Ali_6306
(Junior Member)
12/30/12 01:27 PM
4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Hi,

recently got a half cut with following specs:

4G-63 (silver top)
non-turbo
Cyclone
Single wire O2 sensor
ECS (since the donor was half cut, ECS control unit is missing and ECS is not functional)
EPS (selection switch missing)
Front Wheel Drive
4 A/T KM175

Engine, ECU, wiring transferred and engine started without issues. However after the first run, a warning light in the instrument cluster lit up. If anyone can kindly explain what it is for?


Ali_6306
(Junior Member)
12/30/12 01:42 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

The light can be tracked to ECU pin 62 (wire color LB)



misterfixit
(Victory Runner)
12/30/12 06:36 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Cat Temp sensor. There's a second temp sensor in the entrance to the CAT.

There is a way to Bypass it, you fool it with a pack of low ohm resistors. I cannot remeber the specific value, but I had to do it on my Eterna Sava to pass inspection.

Rich


Ali_6306
(Junior Member)
12/31/12 07:26 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Thank you Rich.

Don't know much about the resistors, so I'll have to go with the new part. Do you know the part#? Also will appreciate if you can help with the ECM pin that connects to the CAT temperature sensor.

ECM I got from the donor is:
MD 128617
E2T33371A

I will upload the images later if it helps.


dandanger
(Junior Member)
12/31/12 09:48 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

If you dont need to have the light lit you can just cut the wires for sensor or disconnect. The warning light stays shut.

turbowop
(Hard Snarker)
12/31/12 10:56 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Just pull the bulb.

Ali_6306
(Junior Member)
01/01/13 01:04 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

dandanger: I can do that if I know the ECM pin for this sensor; OR where the sensor is located. I didn't get the CAT with the donor, so I am wondering that the wire would already be disconnected. Had a look in the engine bay, but couldn't see any disconnected wires.

turbowop: wouldn't just pulling the bulb (and leaving the input to ECM unattended) restrict performance?


Ali_6306
(Junior Member)
01/01/13 05:13 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

ECM images:










FlyingEagle
(Eager Beaver)
01/01/13 10:30 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

From what I have gathered, this ECU is for a GVR4 JDM market:

MD128617 1991-92 GVR4 E39A JDM WoC

So, the car should be standard shift, and turbocharged?

I googled it and get conflicting results, but when I added this to the archive it would have been with good reason at the time.

Can anyone confirm what chassis and engine setup this ECU belongs to. I'll update with any changes. I don't have CAPS or ASA running anymore.

For reference, I believe this is where I sourced this particular bit of information from:
click


ktmrider
(Cool Guy Crowd)
01/01/13 11:18 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Pull the cover off the ECU and verify if the 5-digit number on top of the ECU side connectors matches the 3371A portion.

Lots of covers get swapped over here over time.


misterfixit
(Victory Runner)
01/01/13 06:06 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

The connector is on the floor, next to the centre console About level with the gear shift on a 4wd, on a fwd it's under the driver seat and the blower vent.

It has a red wire and a white wire. The sensor screws into the mouth of the cat.

From memory it's 15 ohms you need to jump it with. On my Eterna we used three in parallel (can't remember the value of each) to get the wattage up. It will show as a light because the ecu can see the sensor flat lining.

This sensor is a thermocouple to see if the cat is sitting at the right temp. Hence you don't remove it, you just need to fool it.

Rich


Ali_6306
(Junior Member)
01/02/13 02:11 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Hi FlyingEagle, the donor is certainly a JDM, but non-turbo FWD (A/T). I have included relevant snapshots:

Vehicle model plate:


1989 CAS:


Donor Engine Bay:


Although MD128617 matches, E2Txxx is different. In my opinion the print on ECM can be treated as authentic. MD128617 coupled with E2T37371 on the source link shared could be a typo.


Ali_6306
(Junior Member)
01/02/13 02:16 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Hi ktmrider,

you are right this could happen. But doesn't appear to be the case here. This box has E33 board.

ECM board JE33IA947A:


Ali_6306
(Junior Member)
01/02/13 02:48 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Hey Rich,

Bulls eye! I can see the harness exit point from the chasis under driver seat. It was the first set of wires I observed to be cut from some sensor. I tracked all the other wires (harness cut from middle since the donor is front half only) whether they connected to ECM, but not these as for no reason I assumed these would be for ECS.

I have asked someone to help with 15 ohms resistor set. If possible, can you (or share a source where I can) confirm that 15 ohms is what is required? Or otherwise share the part number for this sensor?

Cheers,

Ali


FlyingEagle
(Eager Beaver)
01/02/13 11:01 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

I installed all 4 versions of ASA yesterday, so I could now run VIN's and chassis/serial numbers again.
Here is the information I got from your chassis number:
Model + Chassis #
E33A 0031428
Classification
SRGM2
Option
OOO
Exterior
H84
Interior
09D
Production Period
1988 11 1 - 1988 11 1

ECU
PNC 82522
Part Number
MD128617

That matches your firewall picture, and confirms your ECU for what it is.

I've updated my listings now, thanks for you help Ali!


Ali_6306
(Junior Member)
01/03/13 05:40 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

No worries mate!

Ali_6306
(Junior Member)
01/03/13 11:27 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

I found this against the EGR temperature sensor:
Temperature-degrees (Fahrenheit) Resistance (ohms)
50 (122) 60 - 83
100 (212) 11 - 14

Do you think these should also apply to the CAT temperature sensor?

Ali


misterfixit
(Victory Runner)
01/04/13 07:05 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

I'll have a look and see what I can find in the Jap manuals. Only the Japanese cars had the sensor, to monitor the entry temp into the cat. If you are not running a cat, then you won't need the sensor. The cat acts as a resistance back pressure and heat build up. The surface of the cat needs a level of temperature before it works efficiently.

Best thing to do if not on the stock system is to bridge it with the resistor and it will be have ok. Because it's a tem sensor all you do is fool it to a setting where it causes no issue.

As I said I'll have a look and report back, but 15 ohms is what I used on mine.

Rich


misterfixit
(Victory Runner)
01/04/13 07:57 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Hi,

Had a look in the techmanuals and the shop manuals.

The tech manual refers to it as a temp sensor and says it provides a signal for 900 degrees Centigrade.

The shop manual lists a basic test to do at room temperature looking for 3ohms at 5 to 35 degrees Centigrade.

The 15ohms is to factor for the running temp.

I hope this helps.

Rich


Ali_6306
(Junior Member)
01/07/13 01:31 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Thank you Rich!

Regards,

Ali


Ali_6306
(Junior Member)
01/09/13 01:03 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Guys here is another caution light. Its been in many speedometers I have seen, but never seen one that is working. I attempted to reverse engineer it, but there is no wire in this vehicle's harness to operate it. Just wondering what it may be for:





fuel
("Just to be pedantic!")
01/09/13 01:42 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

low coolant level in reservoir. The light was not used on all models, only in some select markets.

Ali_6306
(Junior Member)
01/09/13 04:07 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

That was quick. Thank you Fuel!

Ali_6306
(Junior Member)
01/11/13 06:20 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

I'm supposed to get the 15 ohms resistor today. Looking forward to testing it tomorrow.

BTW, I got the following link which suggests that the rectangular box light is for headlight washer fluid level. Apparently they are right:
Mitsubishi low headlight washer fluid warning


misterfixit
(Victory Runner)
01/12/13 02:29 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Thats low headlight washer fluid, not coolant. In all the EU cars i've had it's been that.

I don't have a uk owners manual scanned here though so I can't post the manual blurb.

Has it got head light washers?

Rich


Ali_6306
(Junior Member)
01/14/13 08:05 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Neither my car nor the donor had headlight washer. Which explains why this light was not operative.

About the CAT temp sensor: The resistance I got here was not working as it produced erratic resistance everytime I checked. So I visited the electronics market and without much effort got hold of a variable resistance (0 to 100 ohms). It works perfect once set to produce 15 ohms resistance. Before I connect it to ECM, can you confirm whether all I need to do is to connect the wires (red & white) to two interfaces of the variable resistance? Is there any thing else I need to pay attention to?

I believe if the light goes out, it means success.

Ali


misterfixit
(Victory Runner)
01/15/13 08:22 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

yup. Just connect the two wires to the load.

As it's a variable resistance you could do a sweep and let us know whats the minimum it goes out at

Rich


Ali_6306
(Junior Member)
01/18/13 06:17 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Sure Rich. Will do so as I couple it tomorrow. TGIF!

Ali


Ali_6306
(Junior Member)
01/20/13 02:54 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Hi Rich,

Issue fixed. I connected the wires to the resistance and light goes out. Thankyou for the help mate! (Y)

The variable resistance I have ranges from 1.3 to 108 ohms. I checked all through the range, but the CAT temp light stays off until it is disconnected.

Thank you again for the guidance!

Regards,

Ali


misterfixit
(Victory Runner)
01/23/13 10:28 AM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Cheers for that!

Here's the wiring for 87.10 N/A 4G63. Config diags too:














Hope this helps!



Rich


Ali_6306
(Junior Member)
01/30/13 02:33 PM
Re: 4G63 Cyclone Non-Turbo - Unexplained warning lights in the speedometer

Thank you Rich,

Cheers!



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