Pinpoint Test F: The Restraint Control Module (RCM) Does Not Respond To The Diagnostic Tool
Test Step
F1 CHECK THE RCM C310b FOR DAMAGE
- Key in OFF position.
- Deactivate the air bag system, refer to AIR BAG RESTRAINT SYSTEMS .
- Disconnect: RCM C310b.
- Inspect the RCM C310b for damage.
- Is the RCM C301b OK?
Result / Action to Take
Yes
GO to F2.
No
REPAIR the RCM C310b. CARRY OUT the diagnostic tool data link test.
Test Step
F2 CHECK CIRCUIT 70 (LB/WH) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between the DLC C251 pin 7, circuit 70 (LB/WH), harness side and the RCM C310b pin 4, circuit 70 (LB/WH), harness side.
- Is the resistance less than 5 ohms?
Result / Action to Take
Yes
GO to F3.
No
REPAIR the circuit in question. CARRY OUT the diagnostic tool data link test.
Test Step
F3 CHECK FOR CORRECT RCM OPERATION
- Disconnect all the RCM connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all the RCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Result / Action to Take
Yes
INSTALL a new RCM. REFER to AIR BAG RESTRAINT SYSTEMS . CARRY OUT the diagnostic tool data link test.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.