Engine Diagnostic Check Procedure

[lobotomy]

When your engine management light comes on it means something is wrong. Ok so now you need to go out to your car and;

• Go into the engine bay and open the fuse/diagnostic box (little black box on the left-hand side of the engine bay) And the underside of the lid will show you the pin layout.
  
• Bridge pins TE1 and E1 (with a paper clip or bit of wire)
  
• Turn ignition on (but don't actually start the car)
  
• The engine management light will start to flash
  
• It will flash say 4 times **** then a short pause
  
• It will then flash say once *
  
• This means error code 41 ie. Idle speed prob
  
• The management light will then start flashing another error code (they may be more than one fault) or have a short pause and repeat the same code over again
  
• Then refer to the list above or the diagram below to see what the error is
  

[SiCaln]

Just found this on another site, thought it may be of some use:

Code | Signal Diagnosis and Common Trouble Area

1 System OK

2 MAP Sensor or Circuit

3 Ignition Signal from Amplifier

4 CTS/Circuit

6 RPM Signal or Circuit

7 Throttle Position Sensor (TPS) or Circuit

8 ATS/Circuit

9 Vehicle Speed Sensor/Circuit

10 Cranking Signal or Circuit

11 A/C Switch or Circuit

12 RPM Signal

No G or NE signal present for 2 seconds during cranking

Open G circuit

Open, short in G or NE circuit.

Distributor

ECU

13 RPM signal

No NE signal for 50msec at 1000rpm.

Open G circuit

Open, short in G or NE circuit.

Distributor

ECU

14 Ignition No IGF signal to ECU for 4 consecutive IGT signal during engine running

Open/short in IGF/IGT signal from Igniter to ECU

Igniter malfunction

ECU

15 Starter Signal Circuit

Coil pack wires

16 ECT Control Signal or Circuit

21 O2 sensor Open/short in heater circuit of Oxygen (O2) sensor for 0.5 seconds

Amplitude of O2 sensor reduced to 0.35-0.70V continuously for more than 60 seconds

O2 sensor

Vacuum sensor

ECU

22 Water Temperature Sensor no signal at THW

Water temperature sensor

ECU

24 Intake Air Temp sensor no signal at THA

Intake air temp sensor

ECU

25 Air/Fuel mixture Lean Oxygen (O2) sensor output in less than 0.45 volts for at least 90 seconds when O2 sensor is warmed and 1500 rpm or above.

Open injector circuit

Lack of fuel pressure

Ignition system

Vacuum sensor

O2 sensor

ECU

26 Oxygen (O2) Sensor Rich Signal or Circuit

27 Oxygen (O2) Sensor/Circuit

28 Oxygen (O2) Sensor/Circuit

31 Vacuum Sensor

No signal at Vacuum sensor (PIM)

Vacuum sensor to ECU

32 Vane Airflow Sensor or Circuit

33 ISCV (Idle speed control valve)

Open or short in ISCV circuit

ISCV Valve

34 Turbo Pressure Signal or Circuit

35 Turbo Pressure Signal or Circuit

41 Throttle Position Sensor (TPS)

No signal for 0.5 seconds or more at ignition ON. (VTA)

ECU

42 Vehicle Speed Sensor (VSS)

No speed sensor signal to ECU when loaded driving condition with engine speeds 2000 to 5000 rpm.

For 8 seconds or more.

ECU

43 Starter No starter signal to ECU when cranking in TEST mode.

Terminal STA on ECU

Starter signal circuit

Starter relay

Ignition switch

47 Throttle Position Sensor (TPS) or Circuit

51 Switch Condition Signal displayed when A/C is on when TE1 and E1 connected in test mode

A/C switch

Accelerator pedal, cable

ECU

52 #1 Knock Sensor

No KNK1 signal to ECU

Knock sensor loose

Malfunctioning knock sensor

53 #2 Knock Sensor

No KNK2 signal to ECU

Knock sensor loose

Malfunctioning Knock Sensor

54 Turbo Intercooler Signal or Circuit

55 Knock Sensor or Circuit