Tag obd 1

Toyota Starlet 1990-1996 OBD DIY Diagnostic Tutorial – No OBD Tool needed

Switch ignition OFF.
Bridge data link connector (DLC) terminals E1 and TE2 Fig. 2 . Switch ignition ON.
Ensure malfunction indicator lamp (MIL) flashes four times per second. Start engine.

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Toyota Starlet 1990-1996 OBD DIY Diagnostic Tutorial – No OBD Tool needed

GENERAL INFORMATION:

1.Trouble codes are displayed by the malfunction indicator lamp (MIL).
2.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

TOYOTA STarlet jumper wire

3.)If no trouble codes are stored, the lamp will flash twice per second Fig. 3 .

TOYOTA STarlet jumper wires setting obd 1 codes

4.)Each trouble code consists of two groups of one or more flashes Fig. 4 [A].

TOYOTA STarlet jumper wires setting obd 1 codes separate

5.)Warning lamp flash duration: 0,5 second Fig. 4 [B].

TOYOTA STarlet jumper wires setting obd 1 codes separate

6.)A 0,5 second pause separates each flash Fig. 4 [C].

TOYOTA STarlet jumper wires setting obd 1 codes separate

7.)A 1,5 second pause separates each trouble code group Fig. 4 [D].

TOYOTA STarlet jumper wires setting obd 1 codes separate

8.)A 2,5 second pause separates each trouble code Fig. 4 [E].

TOYOTA STarlet jumper wires setting obd 1 codes separate

9.)For example: Two 0,5 second flashes – 1,5 second pause – one 0,5 second flash.

10.)Trouble code 21 displayed Fig. 4 -oxygen sensor (O2S)/heated oxygen sensor (HO2S).

TOYOTA STarlet jumper wires setting obd 1 codes separate

11.)Trouble codes are repeated 4,5 seconds after last trouble code.

12.Count MIL flashes. Note trouble codes. Compare with trouble code table.

mil light obd 1

13.)Remove bridge wire.
14.)Switch ignition OFF.
15.)Rectify faults as necessary.

Test mode – DOHC

1.)Switch ignition OFF.
2.)Bridge data link connector (DLC) terminals E1 and TE2 Fig. 2 .

TOYOTA STarlet jumper wires setting

3.)Switch ignition ON.
4.)Ensure malfunction indicator lamp (MIL) flashes four times per second.
5.)Start engine.
6.)Drive vehicle at over 6 mph (10 km/h).
7.)Stop vehicle.
8.)Do not switch ignition OFF.
9.)With data link connector (DLC) terminals E1 and TE2 bridged, bridge terminals E1 and TE1 Fig. 2 .

TOYOTA STarlet jumper wires setting

10.)Count MIL flashes. Note trouble codes. Compare with trouble code table.

mil light obd 1

11.)Switch ignition OFF.
11.)Remove bridge wires.

12.Rectify faults as necessary.

NOTE: Codes 42 and 43 may be produced if this procedure is NOT carried out correctly. Code 51 will be produced during this procedure and can be ignored.

Erasing

NOTE: Fuse removal duration depends on ambient temperature. The lower the temperature the longer the fuse must be removed.

1.)Switch ignition OFF.
2.)Remove EFI fuse (15A) from underbonnet fusebox for 10 seconds minimum.
SOHC: Location Fig. 5 [1] & Fig. 5 [2].

TOYOTA STarlet jumper wire fuse location

DOHC: Location Fig. 6 [3] & Fig. 6 [4].

TOYOTA STarlet jumper wire fuse location FIG 6

3.)Refit fuse.

Trouble codes may also be erased by disconnecting battery leads.

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

Repeat checking procedure to ensure no data remains in ECM fault memory.

Flash type Fault location Probable cause
11111 No fault found
12 Crankshaft position (CKP) sensor/engine speed (RPM) sensor – no signal Wiring, CKP/RPM sensor, ignition amplifier, ECM
13 Crankshaft position (CKP) sensor/engine speed (RPM) sensor – no signal over 1500 rpm Wiring, CKP/RPM sensor, ECM
14 Ignition signal – no signal Wiring, ignition amplifier, ignition coil, ECM
21 2E-E: Oxygen sensor (O2S) Wiring, O2S, ECM
21 4E-FE: Heated oxygen sensor (HO2S) Wiring, HO2S, ECM
22 Engine coolant temperature (ECT) sensor – open/short circuit Wiring, ECT sensor, ECM
24 Intake air temperature (IAT) sensor – open/short circuit Wiring, IAT sensor, ECM
25 Weak mixture Wiring, injector, O2S/HO2S, ECM, fuel pressure, air leak, MAP sensor, ignition system
26 Rich mixture Wiring, injector, fuel pressure, MAP sensor, cold start injector, ECM
31 Manifold absolute pressure (MAP) sensor Wiring, MAP sensor, ECM
33 Idle air control (IAC) valve Wiring, IAC valve, ECM
41 Throttle position (TP) sensor Wiring, TP sensor, ECM
42 Vehicle speed sensor (VSS) Wiring, VSS, ECM
43 Starter signal Wiring, ignition switch, ECM
51 Switch signal – AC switch ON during diagnosis Wiring, AC switch, AC control module, ECM
51 Switch signal – PNP switch not in P or N during diagnosis Wiring, PNP switch, ECM
Switch signal – throttle position (TP) sensor, NO closed throttle signal during diagnosis Wiring, TP sensor, ECM

Isuzu Trooper 1992-1998 OBD 1 diy diagnostic procedure – No OBD tools

Diagnosed Isuzu trooper 1992-1998 OBD, even without OBD Diagnostic Scanner. Simple and Quick Tutorial.

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Isuzu Trooper 1992-1998 OBD 1 diy diagnostic procedure – No OBD tools

Accessing trouble codes

  • Trouble codes are displayed by the malfunction indicator lamp (MIL).
  • Ensure ignition switched OFF.
  • Bridge data link connector Fig. 1

isuzu obd 1 diy

 

  • Switch ignition ON.
  • Check that MIL flashes.

mil light obd 1

  • Count MIL flashes. Note trouble codes. Compare with trouble code table.
  • Each trouble code consists of two groups of one or more flashes.
  • The first group of flashes indicates the ‘tens’ of the trouble code Fig. 2 C.

isuzu obd 1 diy tutorial

  •  The second group of flashes indicates the ‘ones’ of the trouble code Fig. 2 D.

isuzu obd 1 diy tutorial

  • A short pause separates each trouble code group Fig. 2 E .

isuzu obd 1 diy tutorial

  • A long pause separates each trouble code Fig. 2 F.

isuzu obd 1 diy tutorial

  • For example: Trouble code 12 displayed Fig. 2  .

isuzu obd 1 diy tutorial

  • Each trouble code including 12 is displayed three times.
  • Switch ignition OFF.
  • Remove bridge wire.

 

Erasing trouble codes

  • Ensure ignition switched OFF.
  • Disconnect battery earth lead for 30 seconds minimum.

 

NOTE: Disconnecting battery may erase memory from electronic units (e.g. radio).

 

Trouble code identification

 

 

Trouble code

 

Fault location

 

12

 

Start and end of diagnosis

 

13

 

Heated oxygen sensor (HO2S)

 

14

 

Engine coolant temperature (ECT) sensor

 

21

 

Throttle position (TP) sensor

 

23

 

Intake air temperature (IAT) sensor

 

24

 

Vehicle speed sensor (VSS)

 

32

 

Exhaust gas recirculation (EGR) solenoid

 

33

 

Manifold absolute pressure (MAP) sensor

 

42

 

Electronic spark timing system

 

44

 

Heated oxygen sensor (HO2S) – weak mixture

 

45

 

Heated oxygen sensor (HO2S) – rich mixture

 

51

 

Engine control module (ECM)