Preparatory Conditions
- Battery voltage 11 Volt minimum
- Closed throttle position (CTP) switch full closed
- Transmission in neutral position
- All auxiliary equipment, including air conditioning, switched OFF
- Engine at normal operating temperature
Accessing Trouble Codes
Self-Diagnosis – Normal Mode- Switch ignition ON. Do NOT start engine.
- Check MIL illuminates
- Switch ignition OFF
- Jump DLC terminals TE1 and E1 with a short lead 1
- Switch ignition ON
- Count MIL flashes and compare with trouble code table below
- First flashes of .5 second duration indicate ‘tens’, after a 1.5 second pause, next flashes of .5 second duration indicate ‘units’
- A 2.5 second pause occurs between codes
- After a 4.5 second pause, trouble codes will be repeated
- Switch ignition OFF
- Remove jump lead
- Carry out preparatory conditions
- Jump DLC terminals TE2 and E1 with a short lead 1
- Switch ignition ON. Do NOT start engine
- Check MIL is flashing to confirm test mode is operating
- NOTE: Test mode will not be activated if the DLC terminals are connected after the ignition switch is turned ON.
- Start the engine
- Drive vehicle over 10 mph to simulate possible fault conditions
- Stop vehicle
- Jump DLC terminals TE1 and E1 with a short lead 1
- Count MIL flashes and compare with trouble code table below
- Switch ignition OFF
- Remove jump leads
Clearing Trouble Codes
- Ensure ignition switched OFF
- Remove EFI fuse (15A) from underhood fusebox
- Wait 30 seconds
- Reinstall fuse
- Repeat accessing procedure to ensure no data remains in ECM fault memory
Trouble Codes
| 92-93 Camry 3.0L Engine Code: 3VZ-FE | ||
|---|---|---|
| 92-93 Camry Wagon 3.0L Engine Code: 3VZ-FE | ||
| Trouble code | Fault location | Probable cause |
| 12 | Engine speed (RPM) sensor circuit | Wiring, RPM sensor, ECM |
| 13 | Engine speed (RPM) sensor -above 1000 rpm | Wiring, RPM sensor, ECM |
| 14 | Ignition reference signal -no signal | Wiring, ignition module, ECM |
| 16 | Transmission control signal -malfunction | ECM |
| 21 | Heated oxygen sensor (H02S) -LH front -circuit | Wiring, H02S, ECM |
| 22 | Engine coolant temperature (ECT) sensor circuit | Wiring, ECT sensor, ECM |
| 24 | lntake air temperature (lAT) sensor-circuit | Wiring, lAT sensor, ECM |
| 25 | Mixture control -continuously lean | Wiring, injector, H02S, ECTNAF sensor, intake/fuel/ignition system, ECM |
| 26 | Mixture control -continuously rich | Wiring, injector, fuel system, cold start injector, H02S, ECTNAF sensor, ECM |
| 27 | Heated oxygen sensor (H02S) rear circuit | Wiring, H02S, ECM |
| 28 | Heated oxygen sensor (H02S) -RH front -circuit | Wiring, H02S, ECM |
| 31 | Volume air flow (VAF) sensor-circuit | Wiring, VAF sensor, ECM |
| 32 | Volume air flow (VAF) sensor-circuit | Wiring, VAF sensor, ECM |
| 41 | Throttle position (TP) sensor-circuit | Wiring, TP sensor, ECM |
| 42 | Vehicle speed sensor (VSS) -circuit | Wiring, VSS, ECM |
| 43 | Starter signal -circuit | Wiring, ignition switch, engine control relay, ECM |
| 51 | Switch signal -A/C switch ON during diagnosis | Wiring, A/C switch, A/C amplifier, ECM |
| 51 | Switch signal -closed throttle position (CTP) switch OFF during diagnosis | Wiring, CTP switch, ECM |
| 51 | Switch signal -parklneutral position (PNP) switch not in P or N during diagnosis | Wiring, PNP switch, ECM |
| 52 | Knock sensor (KS) LH -circuit | Wiring, KS, ECM |
| 53 | Knock control -malfunction | ECM |
| 55 | Knock sensor (KS) RH -circuit | Wiring, KS, ECM |
| 71 | Exhaust gas recirculation (EGR) system -malfunction | Hose leak/blockage, wiring, EGRT sensor, EGR so/enoid, ECM |
92 Camry 3vzfe V6 3.0 liquid gas coming out tail pipe changed injectors plugs wires cap n rotor runs great except the big plume of gas smoke and pulled plugs 3 out of six wet brand new, makes no sense except ECU bad maybe? please help
Hey there. So I try to rule out everything before condemning an ECU. There is a fuel pressure up vacuum switching valve that energizes and raises fuel pressure on ECU command. Might try checking your fuel pressure for any abnormalities. So,…is there any sulfur type odor as well?