Diagnostic plug ??

[Doddy]

Do all of the injection vauxhall engines have diagnostic plug ?? i`ve got a 20XE and it does not seem to have one, i`ve been told it is a blue 10 pin plug effort, is this so??

it`s a really eary red top, also can`t find the wire for the engine warning light for dash??

[Stuart]

pin 30 i think

BEng (hons) just isnt enough, i need a Msc too!

[Dicko]

it might not but u can fit 1 urself, 3 wires off the ecu loom, brown yellow/brown white i think

[Ste_Nova]

ecu light brown/blue will be by the brake servo

ecu diag brown/white and brown/yellow will be by the ecu connector

above is for astra engine

[barnes]

my 16v engine didnt have a diagnostics plug either. mine was from an e reg astra gte 16v, and yes they did make em on e reg's.

[Ste_Nova]

it may not have had the plug but the wires would have been there

[Anonymous]

Heres a list of the pins and waht they do, ecu light is 22 on this one.

Its off a later ecu but i am led to believe that the earlier ones are the same for most of them and then just some of the pins arent relevant.




> 1: Coil Negative
> 2: Earth
> 3: Relay Earth
> 4: ISCV (Idle Speed Control Valve)
> 5: CFSV (Carbon Filter Solenoid Valve)
> 6: 4WD Unit, Auto Trans control unit
> 7: AFS (airflow sensor) signal
>
> 9: Road speed sensor
> 10: OS (oxygen sensor) return (lambda probe)
>
> 12: AFS supply
> 12: TPS (throttle position sensor) supply
> 13: Serial Diagnostic socket
> 14: Earth
>
> 16: Injector pulse - bank 1
> 17: Injector pulse - bank 2
> 18: Battery +ve
> 19: Earth (main ECM/ECU earth)
> 20: Coding earth (non-cat)
> 21: Coding earth (cat)
> 22: ECU Warning Lamp
>
> 24: Earth
> 25: AFS/ATS/CO Sensor return
> 26: CTS/TPS/OA Sensor return
> 27: Ignition Switch
> 28: Oxygen sensor
>
>
>
> 32: On board computer
>
> 34: Auto trans control unit
>
> 36: Relay Earth
> 37: NBV supply from relay
>
>
> 40: AC Cut-off switch
> 41: AC pressure switch
> 42: Ignition Switch
> 42: Coding Earth (MT)
> 43: CO - non cat (AFS)
> 44: ATS (AFS)
> 45: CTS supply/signal
> 46: Octane adjuster
> 47: Earth (4x4)
> 48: CAS Return
> 49: CAS Output
>
> 51: AT control unit
>
> 53: Throttle pot signal
>
> 55: Diagnostic Socket

[barnes]

chip, ur still me hero, even on novaload, lol