PCM Inspection
- Ignition "OFF".
- Connect VMI to KDS/GDS and set up an oscilloscope as follow (4-channel);
Channel A (+): Pin No. 1 (COM) terminal of Alternator.
Channel A (-): Pin No. 2 (L) terminal of Alternator.
Channel B (+): Pin No. 3 (FR) terminal of Alternator.
Channel B (-): Pin No. 1 (LIN Line) terminal of Battery Sensor.
- Ignition "ON"
- Test Condition: Engine Idle & No Electrical Load and Electrical Load.
Specification: Refer to Fig 1 Below
Courtesy of KIA MOTORS AMERICA, INC.
- Is the measured value within specification?
YES
- Go to next procedure.
NO
- Carefully re-do this troubleshooting guide steps.
- If the diagnostics have been performed correctly with no failure found, replace the PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
CAUTION: When replacing the ECM/PCM, the vehicle equipped with the immobilizer must be performed procedure as below.
[In the case of installing used ECM/PCM]- Perform "ECM Neutral mode" procedure with GDS. (Refer to "IMMOBILIZER SYSTEM " )
- After finishing "ECM Neutral mode", perform "TEACHING PROCEDURES " procedure with GDS. (Refer to "IMMOBILIZER SYSTEM " )
[In the case of installing new ECM/PCM]
Perform "TEACHING PROCEDURES " procedure with GDS. (Refer to "IMMOBILIZER SYSTEM " )CAUTION: When replacing the ECM/PCM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.
[In the case of installing used ECM/PCM]- Perform "ECM Neutral mode" procedure with GDS. (Refer to "SMART KEY " )
- After finishing "ECM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM/PCM learns the smart key information automatically.
[In the case of installing new ECM/PCM]
Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM/PCM learns the smart key information automatically.