Diagnostic Procedure

DTC DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT CMP SENSOR CONNECTOR CONDITION Switch the ignition to off. Disconnect the CMP sensor connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 13.
3		No	Go to the next step.
4	INSPECT CMP SENSOR CIRCUIT FOR SHORT TO GROUND CMP sensor connector is disconnected. Inspect for continuity between the following terminals (wiring harness-side) and body ground: CMP sensor terminal A CMP sensor terminal B Is there continuity?	Yes	If the short to ground circuit could be detected: Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: Replace the PCM (short to ground in the PCM internal circuit). (See PCM REMOVAL/INSTALLATION [MZR 1.5] ). Go to Step 13.
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR CONDITION Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 13.
5		No	Go to the next step.
6	INSPECT CMP SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY CMP sensor and PCM connectors are disconnected. Switch the ignition to ON (engine off). Measure the voltage at the CMP sensor terminal B (wiring harness-side). Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 13.
6		No	Go to the next step.
7	INSPECT CMP SENSOR CIRCUITS FOR SHORT TO EACH OTHER CMP sensor and PCM connectors are disconnected. Switch the ignition to off. Inspect for continuity between CMP sensor terminals A, B and C (wiring harness-side). Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to each other, then go to Step 13.
7		No	Go to the next step.
8	INSPECT CMP SENSOR CIRCUIT FOR OPEN CIRCUIT CMP sensor and PCM connectors are disconnected. Inspect for continuity between the following terminals (wiring harness-side): CMP sensor terminal A-PCM terminal 2I CMP sensor terminal B-PCM terminal 2N CMP sensor terminal C-PCM terminal 2M Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 13.
9	INSPECT CMP SENSOR Inspect the CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZR 1.5] ). Is there any malfunction?	Yes	Replace the CMP sensor, then go to Step 13. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZR 1.5] ).
9		No	Go to the next step.
10	VERIFY VALVE TIMING MECHANISM INSTALLATION Verify the valve timing mechanism installation for the following parts: Timing chain Camshaft sprocket lock bolt Crankshaft pulley lock bolt Is there any malfunction?	Yes	Reinstall the misinstallation or loose parts correctly, then go to Step 13. (See TIMING CHAIN REMOVAL/INSTALLATION [MZR 1.5] ). (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [MZR 1.5] ).
10		No	Go to the next step.
11	INSPECT STOPPER PIN MECHANISM Remove the timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION [MZR 1.5] ). Inspect the stopper pin mechanism. (See VARIABLE VALVE TIMING ACTUATOR INSPECTION [MZR 1.5] ). Is there any malfunction?	Yes	Replace the variable valve timing actuator, then go to Step 13. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [MZR 1.5] ).
11		No	Go to the next step.
12	INSPECT ROTOR POSITION Remove the variable valve timing actuator. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [MZR 1.5] ). Is the rotor at the maximum valve timing advanced position?	Yes	Replace the variable valve timing actuator, then go to the next step. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [MZR 1.5] ).
12		No	Variable valve timing mechanism is normal. NOTE: This DTC is detected as an intermittent concern. The intermittent concern might be removed using the cleaning mode of the variable valve timing control function. Go to the next step.
13	VERIFY DTC TROUBLESHOOTING COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZR 1.5] ). Start the engine. Access the MAF PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR 1.5] ). Run the engine when the MAF PID value is more than 1.43 g/s {0.189 lb/min}. Perform the KOER self test. (See KOEO/KOER SELF TEST [MZR 1.5] ). Is the same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.5] ). Go to the next step.
13		No	Go to the next step.
14	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [MZR 1.5] ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 1.5] ).
14		No	DTC troubleshooting completed.