| 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 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 |
VERIFY DTC FOR MODULE COMMUNICATION
- Switch the ignition off, then ON (engine off).
- Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST
).
- Are any other PENDING CODEs and/or DTCs present?
|
Yes |
Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE ). |
| No |
Go to the next step. |
| 4 |
INSPECT MAF SENSOR/IAT SENSOR No. 1 CONNECTOR CONDITION
- 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 11. |
| 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 11. |
| No |
Go to the next step. |
| 6 |
INSPECT MAF SENSOR/IAT SENSOR No. 1 CIRCUIT FOR OPEN CIRCUIT
- Verify that the MAF sensor/IAT sensor No. 1 and PCM connectors are disconnected.
- Inspect for continuity between the following terminals (wiring harness-side):
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT
- Is there continuity?
|
Yes |
Go to the next step. |
| No |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT
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 Step 11.
|
| 7 |
INSPECT MAF SENSOR/IAT SENSOR No. 1 CIRCUIT FOR SHORT TO GROUND
- Verify that the MAF sensor/IAT sensor No. 1 and PCM connectors are disconnected.
- Inspect for continuity between the following terminals (wiring harness-side) and body ground:
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT
- Is there continuity?
|
Yes |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT 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 ground.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
Go to Step 11.
|
| No |
Go to the next step. |
| 8 |
INSPECT MAF SENSOR/IAT SENSOR No. 1 CIRCUIT FOR SHORT TO POWER SUPPLY
- Verify that the MAF sensor/IAT sensor No. 1 and PCM connectors are disconnected.
- Switch the ignition ON (engine off).
NOTE:
- Another DTC may be stored by the PCM detecting an open circuit.
- Measure the voltage at the following terminals (wiring harness-side):
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
|
Yes |
Go to the next step. |
| No |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT
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.
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT
- Is the voltage 0 V?
If there is no common connector:
- Repair or replace the wiring harness which has a short to power supply.
Go to Step 11.
|
| 9 |
INSPECT MAF SENSOR/IAT SENSOR No. 1 CIRCUITS FOR SHORT TO EACH OTHER
- Verify that the MAF sensor/IAT sensor No. 1 and PCM connectors are disconnected.
- Inspect for continuity between MAF sensor/IAT sensor No. 1 terminals A, C and B (wiring harness-side).
- Is there continuity?
|
Yes |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2AI
- MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2BE
- MAF sensor/IAT sensor No. 1 terminal C-PCM terminal 2AT
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 each other.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to each other.
Go to Step 11.
|
| No |
Go to the next step. |
| 10 |
INSPECT MAF SENSOR/IAT SENSOR No. 1
|
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 M]
). |
| No |
Go to the next step. |
| 11 |
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.
|
| No |
Go to the next step. |
| 12 |
VERIFY AFTER REPAIR PROCEDURE
|
Yes |
Go to the applicable DTC inspection.
(See DTC TABLE ). |
| No |
DTC troubleshooting completed. |