RAM 3500 Truck 4WD V8-360 5.9L VIN 5 Magnum (1998)
Malfunction Indicator Lamp: Testing and Inspection
The diagnosis found here addresses an inoperative malfunction indicator (Check Engine) lamp condition.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO AIR BAGS AND SEAT BELTS/AIR BAGS BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE.
FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
If the malfunction indicator lamp fails to light during the bulb test (about two seconds after the ignition switch is turned to the On position), replace the
malfunction indicator lamp bulb with a known good unit. If the indicator lamp still fails to operate, diagnosis of the Powertrain Control Module (PCM)
and the Chrysler Collision Detection (CCD) data bus should be performed with a DRB scan tool. For further diagnosis of the malfunction indicator lamp
and the instrument cluster circuitry, see Instrument Cluster in the Diagnosis and Testing.