Question about 1995 Toyota 4Runner

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Where is the diagnostic module (test plug) for a 95 4runner?

My check engine light is on and I bought a diagnostic tool, I cannot find the female connector diagnostic tool.

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My 1995 4 runner is serging what can it be..

Posted on Feb 25, 2010

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Its under the hood next to the fuse box on the passenger side fender well. It will have a small cover marked "diagnostic" attatched to the fuse box. Where did you get the diagnostic tool? I need one also.

Posted on Feb 13, 2010

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Feel just under the drivers side dash you find it somewhere under there.

hope this helped
please rate well

Posted on Mar 06, 2009

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My 04 Lincoln LS v.6 sometimes act like it's flooding out and gets to losing power,sometimess it won't idle,ive changed coals,fuel filter,and plugs and still can't find the problem


Your best bet would be to take your vehicle to a qualified repair shop ! You have no diagnostic skills shown by the list of parts replaced ! Check engine light codes ? Scan tool diagnostics , scan tool engine sensor data ! Fuel pressure an flow testing , hook up fuel pressure gauge ! Plugged exhaust , back pressure testing etc.... Videos on youtube basic engine testing an electrical systems testing , fuel system testing etc....

Sep 06, 2016 | 2004 Lincoln LS

1 Answer

I have a 04 explorer and I put anew fuel pump an my gauge on the gas hand still don't work but number 17 fuse is hot on both sides what is 17


Where ? under hood fuse box or inside fuse box ?
F1.17 20 Four-wheel drive control module (14B466)
F2.17 15 Battery saver relay, Accessory delay relay
Visual Inspection Chart Mechanical Electrical
  • Engine oil level
  • Door adjustment
  • Engine coolant level
  • Fuel tank
  • Fuel evaporative system
  • Battery junction box (BJB) fuse 15 (5A)
  • Central junction box (CJB) fuses:
    • 15 (5A)
    • 21 (5A)
  • Miniature bulb(s)
  • Circuitry
  • Instrument cluster
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card or disk is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • SCP or UBP circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for the instrument cluster, Go To Pinpoint Test G . For vehicle security module, refer to Section 418-00 ; for anti-lock brake system (ABS), refer to Section 206-09 ; for restraint control module, refer to Section 501-20B .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the instrument cluster.
  1. If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index or the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics. For all other DTCs, refer to Section 418-00 .
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart to continue diagnostics.
Instrument Cluster Self-Diagnostic Mode
To enter the instrument cluster self diagnostic mode with the engine off, press and hold the odometer reset button (base cluster) or the message center reset button (message center cluster). Turn the key to the RUN position and hold until the display indicates tESt (base cluster) or TEST (message center cluster) usually within three to five seconds. Depress the reset button once to advance through each stage of the self-test.
To exit the instrument cluster self-test mode, turn the ignition to the OFF position. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
  • Incorrect fuel gauge indication
  • Circuitry.
  • Fuel level sensor.
  • Fuel pump module.
  • Fuel tank.
  • Instrument cluster.
  • Go To Pinpoint Test H .
You need to test , don't guess ! Your best bet would be to take your vehicle to a qualified repair shop .
B1201 Fuel Sender Circuit Failure Instrument Cluster Go To Pinpoint Test H . B1204 Fuel Sender Circuit Short to Ground Instrument Cluster Go To Pinpoint Test H .

Jun 07, 2016 | 2004 Ford Explorer

1 Answer

I have a 2004 envoy xuv and my service 4wd light came on but I don't have any lights on the switch and it won't change into anything and I don't hear anything trying to engage and lights don't blink


The Automatic Transmission Diagnostic System Check is an organized approach to identify a problem created by an automatic transmission. The Diagnostic System Check - Engine Controls in Engine Controls - 4.2L or Diagnostic System Check - Engine Controls in Engine Controls - 4.8L, 5.3L and 6.0L is the diagnostic starting point for an automatic transmission complaint. The Diagnostic System Check - Engine Controls in Engine Controls - 4.2L or Diagnostic System Check - Engine Controls in Engine Controls - 4.8L, 5.3L and 6.0L directs you to the next logical step for diagnosing a transmission concern. Perform this check only if there is a driveability complaint or if you have been directed here from another service information section.
Follow the table to help reduce diagnostic time and help prevent unnecessary replacement of good parts.
  1. Install a scan tool.
  2. Important: Check for applicable service bulletins before proceeding with this test. Perform this test only if there is a driveability complaint or if you have been directed to this table from another section in the service information.
    Important: Do not turn the ignition OFF when performing this diagnostic procedure. Do not clear the DTCs unless instructed by this diagnostic procedure.
  3. Turn ON the ignition, with the engine OFF.
Does the scan tool turn ON?
--
Go to Step 2
Go to Diagnostic Starting Point - Data Link Communications in Data Link Communications

2
Is the MIL ON?
--
Go to Step 3
Go to Malfunction Indicator Lamp (MIL) Inoperative in Engine Controls - 4.2L or Malfunction Indicator Lamp (MIL) Inoperative in Engine Controls - 4.8L, 5.3L and 6.0L

3
Attempt to establish communication with the PCM controller module or modules.
Does the scan tool communicate with the PCM control module or modules?
--
Go to Step 4
Go to Diagnostic Starting Point - Data Link Communications in Data Link Communications

4
Important: Diagnostic Trouble Codes (DTCs), engine performance, and transmission default actions can greatly affect the transmission performance. Ensure that these items are not the cause of a transmission concern.
Use the scan tool Capture Info function in order to save or capture (Store Info) any DTC Information.
Are there any DTCs present?
--
Go to Diagnostic Trouble Code (DTC) List/Type
Go to Symptoms - Automatic Transmission
Your best bet is take to transmission repair shop or the dealer

Dec 04, 2015 | Cars & Trucks

1 Answer

2002 chevy silverado trys to stall in any condition sometime it will stall. all dash light will come on. starts right up.


Is check engine light Lit ? You should have all the computers on the vehicle check for DTC'S - diagnostic trouble codes ! Check the battery an all connections !
Diagnostic Starting Point - Engine Electrical
Begin the system diagnosis with the Diagnostic System Check - Engine Electrical . The Diagnostic System Check will provide the following information:
?€¢
The identification of the control module(s) which command the system.


?€¢
The ability of the control modules to communicate through the serial data circuit.


?€¢
The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
Diagnostic System Check - Engine Electrical
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
The symptom list in Symptoms will determine the correct diagnostic procedure to use.
The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
Step
Action
Yes
No

1
Did you perform the Battery Inspection/Test?
Go to Step 2
Go to Battery Inspection/Test

2
Install a scan tool.
Does the scan tool power up?
Go to Step 4
Go to Scan Tool Does Not Power Up in Data Link Communications

3
Important: The engine may start during the following step. Turn OFF the engine as soon as you have observed the Crank power mode.
Access the Class 2 Power Mode in the Diagnostic Circuit Check on the scan tool.
Rotate the ignition switch through all positions while observing the Class 2 Power Mode on the Scan Tool. Refer to the Serial Data Power Mode table within the Body Control System Description and Operation in Body Control System for a list of the power mode states that correspond to each ignition switch position.
Does the Class 2 Power Mode parameter reading match the ignition switch position for all the selected positions?
Go to Step 4
Go to Power Mode Mismatch in Body Control System

4
Turn ON the ignition, with the engine OFF.
Attempt to communicate with each module on the class 2 serial data circuit:
• The body control module (BCM)
• The driver information center (DIC)
• The instrument panel cluster (IPC)
• The powertrain control module (PCM)
Does the scan tool communicate with any module on the class 2 serial data circuit?
Go to Step 5
Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications

5
Select the Display DTCs function for each module. If using a Tech 2, use the Class 2 DTC Check feature in order to determine which modules have DTCs set.
Record all of the displayed DTCs the DTC status and the module which set the DTC.
Does the scan tool display any DTCs?
Go to Step 6
Go to Symptoms - Engine Electrical

6
Does the scan tool display any DTC beginning with "U"?
Go to Diagnostic Trouble Code (DTC) List in Data Link Communications
Go to Step 7

7
Does the scan tool display any DTC beginning with "B"?
Go to Diagnostic Trouble Code (DTC) List in Body Control Systems
Go to Diagnostic Trouble Code (DTC)

Oct 28, 2015 | Cars & Trucks

1 Answer

1997 lincoln continental will not show the miles or any data by going through the systems check most data comes incomplete what would cause this to happen?


This is one you should take to a qualified repair shop ! The electronics involved , a factory scan tool needs to be hooked up to the vehicle !
Instrument Cluster-Electronic Inspection and Verification
  1. Verify the customer's concern by operating the instrument cluster (10849) to duplicate the condition and by observing the indicators and gauges to determine if they are operating properly with the ignition switch:
    • in RUN with the engine OFF
    • in START before the ignition switch is released
    • in RUN with the engine running
  1. Inspect to determine if any of the following mechanical or electrical concerns apply:


    VISUAL INSPECTION CHART Mechanical Electrical
    • Damaged fuel tank.
    • Engine coolant level.
    • Engine oil level.
    • Washer fluid level.
    • Accessory drive belt.
    • Fuse Junction Panel Fuse:
      26 (10A), 28 (10A), 5 (10A).
    • Circuit wiring.
    • Switches or sensors.
    • Stuck fluid level sensor.
  1. If the inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with inspection and verification.
  1. If the concern remains after inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the data link connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the virtual image instrument cluster , GO to Pinpoint Test C . If the NGS responds with NO RESPONSE/NOT EQUIPPED for the lighting control module, GO to Pinpoint Test D .
    If the DATA LINK DIAGNOSTICS test is passed for the virtual image instrument cluster and lighting control module(s), retrieve continuous DTCs and execute Self Test Diagnostics for the virtual image instrument cluster and lighting control module(s) to retrieve current DTCs.
  1. If self test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics.
  1. If DTCs are retrieved for the virtual image instrument cluster, go to the Virtual Image Cluster (VIC) Diagnostic Trouble Code (DTC) Index to continue diagnostics. If DTCs are retrieved for the lighting control module, go to the Lighting Control Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If the virtual image instrument cluster cannot be accessed by the NGS tester, go to Pinpoint Test C . If the Refer Lighting Control Module cannot be accessed by the NGS tester, go to Pinpoint Test D .
Rotunda Service Bay Diagnostic System (SBDS®) 001-00001 may also be used to diagnose this system.
It's more then likely you need a new instrument cluster ,but you need to have it checked for any codes stored ! A obd2 code reader won't do it ! factory scan tool !
It's

Apr 29, 2015 | 1997 Lincoln Continental

1 Answer

How can l rectify my four wheel gear? It can't change from 4x4 low.


The only way your going to fix this is have someone with a up scale scan tool check an see what DTC's are stored in the ABS an engine modules an the 4x4 system ! The O2 sensor has nothing to do with the 4x4 ! An the ABS has nothing to do with the 4x4 not working either !
Four-Wheel Drive Systems - Electronic Shift Inspection and Verification - Electronic Shift
  1. Verify the customer concern.
  1. Visually inspect for obvious signs of mechanical or electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Axle shafts and universal joints
  • Driveshaft and universal joints
  • Fluid leaks
  • Matching tire size
  • Battery junction box (BJB) fuses:
    • 17 (20A)
    • 18 (20A)
  • Central junction box (CJB) fuse 12 (5A).
  • 4WD control module
  • Wiring harness
  • MSS
  • Gearmotor encoder assembly
  • Connector(s)
  • Circuitry
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
  • check that the program card is correctly installed.
  • check the connections to the vehicle.
  • check the ignition switch position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
  • SCP+, SCP-, UBP or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
  • No response/not equipped for 4WD control module, Go To Pinpoint Test B .
  • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the 4WD control module self-test.
  1. If the DTCs retrieved are related to the concern, go to the 4WD Control Module Diagnostic Trouble Code (DTC) Index - Electronic Shift to continue diagnostics.
  2. This is going to be way over your hear , unless you fix these systems on a regular bases ! An not to mention the tools involved , do yourself a favor an take it to a shop that has experience in these matters an save yourself time an money !

Feb 19, 2015 | 2003 Ford Explorer

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

I have a 1997 ford f150 4x4 4.6 v8 extended cab pick up, my engine light was flashing and had no temp gage, tested the sensor and is was fried, bought a new sensor and put it in, the engine light no longer...


Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Oct 02, 2012 | Cars & Trucks

1 Answer

How do you check the ignition discharge module to see if it works properly


Diagnostic Procedure .
  1. Check the ignition discharge module's ground connection
    • Connect a test lamp to battery positive (B+) and pin 6 of the ignition discharge module's connector. The test lamp should light up.
Is the test lamp on?

YES: Continue with point 2.
NO: Check and rectify the wiring, including grounding point G7P. Then continue with point 4.

Read more: http://www.justanswer.com/questions/1zw7z-1997-saab-900se-2-0-turbo-no#ixzz0NzPyUQ6X
  1. Check the ignition discharge module's 12 V supply
    • Connect the test lamp to pin 10 of the ignition discharge module's connector and battery negative (B-).
    • Activate one of the ignition coils by means of the ISAT scan tool. The purpose of this is to cause the main relay to operate.
The test lamp should light up.

Does the test lamp light up?

YES: Continue with point 3.
NO: Continue as described in "Fault diagnosis, main relay".

WARNING: The electronic ignition system generates up to 40,000 Volts. Such voltages can prove fatal to people with weak hearts or those who are fitted with a pacemaker. All due caution should therefore be observed when carrying out any work involving the ignition system .

IMPORTANT:
The ignition discharge module must be positioned with the ignition coils downwards during the test so that the transformer oil will provide good insulation in the high-tension part of the coils.

Read more: http://www.justanswer.com/questions/1zw7z-1997-saab-900se-2-0-turbo-no#ixzz0NzQ3DWxI

  1. Check the operation of the ignition discharge module
Sparks should be produced on each spark plug that is activated.

Are sparks obtained?

YES: Change the spark plug and continue with point 4.
NO: Change the ignition discharge module and continue with point 4.
  1. Final check:
    • Try to start the engine.
Did the engine start?

YES: The remedial measure taken was correct.
NO: The fault is not in the ignition system.

Aug 12, 2009 | 2000 Saab 9-3 Viggen

1 Answer

2006 grand marquis


Generally check engine light problems have to be checked with a diagnostic tool. Under the dash would be a rectangular shaped plug with about 8 prongs, not sure exactly. That's normally where you would plug in the diagnostic tool.

Sep 23, 2008 | 2006 Mercury Grand Marquis

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