TGTE/Troubleshooting 2JZ-GTE — Check each item found to be a possible cause of problem., page 53

EG-539

ENGINE – 2JZ-GTE ENGINE TROUBLESHOOTING

7  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 . The numbers int he table below show the order in which the checks should be done.

Main heater oxygen sensor signal
continues at 5.0 V | Main heater oxygen sensor
signal is normal | Possible Cause | See page

2 | 7 | Injector circuit | EG-583
  | 3 | Misfire | IG-21
6 | 4 | Valve timing | EG-33
  | 1 | Air leakage | EG-261
1 | 2 | Fuel system | EG-568
5 | 8 | Characteristics deviation in mass
air flow meter | EG-544
3 | 5 | Characteristics deviation
in engine coolant temp. sensor | EG-530
4 | 6 | Characteristics deviation
in intake air temp. sensor | EG-532

OK                          NG  Repair or replace.

8  Check compression (See page EG-9).

OK                          NG  Repair or replace.

9  Does malfunction disappear when a good main heated oxygen sensor is
installed?

NG                          YES  Repair main heated oxygen sensor.

Check and replace engine control module.