Inspection Procedure B-1: Electric tailgate main switch signal is not received.
| caution | Before replacing the ECU,
ensure that the input and output signal circuits are normal. |
COMMENTS ON TROUBLE SYMPTOM
PROBABLE CAUSES
- Electric tailgate main switch malfunction
- Damaged electric tailgate control unit
- Damaged wiring harness and connectors
DIAGNOSIS PROCEDURE
STEP 1. Electric tailgate main switch check
Q.
Is the check result normal?
STEP 2. Resistance measurement at electric tailgate main switch connector (earth line terminal).
| (1)Disconnect the connector, and measure at the wiring harness side. |
| (2)Measure the resistance between electric tailgate main switch connector (earth line
terminal) and body earth. OK: Continuity exists (2 Ω or less) |
Q.
Is the check result normal?
STEP 3. Check of open circuit in earth line between electric tailgate main switch connector and body earth.
Q.
Is the check result normal?
STEP 4. Check of open circuit in MASW line between electric tailgate control unit connector and electric tailgate main switch connector.
Q.
Is the check result normal?
STEP 5. System retest
Q.
Is the check result normal?