Diagnosis Tips Concerning The Entire System

Check that relevant wiring harness connectors are engaged correctly. If a failure is found, repair the connectors and check the trouble symptom again.
If the wiring harness connectors are engaged correctly, check the wiring harness. If the wiring harness is in good condition, replace relevant components.
NOTE: If a system communication (CAN communication) related failure is suspected, diagnose the CAN communication system.