Toyota Toyota 92-95 Pickup or 4Runner 3.0L or 93-94 T100 3.0L Trouble Code Info

Toyota

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
  • 4Runner/Pickup – jump DLC terminals TE1 and E1 with a short lead 1
  • T100 Pickup – jump DLC terminals TE1 and E1 with a short lead 2
  • 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
Self-Diagnosis – Test Mode
  • Carry out preparatory conditions
  • 4Runner/Pickup – jump DLC terminals TE2 and E1 with a short lead 1
  • T100 Pickup – jump DLC terminals TE2 and E1 with a short lead 2
  • 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 or 2
  • Count MIL flashes and compare with trouble code table below
  • Switch ignition OFF
  • Remove jump leads
pickup 4runner 92-95 checking codes 1 T100 93-94 checking codes 1

Clearing Trouble Codes

  • Ensure ignition switched OFF
  • Corolla – remove EFI fuse (15A) from underhood fusebox¬†5
  • Celica – remove EFI fuse (15A) from underhood fusebox 6
  • Wait 30 seconds
  • Reinstall fuse
  • Repeat accessing procedure to ensure no data remains in ECM fault memory
pickup 4runner 92-95 erasing codes T100 93-94 erasing codes

 Trouble Codes

 
92-95 4Runner 3.0L Engine Code: 3VZ-E
92-95 Pickup 3.0L Engine Code: 3VZ-E
93-94 T100 Pickup 3.0L Engine Code: 3VZ-E
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)-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, ECT/VAF sensor, intake/fuel/ignition system, ECM
26 Mixture control -continuously rich Wiring, injector, fuel system, cold start injector, H02S, ECT/VAF sensor, ECM
27 Heated oxygen sensor (H02S) -rear-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
35 Barometric pressure (BARO) sensor-circuit 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 -park/neutral position (PNP) switch not in P or N during diagnosis Wiring, PNP switch, ECM
52 Knock sensor (KS) -circuit Wiring, KS, ECM
53 Knock control -malfunction ECM
71 Exhaust gas recirculation (EGR) system malfunction Hose leak/blockage, wiring, EGRT sensor, EGR solenoid, ECM