Page text (OCR transcript)
EG–538
ENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING
3 Check for open and short in harness and connector between engine
control module and main heated oxygen sensor, engine control module
and data link connector 1 (See page IN–30).
OK NG Repair or replace harness or connector.
4 Check each item found to be a possible cause of problem.
Check each circuit found to be a possible cause of trouble according to the results of the check in 1
or 2 . The numbers int he table below show the order in which the checks should be done.
Main heater oxygen sensor signal
continues at 0 V Possible Cause See page
1 Faulty sensor installation –
2 Air leakage EG–261
3 Misfire IG–21
4 Fuel system EG–568
5 Injector circuit EG–583
6 Characteristics deviation
in engine coolant temp. sensor EG–530
7 Characteristics deviation
in intake air temp. sensor EG–532
8 Characteristics deviation in mass
air flow meter EG–544
9 Valve timing EG–33
OK NG Repair or replace.
5 Check compression (See page EG–9).
OK NG Repair or replace.
6 Does malfunction disappear when a good main heated oxygen sensor is
installed?
NG YES Replace main heated oxygen sensor.
Check and replace engine control module.