Without Scan Tool
OUTPUT OF DIAGNOSTIC CODESTo obtain an output of diagnostic codes, proceed as follows:
1. Initial conditions
(a) Battery voltage above 11 volts
(b) Throttle valve fully closed (throttle position sensor IDLE points closed)
(c) Transmission in neutral position
(d) Accessory switches OFF
2. Turn the ignition switch to ON. Do not start the engine.
3. Using SST (09843 - 18020), connect terminals TE1 and E1 of the check connector.
NOTE: The check connector is located under the driver's seat.
4. Read the diagnostic code as indicated by the number of flashes of the "CHECK ENGINE" warning light.
(a) Normal System Operation-The light will blink once every 0.25 seconds.
(b) Malfunction Code Indication
The light will blink a number of times equal to the malfunction code indication as follows:
1. Between the first digit and second digit, 1.5 seconds.
2. Between code and code 2.5 seconds.
3. Between all malfunction codes 4.5 seconds.
The diagnostic code series will be repeated as long as the check connector terminals TE1 and El are connected.
NOTE: In the event of a number of trouble codes, indication will begin from the small value and continue to the larger in order.
(c) (2 trip detection logic)
Diagnostic codes 25, 26, 27 and 71 use 2 trip detection logic. With this logic, when a malfunction is first detected, it is temporarily stored in the ECU memory. If the same symptom is detected again during the second drive test, it causes the "CHECK" engine warning light 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.) In the Test Mode, the "CHECK" engine warning light lights up the 1st time a malfunction is detected.
5. After the diagnostic check, remove SST from the check connector.