STEP 1. Scan tool (M.U.T.-III) other system DTC.
STEP 2. Check the battery.
STEP 3. Check the charging system.
STEP 4. Voltage measurement at AWC-ECU connector
STEP 5. Scan tool (M.U.T.-III) data list.
STEP 6. Measure the resistance at the AWC-ECU connector.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Resistance between AWC-ECU connector terminal GND1 and body ground.OK: Continuity exists (2 Ω or less)
Is the check result normal?
Go to Step 8. Go to Step 7.
STEP 7. Check the wiring harness between AWC-ECU connector terminal GND1 and body ground.
STEP 8. Measure the resistance at the AWC-ECU connector.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Resistance between AWC-ECU connector terminal FSL+, FSL- and body groundOK: No continuity
Is the check result normal?
Go to Step 10. Go to Step 9.
STEP 9. Check the wiring harness between electronic control coupling solenoid (front) connector and AWC-ECU connector terminal FSL+, FSL-.
STEP 10. Check of the electronic control coupling solenoid (front)
STEP 11. Measure the resistance at the AWC-ECU connector.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Resistance between AWC-ECU connector terminal SOL+, SOL- and body groundOK: No continuity
Is the check result normal?
Go to Step 13. Go to Step 12.
STEP 12. Check the wiring harness between electronic control coupling solenoid (center) connector and AWC-ECU connector terminal SOL+, SOL-.
STEP 13. Check of the electronic control coupling solenoid (center)
STEP 14. Scan tool (M.U.T.-III) data list.
STEP 15. Check whether the DTC is stored again.