NO RESPONSE FROM ORC (OCCUPANT RESTRAINT CONTROLLER)

For a complete wiring diagram, refer to the Wiring Information.

Possible Causes
(Z913) (Z916) GROUND CIRCUITS OPEN
(F100) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR SHORTED
(F201) FUSED RUN/START RELAY OUTPUT (RUN/START) CIRCUIT OPEN OR SHORTED
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
OCCUPANT RESTRAINT CONTROLLER MODULE

1. TEST FOR INTERMITTENT CONDITION

1.	Turn the ignition on.

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

2.	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. (Z913) (Z916) GROUND CIRCUITS OPEN

WARNING:

Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

1.	Disconnect the Occupant Restraint Controller Module harness connectors.

2.	Connect the appropriate Load Tool ACM Adaptor to the ORC connectors.

3.	Measure the resistance between ground and the (Z913) and (Z916) ground circuits.

Is the resistance below 10k ohms?

Yes

Go To 3

Repair the (Z913) or (Z916) ground circuit for an open.
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure)

3. (F100) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR SHORTED

NOTE: Check the TIPM for any ignition related DTCs before proceeding. If set (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing).

WARNING:

Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

1.	Using a 12-volt test light connected to ground, check the (F100) Fused Run Relay Output circuit.

Does the test light illuminate brightly?

Yes

Go To 4

Repair the (F100) Fused Run Relay Output circuit for an open or short.
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure)

4. (F201) FUSED RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED

1.	Using a 12-volt test light connected to ground, check the (F201) Fused Run/Start Relay Output circuit.

Does the test light illuminate brightly?

Yes

Go To 5

Repair the (F201) Fused Run/Start Relay Output circuit for an open or short.
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure)

5. (D65) CAN C BUS (+) CIRCUIT OPEN

1.	Turn the ignition off.

2.	Disconnect the TIPM C1 harness connector.

3.	Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the Occupant Restraint Controller Module connector.

Is resistance below 5.0 ohms?

Yes

Go To 6

Repair the (D65) CAN C Bus (+) circuit for an open.
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure)

6. (D64) CAN C BUS (-) CIRCUIT OPEN

1.	Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the Occupant Restraint Controller Module connector.

Is resistance below 5.0 ohms?

Yes

Replace the Occupant Restraint Controller Module in accordance with the Service Information.
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure)

Repair the (D64) CAN C Bus (-) circuit for an open.
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure)

NO RESPONSE FROM ORC (OCCUPANT RESTRAINT CONTROLLER)

Possible Causes