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Function Inspection Using M-MDS

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: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
  • Is the DTC P0171:00 on freeze frame data?
 Yes Go to the next step.
No Go to the troubleshooting procedure for DTC on freeze frame data.
(See DTC TABLE (US) .)
3 PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
  • Record the freeze frame data/snapshot data.
NOTE:
  • Recording can be facilitated using the screen capture function of the PC.
 - Go to the next step.
4 PURPOSE: VERIFY IF INPUT SIGNAL TO PCM AFFECTS FUEL INJECTION
 Yes Inspect the suspected sensor and related wiring harness.
  • If there is any malfunction:
    • Repair or replace the malfunctioning part.
      • Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
  • If there is no malfunction:
    • Go to the next step.
No Go to the next step.
5 PURPOSE: VERIFY CONNECTOR CONNECTIONS
  • Start the engine.
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • FUEL_PRES
    • FUEL_PUMP_REQ
    • PRG_DUTY
    • MAF
    • MAP
    • MAP_VOLT
    • IAT2
    • VLV_TIMING_ACT_EX
      • VLV_TIMING_ACT_IN
  • When the following parts are shaken, does the PID value include a PID item which has changed?
    • Fuel pressure sensor
    • Fuel pump control module
    • Purge solenoid valve
    • MAF sensor
    • MAP sensor/IAT sensor No. 2
    • OCV
    • Electric variable valve timing motor/driver
      • PCM
 Yes Repair or replace the applicable connector parts.
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
No Go to the next step.
6 PURPOSE: VERIFY FUEL PRESSURE (HIGH-SIDE) MALFUNCTION
  • Switch the ignition off.
  • Reconnect all disconnected connectors.
  • Start the engine and warm it up completely.
  • Access the FUEL_PRES PID using the M-MDS. (See PID/DATA MONITOR INSPECTION .)
  • Is the FUEL_PRES PID value approx. 10 MPa {102 kgf/cm2 , 1450 psi}?
 Yes Go to the next step.
No FUEL_PRES PID value is lower than 10 MPa {102 kgf/cm2 , 1450 psi}:
  • Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1. FUEL_PRES PID value is higher than 10 MPa {102 kgf/cm2 , 1450 psi}:
  • Go to Step 8.
7 PURPOSE: VERIFY FUEL PRESSURE (LOW-SIDE) MALFUNCTION
NOTE:
  • Verify the fuel pressure on the low pressure side with the operation of the high pressure fuel pump turned off.
  • Bleed the remaining pressure in the fuel line using the following procedure.
    1. Switch the ignition off.
    2. Disconnect the high pressure fuel pump connector.
    3. Remove the fuel pump relay. (See RELAY LOCATION (US) .)
    4. Start the engine and wait until the engine stalls.
  • Switch the ignition off.
  • Install the fuel pump relay.
  • Switch the ignition ON (engine off).
  • Display PID FUEL_PRES and simulation item FUEL_PUMP_REQ using the M-MDS. (See PID/DATA MONITOR INSPECTION .)

    (See SIMULATION INSPECTION .)

  • Turn simulation item FUEL_PUMP_REQ on.
  • Is the FUEL_PRES PID value 475-555 kPa {4.85-5.65 kgf/cm2 , 68.9-80.4 psi}?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 5.
8 PURPOSE: VERIFY IF MALFUNCTION CAUSED BY FUEL INJECTOR IMPROPER OPERATION
  • Switch the ignition off.
  • Reconnect all disconnected connectors.
  • Start the engine and idle it.
  • Access the following simulation items using the M-MDS: (See SIMULATION INSPECTION .)
    • INJ
  • Turn each fuel injector from on to off using the simulation items.
  • Does the vibration during idling worsen?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 7.
9 PURPOSE: VERIFY IF MALFUNCTION CAUSED BY PURGE SOLENOID VALVE IMPROPER OPERATION
  • Start the engine and idle it.
  • Access the PRG_DUTY PID using the M-MDS. (See PID/DATA MONITOR INSPECTION .)
  • Is the PRG_DUTY PID value normal?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 8.
10 PURPOSE: VERIFY MAF SENSOR
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 10.
11 PURPOSE: VERIFY MAP SENSOR
  • Start the engine and idle it.
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • MAP
      • MAP_VOLT
  • Are all items normal?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 12.
12 PURPOSE: VERIFY INTAKE VALVE TIMING
  • Start the engine and idle it.
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • VLV_TIMING_ACT_IN
      • VLV_TIMING_DSD_IN
  • Depress the accelerator pedal to increase the engine speed.
  • Does the monitor value of the PID item VLV_TIMING_ACT_IN conform to the VLV_TIMING_DSD_IN PID value?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 14.
13 PURPOSE: VERIFY EXHAUST VALVE TIMING
  • Start the engine and idle it.
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • VLV_TIMING_ACT_EX
      • VLV_TIMING_DSD_EX
  • Perform the following:
    1. Warm up the engine to allow the engine coolant temperature to reach 80°C {176°F} or more.
    2. Shift to 2nd gear (MTX)/D position (ATX) and rapidly accelerate the vehicle to 50 km/h {31 mph} (to operate hydraulic variable valve timing control).
    3. Decelerate to idling.
    4. Shift to 2nd gear (MTX)/D position (ATX) and rapidly accelerate the vehicle to 50 km/h {31 mph} again.
  • Does the monitor value of the PID item VLV_TIMING_ACT_EX conform to the VLV_TIMING_DSD_EX PID value?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 17.
14 PURPOSE: VERIFY A/F SENSOR
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 18.
15 PURPOSE: INSPECT FOR OTHER RELATED DTCs
  • 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) .)
Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
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