TOYOTA MR2 OBD codes

 

Specification

Model Type

Engine Type

Model Year

Detection Mode

JAPAN

SW20

3S-GTE

10/1993 -

TEST

 

CODE

DIAGNOSIS

DETECTION

AREA

1

NORMAL

'Check Engine' warning light will flash continously.

NIL

13

RPM signal

[G1, G2, Ne]
When RPM signal (Ne) was other than 12 pulse during 2 pulse of G signals.

* Wirings and connectors (crank position signal systems)
* Crankshaft position sensor
* Camshaft position sensor
* ECU

21

O2 sensor signal

[Ox]
When the O2 sensor voltage crosses the 0.45V line and is leaning towards either 0.35V (lean) or 0.70V (rich) side for over 60 seconds while the speed is below 100km/h with the engine speed above 1500 rpm.

* O2 sensor
* Fuel system (injector, fuel pump)
* Ignition system (ignitor, plugs)
* Intake air system (turbo pressure sensor)
* ECU

22

Coolant temperature signal

[THW, E2]
Whenever a short circuit or a circuit detachment in the coolant temperature sensor is detected.

* Wirings and connectors (coolant temp systems)
* Coolant temp sensor
* ECU

24

Intake air temperature signal

[THA, E2]
Whenever a short circuit or a circuit detachment in the intake air temperature sensor is detected.

* Wirings and connectors (intake air systems)
* Intake air temp sensor
* ECU

25

Lean error

[Ox]
When no 'rich' signals were sent by the O2 sensor for over 90 seconds while the car is travelling at speeds under 100km/h with engine speed is above 1500 rpm with the coolant temprature above 70 centigrade.

* Wirings and connectors (O2 sensor)
* Fuel system (injector, fuel pressure)
* Air flow meter
* Coolant temp sensor

31

Turbo pressure sensor signal

[PIM, VC E2]
Whenever a short circuit or a circuit detachment in the turbo pressure sensor is detected.

* Wirings and connectors (turbo pressure sensor systems)
* Turbo pressure sensor
* ECU

41

Primary throttle position sensor

[VTA1, VC, IDL1, E2] Whenever a short circuit or a circuit detachment in the primary throttle position sensor is detected.

* Wirings and connectors (Primary throttle position systems)
* Primary throttle position sensor
* ECU

42

Speed sensor signal

[SPD]
When no speed signal to the ECU during test mode.

* Wirings and connectors (speed sensor systems)
* Speed sensor
* ECU

43

Starter signal

[STA]
When the no starter signals to the ECU during test mode.

* Wirings and connectors (starter signal systems)
* ECU

47

Secondary throttle position sensor

[VTA2, VC, IDL2, E2] Whenever a short circuit or a circuit detachment in the secondary throttle position sensor.

* Wirings and connectors (secondary throttle position systems)
* Secondary throttle position sensor
* ECU

51

Switch signal

[A/C, IDL]
When the air conditioning is on with T and E1 terminal of the service socket linked together whilst IDL contacts OFF.

* Throttle position sensor IDL
* Air conditioning switch
* Starter signal
* ECU