How do you pull the codes for a 91 Toyota Pickup. Check engine lite is on.

I find this procedure, test it for retrieving trouble
codes...

RETRIEVING CODES
1 . Before
retrieving codes, verify CHECK ENGINE light comes on with ignition on
and engine off. The CHECK ENGINE light should go off when engine is
started. If light remains on, system has detected a malfunction or
abnormality.
2 . Ensure battery voltage is greater than
11 volts and charging system is okay. Engine should be at normal
operating temperature.
3 . Apply parking brake. Shift transaxle
to Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Close
throttle valve.
4 . Turn ignition on with engine off. Install
jumper wire between terminals TE1 (or T) and E1 in engine check
connector. (Location of DLC might differ from diagram as it is only for
illustration purposes).



5 . Count number of flashes from CHECK ENGINE light. If system is
operating properly (with no codes), CHECK ENGINE light will flash
continuously and evenly.



NOTE: If CHECK ENGINE light will not flash diagnostic codes, see
appropriate DIAGNOSTIC CIRCUIT CHECK.

6 . If code exists, digits
of each code will flash at 1/2 - second intervals, with a 1 1/2 - second
pause between first and second digits.
7 . If more than one code
is stored, a 2 1/2 - second pause will occur before next code is
flashed. Once all codes are displayed, a 4 1/2 - second pause will occur
then code(s) will be repeated.
8 . Codes are displayed
from the smallest to largest code. After codes are retrieved, remove
jumper wire to exit diagnostic mode.

Ignition coils and ignitors
do fail now and then resulting in no sparks. Perform a spark test to
confirm if sparks are available and bright blue and not dull orange.


Tell us news (remember comment and rated this post).


I find this procedure, test it for retrieving trouble codes...

RETRIEVING CODES
1 . Before retrieving codes, verify CHECK ENGINE light comes on with ignition on and engine off. The CHECK ENGINE light should go off when engine is started. If light remains on, system has detected a malfunction or abnormality.
2 . Ensure battery voltage is greater than 11 volts and charging system is okay. Engine should be at normal operating temperature.
3 . Apply parking brake. Shift transaxle to Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Close throttle valve.
4 . Turn ignition on with engine off. Install jumper wire between terminals TE1 (or T) and E1 in engine check connector. (Location of DLC might differ from diagram as it is only for illustration purposes).



5 . Count number of flashes from CHECK ENGINE light. If system is operating properly (with no codes), CHECK ENGINE light will flash continuously and evenly.



NOTE: If CHECK ENGINE light will not flash diagnostic codes, see appropriate DIAGNOSTIC CIRCUIT CHECK.

6 . If code exists, digits of each code will flash at 1/2 - second intervals, with a 1 1/2 - second pause between first and second digits.
7 . If more than one code is stored, a 2 1/2 - second pause will occur before next code is flashed. Once all codes are displayed, a 4 1/2 - second pause will occur then code(s) will be repeated.
8 . Codes are displayed from the smallest to largest code. After codes are retrieved, remove jumper wire to exit diagnostic mode.

Ignition coils and ignitors do fail now and then resulting in no sparks. Perform a spark test to confirm if sparks are available and bright blue and not dull orange.


Tell us news (remember comment and rated this post).