Question about 1993 Chevrolet S-10 Blazer

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1993 full size blaser 5.7 code 43

I jumped the obd1 connector and come up with a code 43 I checked alldata and it said for this year truck a code 43 is the knock sencor so I replaced the knock sencor but I still have the code 43 evan after clearing the code any input will help.

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  • dhicksaw Dec 26, 2008

    its only a one wire knock sencor but I will check it thanks for the info

  • dhicksaw Dec 26, 2008

    I have alldata at my work and all it said was a knock sensor.

    well I guess know I have something else to check into then.is there esc module and where is it if you know. thanks alot for the info

  • dhicksaw Dec 26, 2008

    thanks alot it all helps i have been racking my brain on this for awhile now

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Check for a 5 volt reference signal at the wiring to the knock sensor. With key on engine off one of the wires to the sensor should have 5 volts.

Posted on Dec 26, 2008

  • John Weathers
    John Weathers Dec 26, 2008

    Are you sure all code 43 said was knock sensor. According to my manual code 43 can be either knock sensor or Electronic spark control circuit fault.

  • John Weathers
    John Weathers Dec 26, 2008

    There should be one. It should have the letter HKR stamped on it. I know on some older models it was mounted around the throttle body so that should give you a place to start looking. Hope all this helps!

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1 Answer

How to test the obd codes


What is year--make--model? Generally 94 model year and older is obd1. 96 and newer is obd2, generally. 95 can be a cross-over year and could have a hybrid diagnostic connector.

Usually with obd2, you need an obd2 code reader. OBD1 you should be able to access some codes, yourself, w/o a code reader. Different makes can have different procedures for accessing codes/obd1.

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Where is the obd port on my 1993 isuzu Amigo


wow no engine size stated, and MATTERs.!
with no tech1 or 1a scan tooL (real scan tools)
what good is DLC?>
sure jumper CODES< (DTC errors in todays parlance)
there is abs tool.. but only on some cars.

and more. read the FSM yet?
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google Isuzu DLC jumpers, nets you all this.

http://www.troublecodes.net/isuzu/

there is no world standards for OBD1 so DCL are
every freakn where.

in cab or engine bay or like hondas, on PCM casiing
wild and wolly DLC>


quote

Multi-Port Fuel Injection

Amigo,Trooper II , Rodeo & Pickup
On Rodeo, Amigo, and Pickup (except 1993-95 models W/3.2L engine), connect the single wire diagnostic leads located behind the left hand kick panel together. On 1993-95 Rodeo models W/3.2 engine, the data link is located under the left hand side of the instrument panel. On all models, turn the ignition switch to the On position. At this point, the "Check Engine" light should flash. codes


25011203-uqsqk1sqel1nykdqv4diatnw-3-0.jpg 12pin version below.
jump pins,(for PCM errors) pins A > B
25011203-uqsqk1sqel1nykdqv4diatnw-3-1.gif
the codes are here.
http://www.troublecodes.net/isuzu/iszucel/





25011203-uqsqk1sqel1nykdqv4diatnw-3-3.jpg see no in the engine bay at all, like the 1 guess

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Wiring schematic data link connector


This seems to be the most comprehensive detail on 'on board diagnostics':

; On board diagnostics

Good luck-

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Here is a listing of GM OBD1 codes:

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That is an OBD1 System

Your code reader won't work

You need OBD1 capable reader or
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If you need to know where, I will look in my
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Hey everyone. I have a '95 Dodge Ram 1500, 5.2, Manual trans. I've been a mechanic for 27 years and a member of Fixya for a couple. I've been over this darn truck from top to bottom and cannot find the...


On board diagnostic (OBD) was designed on vehicles equipped with electronic fuel injection so you can generally retrieve the codes yourself. No need buying a scanner or running to any parts stores to check the engine light. This system is called obd1 and applies to most vehicles made before 1995 for domestics and 1993 on imports.Dodge trucks have a diagnostic trouble code retrieval method, Unlike Gm and Ford trucks the Dodge line of trucks has no data port connector to gather codes from.Instead Dodge has a ignition cycle activation sequence that anyone can active by turning the ignition key on off in rapid succession five times with the cycle ending in the "on" position.
Once this activation has started the check engine light will start to flash. The first set of check engine light flashes will be the first digit of the two number code. After the check engine light pauses for a short time it will start to blink again starting the second digit identification and completing the code's second number. If additional trouble codes are stored in the computer the first digit will begin to flash, and then the second digit. For example: the check engine light flashes four times, pauses and then flashes three more times the code is 43

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There is a connector but it is not like the connector used in the newer 1996 OBD2 cars, your year uses OBD1, here is how you check for codes in this car.

Acura OBD1 Codes Retrieval
Acura vehicles 1986-95 obd1 code retrieval
There are a few different ways to retrieve the codes for "check engine light" for Acura vehicles. One method is to use a led light (sometimes 2 led lights) on the computer or controller box itself. If it has 2 led lights, the color is red and amber. The red is used for flashing the codes whereas the amber is used for adjustment. If you have only a single led light indicator, then that is used for flashing the code.
The controller box can be found by lifting the carpet of the passenger side front foot well or floorboard. You can see the led lights without removing the controller. On other models, you can find the controller under the driver or passenger front seat.
The second way to get the code is using a jumper wire on the diagnostic connector located on the kick panel at the front passenger side. You then watch the codes being flashed at the dash panel after you turn the key on. To read the code being flashed is easy. Example: Code 23 is 2 long flashes followed by 3 short flashes. A longer pause separates the next code that follows.
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Code 3 and 5 map sensor
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Code 9 Crank angle sensor (CLY)
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Code 13 Atmospheric pressure sensor
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Code 15 Ignition output signal
Code 16 Fuel injector fault
Code 17 Vehicle speed sensor
Code 21 Spool solenoid valve
Code 22 Valve timing oil pressure switch fault
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1 Answer

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