Except Advanced Air Bag

"AIR BAG" Warning Light Comes ON Steady

Wiring Diagram










Troubleshooting

1.
Was "Air Bag Diagnostic System Check Flow" performed?
YES -
Go to Step 2.
NO -
Go to Air Bag Diagnostic System Check Flow Air Bag Diagnostic System Check Flow:Except Advanced Air Bag.

2. SDM power supply and ground circuit check

Check SDM power supply and ground circuit referring to Testing and Inspection SDM Power Supply and Ground Circuit Check:Except Advanced Air Bag.

Is SDM power supply and ground circuit in good condition?
YES -
Go to Step 3.
NO -
Repair defective power supply and ground circuit.

3. "AIR BAG" warning light circuit check

Disconnect combination meter connector "G241" referring to Service and Repair Combination Meter Removal and Installation.
Disconnect SDM connector "L04".
Check for proper connection to SDM connector at terminal "L04-2".
Check for proper connection to combination meter at terminal "G241-11".
If OK, measure resistance between "G241-11" and "L04-2" terminals.
Special Tool

(A): 09932-76010





Is measured resistance 1 ohms or less?
YES -
Go to Step 4.
NO -
Repair "YEL/BLK" wire (between combination meter and SDM connector) for open or high resistance.

4. "AIR BAG" warning light circuit check

Measure resistance between "L04-2" terminal and body ground.
Special Tool

(A): 09932-76010





Is measured resistance infinity?
YES -
Go to Step 5.
NO -
Repair "YEL/BLK" wire (between combination meter and SDM connector) for short to ground.

5. "AIR BAG" warning light circuit check

Connect SDM connector "L04" and combination meter connector "G241".
With ignition switch turned ON, measure voltage between "G241-11" terminal and body ground.
Special Tool

(A): 09932-76010





Is measured voltage in 8 - 12 V?
YES -
Replace combination meter.
NO -
Go to Step 6.

6. "AIR BAG" warning light circuit check

Disconnect combination meter connector "G241".
Measure voltage between "G241-11" terminal and body ground.
Special Tool

(A): 09932-76010





Is measured voltage in 10 - 14 V?
YES -
Replace combination meter.
NO -
Replace SDM.

NOTE:

Upon completion of inspection and repair work, perform the following items.

- Reconnect all air bag system components and ensure all components are properly mounted.
- Repeat Air Bag Diagnostic System Check Air Bag Diagnostic System Check:Except Advanced Air Bag
to confirm that the trouble has been corrected.