Mazda 626 1989 Workshop Manual page 266

Number: 054/89
4. Electrical (all problems)
If vehicle is a 1988 or 1989, use EC-AT tester as per Workshop Manual.
If vehicle is a 1987 model, check the electrical system harness as follows:
A. Check if the EGI harness is properly grounded
at the B32 connector.
If the terminal is rusted or the bolt is loose, repair
it and apply a suitable anti-rust agent.
Then, go to step B.
B. Connect an EC-AT tester as per the 1987 626
Workshop Manual. (See page 7B-6)
C. Turn the ignition switch " O N " .
D . Check if the throttle sensor voltage is within the
follow ing specification and is stabilized (not
fluctuating).
Specification:
Throttle Closed: 0.4 - 0 .6 Volts
Throttle Fully Opened: 4 .0 Volts Approximately
If the reading is out o f the specified range, adjust
the throttle sensor setting as per the workshop manual
(page 4A -17).
If the throttle sensor voltage fluctuates, go to step F.
E. Start the engine.
If any inspection code is shown on the EC-AT Tester,
perform the necessary repair as per the workshop
manual.
Check the idle switch adjustment.
Idle switch input indicator should be on at idle and
should be off when the accelerator pedal is depressed.
If not, check or adjust the idle switch as per the
workshop manual.
Check the throttle sensor voltage.
If the throttle sensor voltage fluctuates, go to step F.
Date Issued: 4/5/89
Date Revised:
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