Circuit Description
The powertrain control module (PCM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor information to monitor the correlation between the crankshaft and camshaft positions. If the deviation between the crankshaft and camshaft position exceeds a calibrated amount DTC P1345 will set.
Conditions for Running the DTC
| • | The engine is running. |
| • | The engine has been running for more than 16 seconds. |
| • | The minimum voltage is 11 volts. |
| • | The variable camphaser is commanded to zero. |
Conditions for Setting the DTC
The deviation between the crankshaft and the camshaft positions exceeds a calibrated amount.
Action Taken When the DTC Sets
| • | The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails. |
| • | The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. |
| • | A current DTC, Last Test Failed, clears when the diagnostic runs and passes. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. |
| • | Clear the MIL and the DTC with a scan tool. |
Diagnostic Aids
Important: Scan tool control of the CMP actuator solenoid is inhibited when DTC P1345 sets.
The following conditions may cause this DTC to set:
| • | An improperly torqued harmonic balancer |
| • | A misbuilt or mis-timed engine |
| • | A loose or missing crank damper bolt |
| • | The camphaser solenoid stuck open |
| • | The camphaser stuck in a position other than 0 degrees |
| • | The camphaser does not return to 0 degrees within 16 seconds |
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check-Engine Controls? | -- | Go to Step 2 | |
Did the DTC fail this ignition? | -- | Go to Step 3 | Go to Diagnostic Aids | |
3 |
Did you find and correct the condition? | Go to Step 8 | Go to Step 4 | |
4 |
Does the pintle inside the CMP actuator solenoid move? | Go to Step 5 | Go to Step 7 | |
5 | Inspect the CMP actuator for binding or being stuck. Refer to Camshaft Position Actuator Diagnosis in Engine Mechanical. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 6 |
6 | Inspect the engine for correct valve timing. Refer to Camshaft Timing Chain, Sprocket, and Tensioner Replacement in Engine Mechanical. Did you find and correct the condition? | -- | Go to Step 8 | Go to Diagnostic Aids |
7 | Replace the camshaft position actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Replacement . Did you complete the replacement? | -- | Go to Step 8 | -- |
8 |
Did the DTC fail this ignition? | -- | Go to Step 2 | Go to Step 9 |
9 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | -- | System OK |
