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 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
- 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 |
Hello im looking for Toyota Corona 7afe 1.8 AT211 trouble codes
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What does code 33 on a 1999 toyota corolla ae110 sprinter mean? It’s not in the list and mine displays it?
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I am looking specific for the list of codes for a 93 Corolla 1.8 liter engine. You have a 1.6 listed and the celica’s listed but not the 1.8. Is the list for the Celicas and the 1.6 liter Corolla applicable for the 1.8 liter?