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How can I read trouble codes using a jumper wire on the diagnostic connector

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2 Answers

Can a diagnostic connector on 1995 Toyota 4 runner be jumped over with jumper wire to get check engine codes?


There is probably a way to access codes by using a jumper and causing the engine checklight or an integral led to flash in groups. I can't say which pin or pins need jumping.

I suggest you ask the question of google and click on the youtube video.

Jun 26, 2016 | 1995 Toyota 4Runner

2 Answers

How do I read trouble codes for 91 geo storm? Scanners are to new to read.


that is true.
but some cars running obd1 , can be scanned,. (i have one)
like all GM cars and even older, , some ford, , Honda's . Toyota;s
but this car is GEO, (underdog, but is really what. a Isusu.)
Isuzu's cars are mostly not raced or sold here now. so who's going to make scanner for such a rare car and engine and EFI?
there is no OBD1 standard, each company uses a unique design.
then,... so...
OBD2, in 1996 a USA invention is a standard and all tools work.
so....
what you have is the old blink codes. wink wink...
all OBD1 cars work like this (or very close)
you connect a jumper wire, and the CEL lamp flashes codes.
so is the CEL stuck on? running.
must come on key on, bad lamp or bad ECU.

you can check out Isuzu Impulse

Example storm post..OBD1991 (USA)
To put the ECM (Engine Control Module/Ignition Control Module/Engine Computer) into diagnostic mode, where it will flash codes at you using the "MIL" (Malfunction Indicator Light or "Check Engine" light), short pins 1 and 3 of the ALDL/OBD1 connector using a paperclip. When you then turn the key into the on position, the MIL should flash once, then pause a bit, then flash twice. That means code "12." If there are other codes, they will be flashed out as well. All codes are two digits.
end quote, on storm

but where is the connector DLC?
and which pin is 1 an 3
so. we google more, or look it up in alldata.com like most do.

or here
http://www.robietherobot.com/storm/stormFAQ.htm

that was the 1st google hit, using clear text human questions.
DLC jumper storm or Impulse.
or diagnostic jumper Impulse.

join a Geo storm or inpulse forum and ask for scan tools.
they will be custom tools. (or hacked, as i have done)

Sep 17, 2014 | 1991 Geo Storm

1 Answer

Where is the obd2 connector location on holden ra rodeo v6


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Connect white (test lead) and black (ground lead) wires that are branched from harness approximately eight inches from ECM. After leads are grounded, the "Check Engine" light will flash the diagnostic trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.I-MARK 84-85
Connect male and female test leads taped into wire harness near ECM. After leads are connected, the "Check Engine" lamp will flash the trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.
86-87 Impulse located near the ECM connector, is used to actuate the Engine Control Module (ECM) trouble code memory within the module. Two terminals (A and C) of this connector are used to activate the diagnostic trouble code system in the ECM. With the ignition switch turned On, engine Off, connect a jumper wire between terminals A and C. The "Check Engine" lamp will begin by flashing a DTC 12. DTC 12 = flash, pause, flash, flash. There will be a longer pause and a code 12 will repeat two more times. This code indicates the self-diagnostic system is operating. The cycle will then repeat until the engine is started or the ignition is switched Off. In most cases, DTC's will be checked with the engine running since no DTC's other than DTC 12 or 51 will be present without the engine running. Remove jumper wire from ALDL connector before starting engine. Reconnect jumper wire after engine is running.

Throttle Body Fuel Injection

The ECM test connection is located under the center console.
A built-in, self diagnostic system will identify problems in the throttle body fuel injection system. When a problem is detected, the diagnostic system will illuminate the "Check Engine" light.
When the engine is started, the Check Engine light should turn off.. If the light remains lit, the self diagnostic has detected a problem. To determine where the problem exists, ground the "Test" terminal of the connector with the ignition On, engine Off and watch the check engine light. Each DTC will flash three times (lowest to highest).

Aug 21, 2014 | Holden Rodeo Cars & Trucks

1 Answer

Where is diagnostic connector locationon 1994 toyota base pickup


The check engine light is used to blink out the trouble codes. The diagnostic connector is usually under the hood on driver's side, back near the firewall. Sometimes under the driver's dash. Use a jumper wire and connect terminals TE1 and T1. Then turn key to on, not start, and the check engine light will blink out the trouble codes. If no codes are present, the check engine light will stay on constantly. Remove jumper wire when diagnostics completed. To clear codes after repairs, disconnect the negative battery terminal for one minute, and then reconnect.
This site has Toyota code explanations:

Dec 30, 2013 | Cars & Trucks

1 Answer

Where is the diagnostic port located on an isuzu trooper 1995 V6 model


You can get the check engine light codes yourself on 1985-94 Isuzu vehicles by using a jumper wire between terminal pins 1 and 3 or A and B in the diagnostic connector. This diagnostic connector can be located anywhere from the driver side kick panel, passenger kick panel and sometimes at the center console. When using A and B terminal pins, getting the codes is similar to GM vehicles. Once the jumper wire is connected, turn your key on and read the codes being flashed in the dash panel.


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Nov 02, 2012 | Cars & Trucks

2 Answers

Where is the plug in a 1994 toyota camry to hook up the diagnostic code box


Hi, according to autozone.com, the connector is under hood, driver side, side of strut tower, mounted on strut tower. The pic below, hoewever shows it mounted to the intake manifold. This is an OBD1 connector. You must use an OBD1 scanner to extract trouble codes or use the manual procedure pasted below. Please let me know if you need an explanation of the trouble codes (please specify your engine and trouble code) or have any other questions.

jturcotte_451.jpg

All models except the 1MZ-FE engine is equipped with OBD I till 1995.
  1. Make sure the battery voltage is at least 11 volts.
  2. Make sure the throttle valve is fully closed.
  3. Place the gear shift lever in Neutral. Turn all accessories off.
  4. The engine should be at normal operating temperature.
  5. Using a jumper wire, connect terminals TE1 and E1 of the Data Link Connector 1 (DLC1).
  6. Turn the ignition switch ON , but do not start the engine. Read the diagnostic code by the counting the number of flashes of the malfunction indicator lamp.
  7. Codes will flash in numerical order. If no faults are stored, the lamp flashes continuously every 1 / 2 second. This is sometimes called the Normal or System Clear signal.
  8. After the diagnosis check, turn the ignition OFF and remove the jumper wire.
  9. Compare the codes found to the applicable diagnostic code chart. If necessary, refer to the individual component tests in this section. If the component tests are OK, test the wire harness and connectors for shorts, opens and poor connections.

Apr 20, 2011 | 1994 Toyota Camry

1 Answer

How do I obtain and read the error codes on a 1991 Geo Tracker?


You must use a short jumper wire to ground the white diagnostic connector. This terminal is part of the Assembly Line Diagnostic Link (ALDL), located under the dash near the ECM. This is under the passenger side glove box behind the kick panel.

To activate the diagnostic codes, jump terminals 1 and 3 (the two outer terminals of the white connector). Then turn the ignition switch to on (engine not running). The check engine light will flash a code of 12 three times and then display the stored trouble codes.

To clear the codes, remove the ECM fuse for at least 10 seconds.

Mar 07, 2011 | 1991 Geo Tracker

1 Answer

1994 F150 Airbag Trouble Code 51


Code 51 means you have to retrieve the real code from the computer.

Ignition switch should be on with engine off.

Locate the black RABS II diagnostic connector.

Disconnect the two halves.
Attach a jumper wire to the black with orange stripe wire side of the diagnostic connector. Ground the jumper wire ground for a few seconds. ABS lamp should start flashing.


Count the flashes. For example, three short flashes followed by one long flash indicates diagnostic trouble Code 4. The code will continue to repeat itself until the key is turned off. A code of 16 means normal system operation.
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The last step of the system test always includes clearing the Keep Alive Memory (KAM).

To do this, simply turn off the ignition while the diagnostic connector halves are separated

Then diagnostic connector should be re-assembled.

After getting the real code, then we can look it up and see what the 51 was trying to tell us to look for.

Sep 05, 2010 | 1994 Ford F150 Styleside Supercab

1 Answer

Need trouble codes for 1993 Cadillac F31 F47


prev.gif next.gif Reading Codes OBD-I Systems Fig. 1: Diagnostic trouble codes — 4.5L engine 84204010.jpg
Fig. 2: Diagnostic trouble codes — 4.9L engine 84204277.jpg
Fig. 3: Diagnostic trouble codes — 4.6L engine 84204442.jpg
Listings of the trouble codes for the various engine control systems covered in this manual are located in this section. Remember that a code only points to the faulty circuit NOT necessarily to a faulty component. Loose, damaged or corroded connections may contribute to a fault code on a circuit when the sensor or component is operating properly. Be sure that the components are faulty before replacing them, especially the expensive ones. The Assembly Line Diagnostic Link (ALDL) connector or Data Link Connector (DLC) may be located under the dash and sometimes covered with a plastic cover labeled DIAGNOSTIC CONNECTOR.
  1. On all 1990–95 models the diagnostic trouble codes can be read by grounding test terminal B. The terminal is most easily grounded by connecting it to terminal A (internal ECM ground). This is the terminal to the right of terminal B on the top row of the ALDL connector.
  2. Once the terminals have been connected, the ignition switch must be moved to the ON position with the engine not running.
  3. The Service Engine Soon or Check Engine light should be flashing. If it isn't, turn the ignition OFF and remove the jumper wire. Turn the ignition ON and confirm that light is now on. If it is not, replace the bulb and try again. If the bulb still will not light, or if it does not flash with the test terminal grounded, the system should be diagnosed by an experienced driveability technician. If the light is OK, proceed as follows.
  4. The code(s) stored in memory may be read through counting the flashes of the dashboard warning lamp. The dash warning lamp should begin to flash Code 12. The code will display as one flash, a pause and two flashes. Code 12 is not a fault code. It is used as a system acknowledgment or handshake code; its presence indicates that the PCM can communicate as requested. Code 12 is used to begin every diagnostic sequence. Some vehicles also use Code 12 after all diagnostic codes have been sent.
  5. After Code 12 has been transmitted 3 times, the fault codes, if any, will each be transmitted 3 times. The codes are stored and transmitted in numeric order from lowest to highest. NOTE: The order of codes in the memory does not indicate the order of occurrence.
  6. If there are no codes stored, but a driveability or emissions problem is evident, the system should be diagnosed by an experienced driveability technician.
  7. If one or more codes are stored, record them. Refer to the applicable Diagnostic Code chart in this section.
  8. Switch the ignition OFF when finished with code retrieval or scan tool readings. NOTE: After making repairs, clear the trouble codes and operate the vehicle to see if it will reset, indicating further problems.

Jun 28, 2010 | 1993 Cadillac DeVille

2 Answers

How do i check the codes on a 1993 s10 blazer 4.3


if you go to the auto parts store, they may sell a key that jumps out the dlc connector under the dash. the light will blink for the code.#

Aug 12, 2009 | 1993 Chevrolet S-10

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