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ECU code reading - first timer rookie #1104093
01/20/18 08:19 AM
01/20/18 08:19 AM
J
jeffmort  Offline OP
Need a Spot
Joined: Dec 2017
Posts: 15
Encinitas, CA
I have a new to me 1991 Montero LS 4-door. I have only owned 1970 and older "fun" cars before this car so I am not familiar with fuel injection systems, ECU's etc.
I am having a problem with my car cutting out/dying at random times so I am trying to diagnose the problem by making my first attempt at checking the ECU for an error code using my voltmeter,
I have read through the OEM service manual as well as good threads on this site so I think I am on the right track to make my first ECU check/diagnosis.
I have located my self diagnosis connector (underneath my glove box). When compared to the picture/diagram in the service manual, the connector on my car appears to be installed "upside down" relative to the diagram shown in the manual, which is fine, I just want to make sure that I am connecting my positive and negative voltmeter wires to the correct spots on the ECU connector.
Attached is a picture of how I believe my voltmeter should be connected - did I connect it correctly?
I will follow up with my diagnosis results to let you know what I came up with...and probably ask more questions.
Thanks.
Jeff

Attached Files
IMG_2519.JPG (7 downloads)

Jeff
1991 Montero
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Re: ECU code reading - first timer rookie [Re: jeffmort] #1104102
01/21/18 12:33 AM
01/21/18 12:33 AM
rxinhed  Offline
Trail Leader
Joined: Feb 2005
Posts: 7,090
Gerber, CA *****
Connectors usually are 1 way position, but...?


1988 Mighty Max turbo 2.6 service body
1980 Power Wagon W400
Sundry Mitsubishi Montero Gen 1 parts
Parts vehicles: 1980 D50 2wd, 1988 Mighty Max 4wd, 89 LS Montero 4-door, 2002 Sport AWD
For Sale: 1989 Power Ram 50 extended cab

Moderated by  Macka, Mudraider, off-roader, PajEvo, rxinhed 

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