Function Inspection Using M-MDS

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DIANOSTIC PROCEDURE - FUNCTION INSPECTION USING M-MDS

Step	Inspection	Results	Action
1	PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY Verify related Service Bulletins, on-line repair information, or Service Information availability. Is any related Information available?	Yes	Perform repair or diagnosis according to the available information. If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Record the freeze frame data/snapshot data and diagnostic monitoring test results (A/F sensor, HO2S related). NOTE: Recording can be facilitated using the screen capture function of the PC.	-	Go to the next step.
3	PURPOSE: INSPECT A/F SENSOR CONNECTOR FOR MALFUNCTION Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location. Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
4	PURPOSE: INSPECT PCM CONNECTOR FOR MALFUNCTION Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location. Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
5	PURPOSE: INSPECT A/F SENSOR CONTROL CIRCUIT FOR OPEN CIRCUIT Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location. Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
6	PURPOSE: VERIFY A/F SENSOR INPUT SIGNAL Start the engine and warm it up completely. Access the A/F_SEN_CUR PID using the M-MDS. (See PID/DATA MONITOR INSPECTION .) Drive the vehicle under the following conditions. WARNING: When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later. While performing this step, always operate the vehicle in a safe and lawful manner. After increasing the engine speed to 3, 000 rpm, decelerate using engine braking. Is the displayed PID value as follows? A/F_SEN_CUR: 0.25 mA or more	Yes	Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
6		No	Go to the next step.
7	PURPOSE: VERIFY CONNECTOR CONNECTIONS Access the A/F_SEN_CUR PID using the M-MDS. (See PID/DATA MONITOR INSPECTION .) Does the PID value fluctuate when the following connectors are shaken? A/F sensor PCM	Yes	Repair or replace the applicable wiring harness or connector parts. Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
7		No	Replace the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION (VIN 7, L) .) Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.