“AIR BAG” Warning Light Does Not Come ON
Precautions: Precautions for Air Bag System Service · Precautions for Handling and Storage of Air Bag System Components · Precautions for Disposal of Air Bag and Seat Belt Pretensioner · Precautions for Restraint · General safety (00)
Circuit Diagram
| [A]: | 4WD model | 1. | IG1 relay | 8. | CAN driver |
| [B]: | “G240” connector (View: [a]) | 2. | SDM | 9. | “AIR BAG” warning light |
| [C]: | “L04” connector (View: [a]) | 3. | J/B | 10. | P/S control module |
| A1: | Combination meter power supply circuit | 4. | “MTR” fuse | 11. | 4WD control module |
| A2: | Combination meter ground circuit | 5. | “A/B” fuse | 12. | Floor harness |
| B1: | SDM power supply circuit | 6. | Combination meter | 13. | Instrument panel harness |
| B2: | SDM ground circuit | 7. | CPU (Combination meter) |
Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Warning light check
1)Set ignition “ON”.
Do other indicator lights come ON?
|
Go to Step 2.
|
Go to Step 3.
|
| 2 |
DTC check
1)Check that ignition is “OFF”.
2)Connect scan tool to DLC.
3)Set ignition “ON”.
4)Check for DTC.
Is DTC U0073-88 detected?
|
Go to “Troubleshooting for Communication Bus Off”.
•M16A model:
•K14C model: •D16AA model: |
Go to Step 3.
|
| 3 |
Fuse check
Is “MTR” fuse for combination meter in good condition?
|
Go to Step 4.
|
Replace “MTR” fuse and check for short circuit to ground.
|
| 4 |
CAN communication circuit check
1)Check CAN communication circuit between SDM and combination meter.
Is circuit in good condition?
|
Go to Step 5.
|
Repair defective wire harness.
|
| 5 |
Combination meter power supply circuit check
1)Check that ignition is “OFF”.
2)Remove combination meter.
3)Check for proper connection to “G240” connector.
4)If OK, set ignition “ON” and measure voltage between connector terminal “G240-3” and ground.
Is it 10 – 14 V?
|
Go to Step 6.
|
Repair “A1” circuit.
|
| 6 |
Combination meter ground circuit check
Is resistance less than 1 Ω?
|
Replace combination meter and recheck “AIR BAG” warning light operation.
|
Repair “A2” circuit.
|
NOTE:
Upon completion of inspection and repair work, perform the following items.
•Reconnect all air bag system components and check that all components are properly mounted.
•Repeat Air Bag Diagnostic System Check to check that the trouble has been solved.
•Repeat Air Bag Diagnostic System Check to check that the trouble has been solved.