Without Scan Tool

To obtain an output of diagnostic trouble codes, proceed as follows:

1. Initial conditions

a. Battery voltage 11 volts or more

b. Closed throttle position (Throttle Position Sensor's IDL points closed)

c. Transmission in neutral position

d. Accessories switches OFF

e. Engine at normal operating temperature

2. Turn the ignition switch ON. Do not start the engine.






3. Using SST, connect terminals TE1 and E1 of the DLC 1. (SST 09843-18020)

Read Trouble Codes By Counting Flashes Of The MIL:

4. Read the diagnostic trouble code as indicated by the number of flashes of the Malfunction Indicator Lamp.







a. Normal System Operation (no malfunction)

^ The light will blink once every 0.52 seconds.






b. Malfunction Code Indication

^ In the event of a malfunction, the light will blink every 0.52 seconds. The first number of blinks will equal the first digit of a 2-digit diagnostic trouble code, and after a 1.5 second pause, the 2nd number of blinks will equal the 2nd digit. If there are 2 or more codes, there will be a 2.6 second pause between each code.

^ After all the codes have been output. there will be a 4.5 second pause and they will all be repeated as long as the terminals TE1 and E1 of the DLC 1 are connected.

HINT: In the event of a number of trouble codes, indication will begin from the smaller value and continue to the larger in order, then the pattern will repeat.






c. 2 trip detection logic:

Diagnostic Trouble Codes 21, 25, 26 and 71 use "2 trip detection logic". With this logic, when a malfunction is first detected, the malfunction is temporarily stored in the ECM memory. If the same case is detected again during the second drive test, this second detection causes the Malfunction Indicator Lamp to light up.

The 2 trip repeats the same mode a 2nd time. However. the Ignition Switch must be turned OFF between the 1st time and 2nd time.






5. After the diagnosis check, remove the SST. (SST 09843-18020)