EG–433 ENGINE – 2JZ-GE 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 in the table below show the order in which the checks should be done. (Main heated*) oxygen sensor signal from either side continues at 5.0 V (Main heated*) oxygen sensor signal from both sides continues at 5.0 V (Main heated*) oxygen sensor signals from both sides are normal Possible Cause See page 1 7 Injector circuit EG–4 3 Misfire IG–4 2 4 Valve timing EG–33 1 Air leakage EG–19 1 2 Fuel system EG–457 4 8 Characteristics deviation in volume air flow meter EG–438 2 5 Characteristics deviation engine coolant temp. sensor EG–424 3 6 Characteristics deviation in intake air temp. sensor EG–426 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 Replace (main heated*) oxygen sensor. Check and replace engine control module. *: Only for California specification vehicles