Circuit Test R - Code 51, Diagnostic Monitor Internal Thermal Fuse Open: Notes

CAUTION: NEVER replace diagnostic monitor without first determining cause for Code 51 condition. If short to ground is not properly serviced, short may reoccur, once again destroying the thermal fuse in the diagnostic monitor.

NOTE: Before proceeding, follow air bag service precautions. See SERVICE PRECAUTIONS . After repairs are performed, recheck AIR BAG warning light for other fault codes. Perform system operation check. See TESTING - SYSTEM OPERATION CHECK .

NOTE: A thermal fuse is built into the diagnostic monitor. If a short to ground should occur in the air bag deployment circuit, the microcomputer in the diagnostic monitor will send a signal to the fuse causing it to open. The open fuse removes all firing power (battery/back-up power) from the deployment circuits. This prevents unwanted air bag deployments due to damaged vehicle wiring.