Step 1: Self-Diagnostic Code “9 – 4” Keyless System Authentication Error
This condition:
ECM detected that its ID code does not correspond with the ID code registered in the keyless control unit.
Correction:
Change the ECM to correspond with their ID codes.
Step 2: Self-Diagnostic Code “9 – 5” Keyless System Communication Error
This condition:
The ECM cannot receive CAN communication information from keyless control unit.
Correction:
• Check communication such as open circuit on communication wire, poor or loose connections.
• Check the CAN communication line output voltage.
Refer to “Inspection of the Keyless Control Unit and Its Circuit” (Page 1A-84).
Step 3: Self-Diagnostic Code “9 – 6” Keyless System Failure
This condition:
There is an irregularity on the internal circuit of the keyless control unit.
Correction:
Replace the keyless control unit and ECM.
Step 4: Troubleshooting Without Self-Diagnostic Code
Before troubleshooting, make sure that there is not a self-diagnostic code indication.
