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1.

Many malfunctions in the electrical system are caused by poor harness and terminals.

Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

2.

Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.

3.

Has a problem been found?

▶ Using a GDS, check PCM software version and upgrade as necessary. If version is the newest one, check PCM for contamination, deterioration, or damage.

▶ If the diagnostics have been performed correctly with no failure found, replace the ECM/PCM and then go to "Verification of Vehicle Repair" procedure.

caution

When replacing the PCM, the vehicle equipped with the immobilizer must be performed procedure as below.

[In the case of installing used PCM]

1) Perform "PCM Neutral mode" procedure with GDS. (Refer to "Immobilizer" in BE group)

2) After finishing "PCM Neutral mode", perform "Key teaching" procedure with GDS. (Refer to "Immobilizer" in BE group)

[In the case of installing new PCM]

Perform "Key teaching" procedure with GDS. (Refer to "Immobilizer" in BE group)

caution

When replacing the PCM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.

[In the case of installing used PCM]

1) Perform "PCM Neutral mode" procedure with GDS. (Refer to "Smart key" in BE group)

2) After finishing "PCM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the PCM learns the smart key information automatically.

[In the case of installing new PCM]

Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the PCM learns the smart key information automatically.

▶ If voltage fluctuates, check circuit for loose, bent or corroded terminals, Repair as necessary and go to "Verification of Vehicle Repair" procedure