Main Relay Operation Inspection

Verify that the main relay clicks when the ignition is switched ON and then off.
- If there is no operation sound, inspect the following:
  - Main relay (See RELAY INSPECTION .)
  - Wiring harness and connector between battery and main relay terminal A
  - Wiring harness and connector between PCM terminal 2K and main relay terminal E (Without coolant control valve)
  - Wiring harness and connector between PCM terminal 2B and main relay terminal E (With coolant control valve)