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Function Inspection Using M-MDS

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DIAGNOSTIC 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.
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: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC RELATED TO A/F SENSOR RESPONSIVENESS
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
    • P0133:00
 Yes Go to the next step.
No Go to Step 6.
4 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC RELATED TO PURGE SOLENOID VALVE
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
    • P0443:00
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC P0443:00 .)
Go to the next step.
No Go to the next step.
5 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC OCCURRING FROM FUEL SYSTEM RELATED PART
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE (US) .)
No A factor other than the HO2S can be considered the cause of the malfunction.
  • Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
6 PURPOSE: VERIFY FLUCTUATION OF HO2S INPUT SIGNAL AT START OF FUEL CUT
  • Start the engine and warm it up completely.
  • Access the HO2S_OUT_VOLT 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 4, 000 rpm, decelerate using engine braking.
  • Can a fluctuation in the displayed PID value be verified?
 Yes Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
  • If a malfunction occurs, perform diagnosis from Step 1 of the malfunction diagnostic procedure.
No HO2S signal can be considered the cause.
  • Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 4.
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