On-Board Diagnostic Check

INSPECTION PROCEDURE USING A VOLTMETER

Diagnostic Connector (Behind Glove Compartment):

Diagnostic Connector Grounded:

1. Connect the positive lead of an analogue voltmeter to the self-diagnosis terminal and the negative lead to the terminal ground.

2. Turn on the ignition switch. The engine control unit's memory contents will start immediately.

(a) If the system is in normal condition (no codes in memory), the voltmeter pointer will not deflect.

(B) If the system has stored codes, the voltmeter pointer will deflect to indicate the malfunction code number. If plural items are activated, the codes will be indicated sequentially from the smallest code number. If codes are stored, refer to COMPUTERIZED ENGINE CONTROLS