STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line
(1) caution | To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III). |
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III)
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(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the CAN bus line found to be normal?
Go to Step 2. Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
STEP 2. Using scan tool (M.U.T.-III), read the SRS diagnostic trouble code.
STEP 3. Check the seat belt switch.
STEP 4. Resistance measurement at the seat belt switch (driver’s side) connector
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the resistance between the seat belt switch (driver’s side) connector and ground.OK: The resistance should be 2 ohms or less.
Is the check result normal?
Go to Step 6. Go to Step 5.
STEP 5. Check of open circuit in ground line between seat belt switch (driver’s side) connector and ground.
STEP 6. Check of short to power supply circuit in SBDS line between combination meter connector and seat belt switch (driver’s side) connector.
STEP 7. Check of short to power supply, and open circuit in BWLP line between combination meter connector and hazard indicator assembly connector.
STEP 8. Retest the system.
The seat belt reminder function should work normally.Is the check result normal?
: The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ). : Replace the combination meter.
: Replace the combination meter.
: Replace the hazard indicator assembly, and then go to Step 9.
STEP 9. Retest the system.