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Diagnostic Procedure

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DTC P0103-00: (PCM, VIN Y) DIAGNOSTIC PROCEDURE

STEP INSPECTION RESULTS ACTION
1 RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
NOTE:
  • Recording can be facilitated using the screen capture function of the PC.
  • Record the FREEZE FRAME DATA/snapshot data on the repair order.
 - 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.
No Go to the next step.
3 DETERMINE IF MAF SENSOR OR WIRING HARNESS MALFUNCTION
  • Access the MAF PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST ).
  • Verify the MAF PID value.
  • Is the MAF PID value 5 V or B+?
 Yes Go to Step 7.
No Go to the next step.
4 INSPECT MAF SENSOR/IAT SENSOR No. 1 CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the MAF sensor/IAT sensor No. 1 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 9.
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 9.
No Go to the next step.
6 INSPECT MAF SENSOR
 Yes Replace the MAF sensor/IAT sensor No. 1, then go to Step 9.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 1 REMOVAL/INSTALLATION [VIN Y] ).
No Go to Step 9.
7 INSPECT MAF SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
  • Switch the ignition off.
  • Disconnect the MAF sensor/IAT sensor No. 1 connector.
  • Access the MAF PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST ).
  • Verify the MAF PID value.
  • Is the MAF PID value 5 V or B+?
 Yes Refer to the wiring diagram and verify whether or not there is a common connector between MAF sensor/IAT sensor No. 1 terminal C and PCM terminal 2BC.
If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 9.
No Go to the next step.
8 INSPECT MAF SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT
  • Verify that the MAF sensor/IAT sensor No. 1 connector is disconnected.
  • Switch the ignition off.
  • Disconnect the PCM connector.
  • Inspect for continuity between MAF sensor/IAT sensor No. 1 terminal B (wiring harness-side) and PCM terminal 2AY (wiring harness-side).
  • Is there continuity?
 Yes Replace the MAF sensor/IAT sensor No. 1, then go to the next step.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 1 REMOVAL/INSTALLATION [VIN Y] ).
No Refer to the wiring diagram and verify whether or not there is a common connector between MAF sensor/IAT sensor No. 1 terminal B and PCM terminal 2AY.
If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has an open circuit.

Go to the next step.
9 VERIFY DTC TROUBLESHOOTING COMPLETED
  • Always reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC ).
  • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST ).
  • Is the same Pending DTC present?
 Yes Repeat the inspection from Step 1.
  • If the malfunction recurs, replace the PCM.

(See PCM REMOVAL/INSTALLATION [VIN Y] ).
Go to the next step.
No Go to the next step.
10 VERIFY AFTER REPAIR PROCEDURE
 Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No DTC troubleshooting completed.
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