Seat Occupant Classification Module - Air Bag: Testing and Inspection

OCM Power Supply and Ground Circuit Check

Circuit Diagram










Troubleshooting

1. Battery voltage check

Measure voltage on battery.

Is voltage 9 - 16 V?
YES -
Go to Step 2.
NO -
Check charging system and repair wiring. Testing and Inspection

2. Connection check

Check for proper connection to each connector.

Is it connected securely?
YES -
Go to Step 3.
NO -
Intermittent trouble. Check for intermittent trouble. Intermittent Connection and Poor Contact Inspection
If OK, substitute a known-good SDM and recheck DTC. SDM Removal and Installation

3. Circuit fuse check

Push engine switch to change ignition mode to "ON".
Check "A/B" fuse for blowing.

Is "A/B" fuse in good condition?
YES -
Go to Step 4.
NO -
Repair defective wire circuit. Replace "A/B" fuse, after repairing it.

4. OCM with sensor mat power supply voltage check

Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "L08" connector.
Check for proper connection to "L08-2" terminal.
Push engine switch to change ignition mode of keyless push start system to "ON".
Measure voltage between "L08-2" terminal and ground.
Special Tool

(A): 09932-76010





Is voltage 10 - 14 V?
YES -
Go to Step 5.
NO -
Repair defective wire circuit.

5. OCM with sensor mat ground circuit check

Push engine switch to change ignition mode to "OFF".
Disconnect "L05" connector.
Check for proper connection to "L08-3" terminal.
Check for proper connection to "L05-16" terminal.
Measure resistance between "L05-16" and "L08-3" terminals.
Special Tool

(A): 09932-76010





Is resistance 1ohms or less?
YES -
OCM power supply and ground circuit are in good condition.
NO -
Repair defective wire circuit.