Diagnostic Procedure

DTC P050A:00 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2) Perform the Freeze Frame PID Data Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.5] .) Is the DTC P050A:00 on FREEZE FRAME DATA (Mode 2)?	Yes	Go to the next step.
1		No	Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2). (See DTC TABLE [MZR 2.5] .)
2	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (cold start emission reduction strategy monitoring related) been recorded?	Yes	Go to the next step.
2		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
3	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.
3		No	Go to the next step.
4	INSPECT INTAKE AIR SYSTEM FOR AIR SUCTION Start the engine. Inspect for air leakage between MAF sensor and intake manifold. NOTE: Engine speed may change when rust penetrating agent is sprayed on the air suction area. Is there any leakage?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 7.
4		No	Go to the next step.
5	INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Drive-by-wire Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR 2.5] .) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 7.
5		No	Go to the next step.
6	INSPECT THROTTLE VALVE Switch the ignition to off. Remove the throttle valve with connector connected. Access the ETC_DSD PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.5] .) Move the throttle valve using the ETC_DSD PID of simulation function. Does the throttle valve move smoothly?	Yes	Go to the next step.
6		No	Clean or replace the throttle valve and retest, then go to the next step. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.5] .)
7	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 2.5] .) Start the engine and warm it up completely. Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.5] .) Is the PENDING CODE for this DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 2.5] .) Go to the next step.
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [MZR 2.5] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 2.5] .)
8		No	DTC troubleshooting completed.