Ridgey

iTrader: (5)

Wondering if there is any ecu monitoring equipment out there for testing L6 2wd ecu's and the associated sensors around the car.
As far as i am aware all the secs, collins, IAW etc are for L8.

Been having top end running issues (hesitation) , changed loads of old sensors, leads, plugs etc, now would like to look into diagnostics testing.

cheers
Dave

Graceland

Secs monitor will work on L1, L6, L8 and P8

Shings

if u r having top end misfire issues thats when the engine is most under load- I imagine if you continue without getting an expert to look at it you're likely to cause some damage..

I'd get a proffesional to look at it myself.

Jake

Ridgey

iTrader: (5)

Shings
your probably right, but you hear of people taking cars for diagnostic checks to 'experts', replacing parts and paying very high labours rates, only to find out the problems is still there.
BVack to sqaure one.

Shings

I know what your saying

BUT

Theres plenty of highly recommended experts on here who own the sophisticated equipement you're after and more... so why not pay them to get your car fixed for you.

I bet they'll be able to sort it with less agro and less chance of somet engine wise going pop.

Motorsports developments is a good port of call for your neck of the woods...

the beauty of Passionford is that the idiots tend to get weeded out- means people dont get ripped off quite as much/often.

Jake

bud-weis

This may or may not help

Originally written/posted by Simon @ SECS.


BASIC FAULT FINDING GUIDE FOR COSSIE ECUS

NOTE: Some of these results can be affected by an alarm system or immobilizer. I have assumed the car has a 2.5 bar/3.0 bar map sensor.
If SECS monitor is fitted, unplug it! (A faulty monitor or incorrectly fitted can cause engine not to run)

1) Ensure ignition is OFF.
2) Remove rear of ecu plug cover and insert plug back into ecu.
3) Turn ignition back on (do not start engine)
4) MAIN POWER CHECK: Check for DC voltage of at least 11.5V between ecu pins 19 and 20.
5) REFERENCE CHECK: Check for DC voltage of around 4.8 to 5.2V between pins 11 and 30.
6) MAP SENSOR CHECK: Check for DC voltage of approx 1.8 to 2.5V between pins 11 and 15.
7) THROTTLE CLOSED:
4x4: Check for DC voltage less than 0.5V between pins 11 and 17.
2WD: Check for DC voltage greater than 4.5V between pins 11 and 17.
8) THROTTLE FULLY OPEN:
4x4: Check for DC voltage greater than 4.5V between pins 11 and 17.
2WD: check for DC voltage less than 0.5V between pins 11 and 17.
9) Turn ignition off, unplug ecu, turn ignition back on (don’t forget immobilizer if fitted)
10) CRANK SENSOR: Check resistance between pins 3 and 4 between 300 and 1200 ohms.
11) CRANK SENSOR: Check AC voltage on pins 3 and 4 while cranking engine - should be at
least 2V.
11) PHASE SENSOR: Check resistance between pins 5 and 23 between 300 and 1200 ohms.
12) PHASE SENSOR: Check AC voltage on pins 5 and 23 while cranking engine - should be at
least 1.5 - 2V.
12) INJECTOR: Check resistance from pins 18 to 20 should be 2 to 5 ohms.
13) INJECTOR: Check resistance from pins 35 to 20 should be 2 to 5 ohms.
14) INJECTOR: Check resistance from pins 33 to 20 should be 2 to 5 ohms.
15) INJECTOR: Check resistance from pins 32 to 20 should be 2 to 5 ohms.
NOTE: INJECTOR TESTS MAY NEED MAIN RELAY ENERGISED ON L1 and L6 ecus (link pins 1 and 10 first)
16) IGNITION TRIGGER: Read voltage between pins 24 and 25, should be at least 4.5V.
17) IGNITION TEST: BEWARE DANGEROUS VOLTAGES ON PLUG/COIL LEADS.
Quickly link pins 24 and 25 on and off this will FIRE the ignition coil. Rotate dizzy by moving car in gear to point rotor arm at one plug lead and remove spark plug (earthing it on chassis or engine) to see spark. Try for each plug in turn. Or remove king lead at dizzy and place end within 1 centimetre of earth to see a big spark.
18) Place a temporary wire link from pin 1 to pin 10 (energises ecu power relay) - you should hear a click.
19) Quickly link pins 19 to 28 to test fuel pump runs.
20) COOLANT TEMP: Check resistance pins 29 and 11 for 800 ohms to 5000 ohms (depends on temp)
21) CHARGE TEMP: Check resistance pins 31 and 11 for 800 ohms to 5000 ohms (depends on temp)

Unplug the ecu and turn the ignition on. If the fuel pump runs the relay has been wired to run permanently or the relay is jammed.
However, if the pump is running continuously, this WILL NOT stop the car from starting.

Some chips don’t drive the fuel pump relay output properly as this is used for other features like ALS etc.... (PECTEL/AHMED chips mainly). In these situations, the pump is rewired to run continuously.

If however, the pump is wired correctly and working properly, if it runs continuously when the ecu is plugged in only, then the ECU and/or chip may have failed.

The pump is ok to run continuously.

Ridgey

iTrader: (5)

thanks bud
will check most of those