Test Notes

NORMAL OPERATIONS
Diagnostic Trouble Code 84 refer to Diagnostic Trouble Code 44 The air bag diagnostic monitor measures the resistance between Pin 21 and the reference ground at Pin 18. If the air bag diagnostic monitor measures a difference of more than 2.0 ohms between the ground at Pin 18 and the ground at Pin 21, the air bag diagnostic monitor will store in memory and flash out on the air bag indicator a DTC 44. Should the difference in resistance between Pin 18 and Pin 21 be serviced or otherwise reduced to less than 2.0 ohms, the air bag diagnostic monitor will flash out a DTC 84 (or a higher priority DTC if one exists) on the next ignition switch cycle.

NOTE: Circuit 618 (P/LG) is riveted to the side of the RH radiator primary crash sensor case and the case of the sensor is grounded to the vehicle at its mounting point.

POSSIBLE CAUSES

High Resistance on Pin 21 to Ground Can Be Caused By:

- A poor attachment of RH radiator primary crash front air bag sensor and bracket due to loose mounting, dirt, or corrosion at its mounting location.

- An open or damaged wire in Circuit 618 (P/LG).

- An open wire or loose rivet inside RH radiator primary crash front air bag sensor and bracket.

- A poor reference ground at Pins 10 and 18 of the air bag diagnostic monitor Circuit 57 (BK)