DTC P0346:00 [MZI-3.7]

id0102d2313500

DTC P0346:00 | CMP sensor (LH) circuit-range/performance
--- | ---
DETECTION CONDITION | • The PCM monitors the CMP sensor (LH) for a noisy signal.
POSSIBLE CAUSE | • Radio frequency interference/electromagnetic interference (RFI/EMI) • Camshaft phaser and sprocket malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | CLEAR AND ATTEMPT TO RETRIEVE DTC Note • If DTC P0346:00 is present, ignition, alternator noise, radio frequency interference (RFI) and CKP concerns should be considered. • For vehicles with the variable valve timing control system, concerns with the engine oil level, oil filter, oil contamination, or the variable valve timing system may cause camshaft positioning errors. • Turn the ignition switch to the ON position (engine off). • Clear the DTC from the PCM memory using the M-MDS. • Start the engine. • Increase engine speed to greater than 1,500 rpm for 10 s. Repeat this 3 times. • Retrieve DTCs using the M-MDS. • Is the same DTC present? | Yes | Go to the next step.
No | Perform the “INTERMITTENT CONCERN TROUBLESHOOTING”. Then go to Step 9.
4 | INSPECT GENERATOR FOR EXCESSIVE ELECTRICAL NOISE Note • If the generator is electrically noisy, the noise decreases when the generator terminal B is disconnected. • Start the engine. • Monitor the generator for an audible electric noise. • Turn the ignition switch off. • Disconnect the generator terminal B. • Start the engine. • With the engine running, determine if the generator is still noisy. • Does the noise remain constant when generator terminal B is disconnected? | Yes | Go to the next step.
No | Perform the “INTERMITTENT CONCERN TROUBLESHOOTING”. (Generator is noisy symptom.) Then go to Step 9.
5 | INSPECT FOR DTC • Retrieve DTCs using the M-MDS. • Is the same DTC present? | Yes | Go to the next step.
No | Go to Step 9. (Unable to duplicate or identify the concern at this time.)
6 | INSPECT WIRING HARNESS • Turn the ignition switch off. • Inspect the wiring harness for routing, alterations, incorrect shielding, or electrical interference from other systems. • Inspect the CMP sensor (LH) connector for damage or corrosion. • Are there any malfunction? | Yes | Repair as necessary. Then go to Step 9.
No | Go to the next step.
7 | INSPECT THE VARIABLE VALVE TIMING CONTROL SYSTEM • Perform the Variable Valve Timing Control System Operation Inspection for the left bank. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZI-3.7].) • Are there any malfunction? | Yes | Repair as necessary. Then go to Step 9.
No | Go to the next step.
8 | INSPECT FOR CORRECT PCM OPERATION • Disconnect all the PCM connectors. • Visually inspect for: ― Pushed out pins ― Corrosion • Connect all the PCM connectors and verify that they seat correctly. • Retrieve DTCs using the M-MDS. • Is the same DTC present? | Yes | Go to the next step.
No | Go to the next step. (The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.)
9 | VERIFY TROUBLESHOOTING OF DTC P0346:00 HAS BEEN COMPLETED • Verify that all disconnected connectors are reconnected. • Clear the DTC from the PCM memory using the M-MDS. • Retrieve DTCs using the M-MDS. • Is the same DTC present? | Yes | Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) Go to the next step.
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZI-3.7].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7].)
No | Troubleshooting completed.