DTC P0349:00 [MZI-3.7]

id0102d2313600

DTC P0349:00

CMP sensor (LH) circuit intermittent

DETECTION CONDITION

•  The test fails when the PCM detects an intermittent signal from the CMP sensor (LH).

POSSIBLE CAUSE

•  Connector or terminal malfunction

•  Short to power supply between CMP sensor (LH) terminal A and PCM terminal 2T

•  Short to ground circuit between CMP sensor (LH) terminal A and PCM terminal 2T

•  Open circuit between CMP sensor (LH) terminal A and PCM terminal 2T

•  Open circuit between CMP sensor (LH) terminal B and PCM terminal 2Y

•  CMP sensor (LH) malfunction

•  Sensor shielding malfunction

DTC P0349:00	CMP sensor (LH) circuit intermittent
DETECTION CONDITION	• The test fails when the PCM detects an intermittent signal from the CMP sensor (LH).
POSSIBLE CAUSE	• Connector or terminal malfunction • Short to power supply between CMP sensor (LH) terminal A and PCM terminal 2T • Short to ground circuit between CMP sensor (LH) terminal A and PCM terminal 2T • Open circuit between CMP sensor (LH) terminal A and PCM terminal 2T • Open circuit between CMP sensor (LH) terminal B and PCM terminal 2Y • CMP sensor (LH) malfunction • Sensor shielding 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.
1		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.
2		No	Go to the next step.
3	CLEAR AND ATTEMPT TO RETRIEVE THE DTC Note • If DTCs P0340:00, P0344:00, P0345:00 or P0349:00 are present, ignition, alternator noise, radio frequency interference and CKP concerns should be considered. • Clear the DTC from the PCM memory using the M-MDS. • Turn the ignition switch to the ON position (Engine running). • Increase engine speed to more than 1,500 rpm for 10 s. Repeat this 3 times. • Retrieve the continuous memory DTCs. • The same DTC present?	Yes	Go to the next step.
3		No	Perform the “INTERMITTENT CONCERN TROUBLESHOOTING”. Then go to Step 11.
4	CHECK THE GENERATOR FOR EXCESSIVE ELECTRICAL NOISE Note • If the generator/regulator is electrically noisy, the noise decreases when the terminal B is disconnected. • Turn the ignition switch to the ON position (Engine running). • Monitor the generator for an audible electric noise. • Turn the ignition switch off. • Generator/regulator terminal B disconnected. • Turn the ignition switch to the ON position (Engine running). • With the engine running, determine if the generator is still noisy. • Does the noise remain constant when the terminal B is disconnected?	Yes	Go to the next step.
4		No	• Inspect the charging system, then go to Step 11. ― Drive belt damaged and misinstallation ― Generator pulley or generator misinstallation
5	INSPECT CMP SENSOR (LH) CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the CMP sensor (LH) connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Are there any malfunction?	Yes	Repair or replace suspected part, then go to Step 11.
5		No	Go to the next step.
6	INSPECT CMP SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • CMP sensor (LH) connector is disconnected. • Turn the ignition switch to the ON position (Engine off). • Measure voltage between CMP sensor (LH) terminal A (wiring harness-side) and body ground. • Is the voltage B+?	Yes	Repair or replace suspected part, then go to Step 11.
6		No	Go to the next step.
7	INSPECT CMP SENSOR (LH) SIGNAL CIRCUIT FOR SHORT TO GROUND • CMP sensor (LH) connector is disconnected. • Turn the ignition switch off. • Check continuity between CMP sensor (LH) terminal A (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or replace suspected part, then go to Step 11.
7		No	Go to the next step.
8	INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect PCM connector. • Check for poor connection (such as damaged, pulled-out pins, and corrosion). • Are there any malfunction?	Yes	Repair or replace suspected part, then go to Step 11.
8		No	Go to the next step.
9	INSPECT CMP SENSOR (LH) CIRCUIT FOR OPEN CIRCUIT • CMP sensor (LH) and PCM connectors are disconnected. • Turn the ignition switch off. • Check continuity between the following circuits: ― CMP sensor (LH) terminal A (wiring harness-side) and PCM terminal 2T (wiring harness-side) ― CMP sensor (LH) terminal B (wiring harness-side) and PCM terminal 2Y (wiring harness-side) • Is there continuity?	Yes	Go to the next step.
9		No	Repair or replace suspected part, then go to Step 11.
10	INSPECT CMP SENSOR (LH) • Inspect CMP sensor (LH). (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZI-3.7].) • Is there any malfunction?	Yes	Replace CMP sensor (LH), then go to the next step. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZI-3.7].)
10		No	Go to the next step.
11	VERIFY TROUBLESHOOTING OF DTC P0349:00 COMPLETED • Verify that all disconnected connectors reconnected. • Turn ignition switch to the ON position (Engine off). • Clear the DTC from the PCM memory using the M-MDS. • Start the engine. • Access the MAF PID using the M-MDS. • Is 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.
11		No	Go to the next step.
12	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].)
12		No	Troubleshooting completed.