*NO RESPONSE FROM ORC (OCCUPANT RESTRAINT CONTROLLER)

For a complete wiring diagram Refer to Section 8W.

Possible Causes

(F201) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN

(F100) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN

(Z104) GROUND CIRCUIT OPEN

(D25) PCI BUS CIRCUIT OPEN

OCCUPANT RESTRAINT CONTROLLER

Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

With the scan tool, select ECU view.

NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.

Does the scan tool display a red X next to the module?

Yes

Go To 2

The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.

2. CHECKING FOR VOLTAGE AT THE ORC

WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Disconnect the Occupant Restraint Controller C1 and C2 harness connectors.
Connect the appropriate Load Tool ORC Adapter to the ORC connector.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

Using a 12-volt test light connected to ground, probe the (F100) Fused Ignition Switch Output (run) circuit and the (F201) Fused Ignition Switch Output (run-start) circuit.

NOTE: One open circuit will not cause a NO RESPONSE condition.

Did the test light illuminate brightly on both circuits?

Yes

Go To 3

Repair the (F100) Fused Ignition Switch Output (run) or the (F201) Fused Ignition Switch Output (run-start) circuit for an open.
Perform the AIRBAG VERIFICATION TEST – VER 1.

3. (Z104) GROUND CIRCUIT OPEN

Turn the ignition off.
Using a 12-volt test light connected to 12-volts, probe the (Z104) ground circuit.

Did the test light illuminate brightly?

Yes

Go To 4

Repair the (Z104) Ground circuit for an open.
Perform the AIRBAG VERIFICATION TEST – VER 1.

4. (D25) PCI BUS CIRCUIT OPEN

Disconnect the scan tool from the DLC connector.
Measure the resistance of the (D25) PCI Bus circuit between the DLC and the Occupant Restraint Controller C1 harness connector.

Is the resistance below 5.0 ohms?

Yes

Replace the Occupant Restraint Controller Module in accordance with the service information.
Perform the AIRBAG VERIFICATION TEST – VER 1.

Repair the (D25) PCI Bus circuit for an open.
Perform the AIRBAG VERIFICATION TEST – VER 1.