Diagnostic Test Mode 1

Test Mode 1:

DIAGNOSTIC TEST MODE 1 - BULB CHECK
This test is done with the key "ON" and the engine "OFF". In this mode, the RED LED in the ECCS Control Module and the MALFUNCTION INDICATOR LAMP in the instrument panel stay "ON". If EITHER remain "OFF", check the bulb in the MALFUNCTION INDICATOR LAMP or the RED LED.

DIAGNOSTIC TEST MODE 1 - MALFUNCTION WARNING
This test is done with the engine running. The Malfunction Indicator Lamp and the Red LED will be "ON" when one of the Malfunction Indicator Lamp items listed below, the ECCS Control Module's Central Processing Unit or the Camshaft Position Sensor is malfunctioning.

DIAGNOSTIC TROUBLE CODE NUMBER AND MALFUNCTION
12 Mass air flow sensor circuit
13 Engine coolant temperature sensor circuit
14 Vehicle speed sensor circuit
31 ECM (ECCS control module)
32 EGR function
33 Heated oxygen sensor circuit (Left side)
35 EGR temperature sensor circuit
43 Throttle position sensor circuit
45 Injector leak
51 Injector circuit
53 Heated oxygen sensor circuit (Right side)

NOTE: These Diagnostic Trouble Code Numbers are clarified in Diagnostic Test Mode II - SELF-DIAGNOSTIC RESULTS.

NOTE: The RED LED and the MALFUNCTION INDICATOR LAMP will turn off when normal condition is detected. But, the On-board Diagnostic Test Mode II - Self-Diagnostic Results memory will hold the diagnostic trouble code until the memory is cleared.