Without Scan Tool

Trouble codes can be read through the malfunction indicator lamp (MIL) indicator in the instrument panel. To obtain accurate results the following initial conditions must be present:

a. Battery voltage above 11 volts.
b. Throttle valve in fully closed position.
c. Transmission in Neutral.
d. All accessories OFF.

After conditions have been met, proceed with the following procedure to extract codes:

Jumper Installation:

The DLC is located in the engine compartment and is mounted to the left strut tower. The DLC is used to access DTCs that may be stored in the ECM/PCM memory. Diagnostic trouble codes (DTCs) stored in the ECM/PCM memory can be read by counting the number of flashes of the malfunction indicator lamp (MIL) with the ignition switch in the "ON" position with the diagnostic request terminal "TE1" grounded. The ECM/PCM enters its normal diagnostic mode and emits DTCs that have been detected one time within the last two ignition cycles. When "TE2" is grounded, the ECM/PCM enters its test diagnostic mode and lowers the threshold at which DTCs can be stored in the ECM/PCM memory. This function is helpful when diagnosising intermittent problems. With "TE1" and "TE2" grounded, DTCs that cannot be read in the normal diagnostic mode can be read.