TGE/Troubleshooting 2JZ-GE — Inspection Procedure (Only for California specification vehicles), page 42

EG–422

ENGINE – 2JZ-GE ENGINE TROUBLESHOOTING

INSPECTION PROCEDURE (Only for California specification vehicles)

HINT: If diagnostic trouble code "21" is output, check the main heated oxygen sensor (Fr) circuit.
        If diagnostic trouble code "28" is output, check the main heated oxygen sensor (Rr) circuit.

1  Check voltage between terminals HT1, HT2 of engine control module connector and body ground.

ON

SST
ECM

B 73, 72

HT1  HT2

BE6653
FI6890

P  Connect SST (check harness "A").
     See page EG–404)
     SST 09990–01000

C  Measure voltage between terminals HT1, HT2 of engine control module connector and body ground.

OK  Voltage:  9 — 14 V

NG                                    OK  Go to step  3  .

2  Check main heated oxygen sensor heater.

P11484

2
1

P  Disconnect main heated oxygen sensor connector.

C  Measure resistance between terminals 1 and 2 of main heated oxygen sensor connector.

OK  Resistance:   11 — 16 Ω at 20˚C (68˚F)

OK                                    NG  Replace main heated oxygen sensor.

Check and repair harness or connector between main relay and main heated oxygen sensor, main heated oxygen sensor and engine control module.