High beams issue!

Mike.

We are using MITCHELL1. Generally percieved to be the best on the market ! Of course nothing is infallable. And ours coud be wrong. As we saw with the wiring diagrams earlier. By the way while we are on the subject. Are your haynes wiring diagrams correct?.

This manual is stating that if the voltage is wrong then check the IAT. If this is found to be working correctly. Check wiring or replace PCM/ECM. My option is, I would rather swap the IAT than replace the ECM/PCM

let me know
Dave H

Hey Mike.

If you don't mind me asking. When and why did you replace the ECM.?

Let me know
Dave H

Good question, Dave. What WERE the symptoms you were trying to correct when you changed the ECM?

Mike, I wish you had told us that earlier. Before we start changing parts, we need to know what is causing the ECL to stay on. Can you get us the codes and descriptions ASAP.

Hey Mike.

I remember you mentioning it now and I looked back through the post's ..it's a big jump from coolant temp sensor to bad ECM ? ... was it a NEW ECM or one from a wrecker's yard or reconditioned .. ?

So this fault has been happening for 3 month's and did not just start happening .. you said earlier that you alway's put it down to the alarm .. has it been the same fault all along ?? also are you going to change the IAT please and if possible have the codes read again...LOL ...

let me know

Mike, even though the only code you originally had was for the CTS, there may be others stored now. If we try to continue from here without knowing what may be srored in ECM memory, all we're doing is guessing and we're going to wind up with another 20 pages of dialog. Please, do us all, including yourself, a scan the ECM memory. It may well be the alarm, but we need to rule out what the ECM has to say first. Your thoughts on this?

D.H.) I agree with James. We need to know what fault's. If any. Are stored on the ECM. Also did the CEL go out directly after replacing the ECM and then come back on. Or. Has it never gone out at all?

The only thing between the battery and the starter is the start relay. The relay is closed by the key switch in start position. This circuit will have nothing to do with the engine running/stalling.

Hey Mike.

Most good autopart's stores (autozone etc.) will check the codes for free .. ring and check before you go .. I think o'reilly's have just started chargeing ...let us know

Hey Mike.

A faulty MAP sensor will generally give driveability issues rather than cold start issues ..?

Manifold Absolute Pressure (MAP) Sensor
The MAP sensor monitors intake manifold intake air volume and delivers an input signal to Engine Control Module (ECM). The ECM uses input signal for controlling fuel injection system and ignition timing (spark advance).

Did you get the ECM scanned yet ?.. this will hopefully tell us where the fault lies !!

Let me know

Hey mike.

There is a code 31 on 2.2L 4 cyl ..it's MAP sensor circuit

code22 is ECT sensor which you already replaced !

code24 is IAT sensor which we have aked you to change ..!!

Let me know !

Mike.

Be very carefull working with the ECM even static electricity can damage the ECM .. the ECM will shut the car down if it senses something is wrong .. there are no cicuit breakers to cut engine .. unless you want to call the ECM a cicuit breaker .. ?

1))The ECT sensor would give driveability issues once vehicle is running !!

Engine Coolant Temperature (ECT) Sensor
The ECT contains a built-in thermistor in which resistance varies according to engine coolant temperature. The ECT delivers an input signal to THW terminal of Engine Control Module (ECM). The ECM uses input signal for controlling Pulsed Secondary Air Injection (PAIR) system (if equipped), fuel injection system, overdrive operation on electronically controlled transaxles/transmissions, ignition timing (spark advance), idle speed control system, fuel pressure control system (if equipped), heated oxygen sensor system (if equipped) and EGR system.

2))The IAT will give hard start and cutting out/stalling isssues to the vehcile on starting!!

Intake Air Temperature (IAT) Sensor
Intake air temperature sensor is mounted in either airflow meter or air filter housing. Intake air temperature sensor measures incoming intake air temperature and delivers an input signal to THA terminal of Engine Control Module (ECM) for controlling fuel injection system, fuel pressure control (if equipped) and heated oxygen sensor systems (if equipped).

3))The MAP sensor will give stalling/cutting out issues and driveability issues once running !! fuel lean/rich

Manifold Absolute Pressure (MAP) Sensor
The MAP sensor monitors intake manifold intake air volume and delivers an input signal to Engine Control Module (ECM). The ECM uses input signal for controlling fuel injection system and ignition timing (spark advance).

ALL 3 use the same ground terminal from the ECM you could check this terminal

NOTE:If Codes 22, 24, 31 and 41 are output together, inspect ECM terminal E2 (ground) circuit. Repair as needed.

let me know