Electrical Equipment

No Response from Occupant Restraint Controller






For a complete wiring diagram, refer to.






Test Step 1 - Test for Intermittent Condition

• Check for any TSBs related to the condition. Perform any applicable TSB procedures before continuing.

• Turn the ignition on.

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

• With the scan tool, select ECU View.

• 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 Test Step 2

No

• 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.

Test Step 2 - Ground Circuit Open







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

• Disconnect the ORC module harness connectors.

• Connect the appropriate load tool ACM adaptor to the ORC connectors.

• Measure the resistance between ground and the ground circuit.

Is the resistance less than 10k ohms?

Yes

• Go to Test Step 3

No

• Repair the ground circuit for an open.

• Perform the Airbag Verification Test. Refer to => [ Supplemental Restraints Verification Test ] Supplemental Restraints Verification Test.

Test Step 3 - Fused B+ Circuit Open or Shorted






• Check the totally integrated power module for any ignition related DTCs before proceeding.


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

• Using a test lamp connected to ground, check the fused B+ circuit.

Does the test lamp illuminate brightly?

Yes

• Go to Test Step 4

No

• Repair the fused B+ circuit for an open or short.

• Perform the Airbag Verification Test. Refer to => [ Supplemental Restraints Verification Test ] Supplemental Restraints Verification Test.

Test Step 4 - Fused RUN/START Relay Output Circuit Open or Shorted






• Using a test lamp connected to ground, check the fused RUN/START relay output circuit.

Does the test lamp illuminate brightly?

Yes

• Go to Test Step 5

No

• Repair the fused RUN/START relay output circuit for an open or short.

• Perform the Airbag Verification Test. Refer to => [ Supplemental Restraints Verification Test ] Supplemental Restraints Verification Test.

Test Step 5 - CAN C Bus (+) Circuit Open






• Turn the ignition off.

• Disconnect the TIPM C7 harness connector.

• Measure the resistance of the CAN C bus (+) circuit between the TIPM C7 harness connector and the ORC module connector.

Is the resistance less than 5.0 ohms?

Yes

• Go to Test Step 6

No

• Repair the CAN C bus (+) circuit for an open.

• Perform the Airbag Verification Test. Refer to => [ Supplemental Restraints Verification Test ] Supplemental Restraints Verification Test.

Test Step 6 - CAN C Bus (-) Circuit Open






• Measure the resistance of the CAN C bus (-) circuit between the TIPM C7 harness connector and the ORC module connector.

Is the resistance less than 5.0 ohms?

Yes

• Replace the ORC module..

• Perform the Airbag Verification Test. Refer to => [ Supplemental Restraints Verification Test ] Supplemental Restraints Verification Test.

No

• Repair the CAN C bus (-) circuit for an open.

• Perform the Airbag Verification Test. Refer to => [ Supplemental Restraints Verification Test ] Supplemental Restraints Verification Test.