wiring Information Electrical Diagrams
- When Monitored:
With the engine running and battery voltage greater than 10.4 volts.
- Set Condition:
The PCM detects that the actual state of Ignition Coil 4 does not match the intended state.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Pre-Diagnostic Troubleshooting Procedure
1. DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, Clear DTCs in the Powertrain Control Module (PCM).
3. Start the engine and allow it to reach normal operating temperature.
WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
4. With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Go to 2
No
- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.Checking for an Intermittent DTC
2. (K344) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the Ignition Coil 4 connector.
3. Turn the ignition on.
4. Using a 12 volt test light connected to ground, check the (K344) Fused Main Relay Output circuit in the Ignition Coil 4 harness connector.
NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
Is the test light illuminated and bright?
Yes
- Go to 3
No
- Repair the (K344) Fused Main Relay Output circuit for an open circuit or high resistance.
- Perform the PCM Verification TestPCM Verification Test.
3. (K15) COIL 4 CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the Powertrain Control Module (PCM) connector.
3. Measure the resistance of the (K15) Coil 4 Control circuit between the Ignition Coil 4 harness connector and the Powertrain Control Module (PCM) harness connector.
Is the resistance below 5.0 ohms?
Yes
- Go to 4
No
- Repair the (K15) Coil 4 Control circuit for an open circuit or high resistance.
- Perform the PCM Verification TestPCM Verification Test.
4. IGNITION COIL 4
WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
1. Connect the Powertrain Control Module (PCM) connector.
2. Using a 12 volt test light connected to 12 volts, check the (K15) Coil 4 Control circuit in the Ignition Coil 4 harness connector.
3. Crank the engine for 5 seconds.
NOTE: The test light should blink each time the circuit is activated by the PCM.
Does the test light blink each time the circuit is activated by the PCM?
Yes
- Replace the Ignition Coil 4.
- Perform the PCM Verification TestPCM Verification Test.
No
- Go to 5
5. POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Ignition Coil 4 and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Search for any Technical Service Bulletins that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform the PCM Verification TestPCM Verification Test.
No
- Replace and program the Powertrain Control Module (PCM).
- Perform the PCM Verification TestPCM Verification Test.