Toyota Celica (1994), Celica (1995), Corolla (1993), Corolla (1994), Corolla (1995) Trouble Code list

Toyota Toyota Celica 94-95 & Corolla 93-95 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

Corolla – jump DLC terminals TE1 and E1 with a short lead 1

Celica – 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 seco nd 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

Corolla – jump DLC terminals TE2 and E1 with a short lead 1

Celica – 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

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

Trouble Codes

94-95 Celica 1.8L Engine Code: 7A-FE

94-95 Celica 2.2L Engine Code: 5S-FE

93-95 Corolla 1.6L Engine Code: 4A-FE

93-95 Celica 1.8L Engine Code: 7A-FE

Trouble code Fault location Probable cause

12 Engine speed (RPM) sensor -circuit Wiring, RPM sensor, ECM

13 Engine speed (RPM) sensor -above 1500 rpm Wiring, RPM sensor, ECM

14 Ignition reference signal -no signal Wiring, ignition module, ECM

16 Transmission control signal -malfunction EGM

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, intake/fuel ignition system, valve timing, ECM

26 Mixture control -continuously rich Wiring, injector, intake/fuel system, valve timing, ECM

27 Heated oxygen sensor (H02S)-rear-circuit Wiring, H02S, ECM

31 Manifold absolute pressure (MAP) sensor -circuit Wiring, MAP sensor, ECM

41 Throttle position (TP) sensor -circuit Wiring, TP sensor, ECM

42 Vehicle speed sensor (VSS) -circuit Wiring, VSS, instrument c/uster, 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/neutra! position (PNP) switch not in P or N during diagnosis Wiring, PNP switch, ECM

52 Knock sensor (KS) -circuit Wiring, KS, ECM

71 Exhaust gas recirculation (EGR) system malfunction Hose leak/blockage, wiring, EGRT sensor, EGR solenoid, ECM