Wrangler L4-150 2.5L VIN P MFI (1993)
Malfunction Indicator Lamp: Testing and Inspection
1.
Turn ignition switch to Run position.
2.
Ground pin 4 of cluster connector.
3.
If lamp does not illuminate, replace bulb.
4.
If bulb is satisfactory, turn ignition switch to Off position and check for continuity between cluster connector pin 4 and engine controller cavity 32.
5.
If continuity exists, replace engine controller. If not, repair open in circuit.
