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Toyota Startlet 1996-1999 Obd1-Diy Diagnostic Tutorial

toyota startlet obd 1 codes diagnostic guide

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Toyota Startlet 1996-1999 Obd1-Diy Diagnostic Tutorial

 

General information
Trouble codes are displayed by the malfunction indicator lamp (MIL).
Late models: The ECM fault memory can also be checked using diagnostic equipment connected to the data link connector (DLC).

Accessing

Normal mode
1 Switch ignition ON.
2 Bridge data link connector (DLC) terminals E1 and TE1. SOHC: Fig. 1 . DOHC: Fig. 2 . If no trouble codes are stored, the lamp will flash twice per second Fig. 3 .
3 Each trouble code consists of two groups of one or more flashes Fig. 4 [A]. Warning lamp flash duration: 0,5 second Fig. 4 [B].
4 A 0,5 second pause separates each flash Fig. 4 [C].
5 A 1,5 second pause separates each trouble code group Fig. 4 [D]. A 2,5 second pause separates each trouble code Fig. 4 [E].
6 For example: Two 0,5 second flashes – 1,5 second pause – one 0,5 second flash. Trouble code 21 displayed Fig. 4 – oxygen sensor (O2S)/heated oxygen sensor (HO2S).
7 Trouble codes are repeated 4,5 seconds after last trouble code.
9 Count MIL flashes. Note trouble codes. Compare with trouble code table. Remove bridge wire.
10 Switch ignition OFF. Rectify faults as necessary.

Test mode – DOHC
1 Switch ignition OFF.
2 Bridge data link connector (DLC) terminals E1 and TE2 Fig. 2 . Switch ignition ON.
3 Ensure malfunction indicator lamp (MIL) flashes four times per second. Start engine.
4 Drive vehicle at over 6 mph (10 km/h). Stop vehicle. Do not switch ignition OFF.
5 With data link connector (DLC) terminals E1 and TE2 bridged, bridge terminals E1 and TE1 Fig. 2 . Count MIL flashes. Note trouble codes. Compare with trouble code table.
6 Switch ignition OFF. Remove bridge wires. Rectify faults as necessary.

toyota startlet obd 1 codes diagnostic guide

toyota startlet obd 1 codes

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Preparatory conditions

Connect LED tester between engine control module (ECM) terminal 2 and battery (12 volt) positive Fig. 1 .

Accessing trouble codes

  1. Ensure ignition switched OFF.
  2. Bridge data link connector (DLC) terminal 10 and earth with a switched lead – contacts normally open Fig. 2 .
  3. Switch ignition ON.
  4. Operate switch for 2,5 seconds.
  5. Count LED flashes. Note trouble codes.
  6. Each trouble code consists of four groups of one or more short flashes Fig. 3 .
  7. A long pause separates each trouble code.
  8. For example: Trouble code 1233 displayed Fig. 3 .
  9. Engine control module (ECM). First trouble code will be repeated until switch operated again for 2,5 seconds Fig. 2 .
  10. Repeat operation. Note trouble codes.
  11. Compare with trouble code table.
  12. Rectify faults as necessary.
  13. Trouble code 3333 displayed indicates end of trouble code output.

Erasing trouble codes

Ensure ignition switched OFF. Disconnect battery earth lead. Wait 15 seconds.
Reconnect battery earth lead.

WARNING: Disconnecting the battery may erase memory from electronic units (e.g. radio, clock).

 

BELOW ARE LIST OF TROUBLE CODE.

Trouble code Fault location Probable cause
1122 Engine control module (ECM) – malfunction ECM
1233 Engine control module (ECM) – malfunction ECM
1234 Engine control module (ECM) – malfunction ECM
2121 Turbocharger (TC) wastegate regulating valve – malfunction Wiring, TC wastegate regulating valve, mechanical fault
3112 Injector 1 – circuit malfunction Wiring, injector
3114 Idle air control (IAC) valve – circuit malfunction Wiring, IAC valve, ECM
3116 Injector 3 – circuit malfunction Wiring, injector
3117 Mass air flow (MAF) sensor – circuit malfunction Wiring, MAF sensor, ECM
3121 Turbocharger (TC) wastegate regulating valve – malfunction Wiring, TC wastegate regulating valve, mechanical fault
3122 Idle air control (IAC) valve – circuit malfunction Wiring, IAC valve, ECM
3128 Heated oxygen sensor (HO2S) – circuit malfunction Wiring, HO2S, ECM
3135 Evaporative emission (EVAP) canister purge valve – circuit malfunction Wiring, EVAP valve, ECM
3137 Engine control module (ECM) – power supply low Wiring, fuses, battery, alternator
3145 Engine coolant temperature (ECT) sensor – circuit malfunction Wiring, ECT sensor, ECM
3149 AC compressor – malfunction Wiring, AC compressor, mechanical fault
3152 Turbocharger (TC) wastegate regulating valve – high boost Wiring, TC wastegate regulating valve, vacuum pipes
3153 Throttle position (TP) sensor – circuit malfunction Wiring, TP sensor, ECM
3155 Vehicle speed sensor (VSS) – circuit malfunction Wiring, VSS, ECM
3211 Knock sensor (KS) – circuit malfunction Wiring, KS, ECM
3222 Camshaft position (CMP) sensor – circuit malfunction Wiring, CMP sensor, ECM
3224 Engine control module (ECM)/knock sensor (KS) – malfunction ECM
3232 Crankshaft position (CKP) sensor/engine speed (RPM) sensor -circuit malfunction Wiring, CKP/RPM sensor, ECM
3233 Engine control module (ECM)/knock sensor (KS) – malfunction ECM
3234 Injector 2 – circuit malfunction Wiring, injector
3235 Injector 4 – circuit malfunction Wiring, injector
3241 Engine control module (ECM) – malfunction ECM
3242 Engine control module (ECM) – malfunction ECM
3333 End of output
4151 Air/fuel control – malfunction Wiring, HO2S, fuel system, fuel pressure, mechanical fault, ECM
4152 Air/fuel control – malfunction Wiring, HO2S, fuel system, fuel pressure, mechanical fault, ECM
4153 Air/fuel control – malfunction Wiring, HO2S, fuel system, fuel pressure, mechanical fault, ECM
4154 Air/fuel control – malfunction Wiring, HO2S, fuel system, fuel pressure, mechanical fault, ECM
4155 Engine control module (ECM) – malfunction ECM
4156 Turbocharger (TC) wastegate regulating valve – malfunction mechanical fault
4444 No fault found