When the ECM fails, all 4 injectors would not work.
The DLC is located underdash next to center console, above right foot of driver and if it is not found, it is a pre-ODB-II system, meaning rhe vehcile could be earlier than 1996 model. Code retrieval can be done manually with the aid of an analog voltmeter, LED lamp or the MIL.
CHECK ENGINE Light/Malfunction Indicator Light (MIL)
Turn ignition on. Connect a jumper wire between Self-Test Input (STI) pigtail and signal return (SIG RTN) terminal of Data Link Connector (DLC). See Fig. 2 -3. Go to KOEO SELF-TEST.
Ensure engine is warmed to normal operating temperature. If engine does not start (or stalls after starting), continue KOEO SELF-TEST.
DO NOT depress throttle. Turn ignition off. Ensure test equipment is properly attached. Turn ignition on (engine off). Record all KOEO and Continuous Memory Codes.
If a Code 111 (pass code) is not retrieved, service KOEO codes. See
DIAGNOSTIC TROUBLE CODE REFERENCE. If PCM will not output codes, go to TEST QA. If diagnostic trouble codes are retrieved:
If MIL/CHECK ENGINE light is on, service diagnostic trouble codes in order retrieved. See the DIAGNOSTIC TROUBLE CODE REFERENCE table.
If vehicle has a no-start condition, go to TEST AA.
If vehicle displays a Code 111 (pass code) and does not have any symptoms described in previous steps, go to KOER SELF-TEST.
Sunday, January 9th, 2011 AT 8:59 PM