Question about 1993 Pontiac Trans Sport

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Run diagnostic on van and the diagnostic code 5 is displayed

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Don't see a 5 listed anywhere for that vehicle

Posted on May 20, 2011

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The first thing that must be done is to have the electronic engine control computer scanned for fault code and then the diagnostics run based on those codes.

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Where is diagnostic plug 1992 range rover



Hi there,

As far as I can recall, some earlier Land Rover vehicles relied on reading LED flashes (or LCD display) from the vehicle's ECU computer itself, so try the following:

Locate the engine ECU (possibly hidden under the one of the front seats - remove carpet or cover; or behind the left hand kick panel). Once you have located the ECU and it has LED's or a display, do the following procedure:

1) Run engine up to operating temperature
2) Place gears in PARK or Neutral and turn ignition OFF & wait 3 seconds.
3) Turn ignition to position "II" (do not start) - Fault code will display
Note: repeat steps 2 & 3 to obtain any additional codes

4) If no codes display, then disconnect the White 5-pin connector plug (located behind r/hand underside of dash)
5) Repeat steps 2 (wait 3 seconds) & 3 again to see if codes display.

Feel free to post your codes here and someone will be happy to advise you further.

Cheers,

Jun 07, 2011 | Land Rover Range Rover Cars & Trucks

1 Answer

I have a 1998 Plymouth voyager and the climate control lights are flashing. I ran a test i found on the internet and got it down to two lights flashing(the ac and the recirculate). I got it to where the...


OK got your message on the other post (About the van) I am assuming that your Voyager is equipped with Automatic Climate Control. Follow the instructions below and you will get a better idea of what is wrong with your system.

Calibration/Diagnostics
1. To enter calibration/diagnostics test, set parking brake. Start and warm engine to normal operating temperature. With engine idling, turn blower switch to high. Turn mode switch to panel. Open all outlets. Move temperature to full cold.
2. Press and hold rear wash and rear wiper buttons simultaneously for 5 seconds (Until ALL LEDs illuminate). All LEDs should illuminate for 5 seconds. Rear wiper and intermittent rear wiper button LEDs will flash alternately during calibration/diagnostics test.
3. After approximately 60 seconds, if only the rear wiper button LED is flashing, calibration is successful and the system is okay. If rear wiper and intermittent rear wiper button LEDs are flashing, Diagnostic Trouble Codes (DTCs) are present. (See "Reading Diagnostic Codes" below)
4. To exit calibration/diagnostics test at any time, press the rear window defogger button, rear wiper button, or cycle the ignition off and then on. Test will automatically terminate 15 minutes after calibration/diagnostics is entered.

Reading Diagnostic Codes
1. Perform calibration/diagnostics test. If a DTC is present after calibration/diagnostics test has been performed, system will flash rear wiper and intermittent rear wiper button LEDs in sequence. Rear wiper represents code level, and intermittent rear wiper button LED represents code value.
2. Each time the rear wash button is depressed, rear wiper button LED wil cycle to the next code level in numeric sequence. After code level 5 is reached, rear wiper button LED will cycle back to code level 1. See table below.

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May 12, 2011 | Plymouth Voyager Cars & Trucks

4 Answers

I just got my car repaired and I need to get it to pass emmissions now. My service engine light is on but my mechanic said that I have to wait for other things to reset. Does anyone know how to get those...


it is called an OBD2 Readiness test, also called a "OBD2 Drive cycle test", if u want the test to take place more quickly here is what u must do.

General Motors (specific) OBD II Drive Cycle Performing a GM OBDII Driving cycle:
  1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122°F (50°C) and within 11°F (6°C) of the ambient air temperature at startup.
    Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run.
  2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire, and - if closed loop is achieved- Fuel Trim.
  3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  4. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  6. Accelerate. Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
  7. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

Jul 19, 2010 | 2000 Oldsmobile Silhouette

3 Answers

How do I do a Diagnostic System Check? Is this


If you can visit one autozone shop, they can read or scanning your OBD codes.

Codes are displayed on digital odometers on newer models. On many 2001 and newer models, holding in the trip odometer reset button while turning the key to RUN will start a self test, with a readout on the odometer. It will also activate all instrument panels, one at a time. We do not know if this will show computer codes, or whether it only tests the instrument panels. At the end, it may show a few odd codes that are firmware versions and not error codes.

On most cars, the codes will read out if the engine light is on - all you have to do is put the key into the RUN position.

Normally, to get codes, you put the key on OFF and then rapidly do OFF-ON-OFF-ON-OFF-ON (on some cars you have to do four or five, not three, OFF-ON cycles). On our test 2002 car, the key did not go back to unlock, so it was ACC-ON-ACC-ON-ACC-ON.

  • You may have to have the parking brake firmly set for the codes to show! (Thanks, Steven Midway)
  • Jon Yoon: The 1998 Caravan does the same check engine light code trick, but it also does an instrument diagnostic check if you hold the trip and reset buttons and turn the key to the run position and wait 5 seconds. This helped me figure out that my input and output speed sensors were broken but the actual speedometer dial could move.
  • For the 1999 Jeep Grand Cherokee and up, you do the switching the key on and off 3 times, but not quickly. You turn it to on so the odometer turns on, turn it off, and then back on, wait for the light to turn on, etc. On the fourth time you'll get a code, or you'll get the word "done." (Monica MacDonald)
A loose gas cap may light up the Check Engine light! (Thanks, Lyn Clark)
  • When the computer indicates major failure, it can activate Limp In mode, which guesses about data to compensate for sensor failure, allowing you to get the car to a mechanic. One major symptom of this is the transmission sticking in second gear. This is a feature!
  • 2002 Ram, put transmission in neutral, parking brake on, then do the acc-run key sequence 3 times.
  • Dan Stewart wrote about the 1999+ Voyager/Caravan with digital gear selection display:
    • There are 2 functions that can be accomplished with the key-on sequence. Get Diagnostic Trouble Codes by placing the key into the ignition. Push and hold the both the "Trip" and the "Reset" buttons with the left hand and turn the key to the "ACC" position (first position between "LOCK" and "RUN"). Continue to hold both buttons in and count to 5. Release both buttons, display should read trip mileage instead of total mileage. Push the "TRIP" button and the odometer will display DTC'S in rotating sequence instead of displaying total mileage.
    • The second function is an instrumentation diagnostic. Place key into ignition, press and hold both "TRIP" and "RESET" while turning the key to the "RUN" position. Continue to hold both buttons in until odometer displays "CODE". Release buttons. The display will then display "999". Afterward it will display "CHECK 0" and test the analog gauges. It will then display "CHECK 1" and test the digital displays

RESET THE COMPUTER
Normally the computer will eventually reset itself; you can also use a scan tool. (See our transmission repair page for information on resetting the computer's transmission information.) Disconnecting the battery for a few minutes generally resets the computer, though it also means losing clock settings.
Sid Willoughby wrote: “To clear the check engine light on a 2002 Dodge Ram once the problem is resolved. Start the engine and drive forward then in reverse (you only have to move the truck a few feet in each direction) the turn the ignition off. Do this sequence three times. When you start the vehicle the fourth time the check engine light should go out.” (This procedure may well work on other vehicles.)

CODE LIST 2001 which covers some vehicles from the late 1990s as well as newer ones. It shows the longer codes starting with the letter P.

Hope this help (remember comment and rated this).


Apr 09, 2010 | 2001 Dodge Caravan

1 Answer

2004 Odyssey, heat and A/C do not work unless van in motion


Since warm air eventually comes out when the vehicle is in motion, you may have an air mix door that is stuck in fresh or is somehow blocking warm air from the heater core.

To see if the air mix control motor is bad, you need to retrieve your Diagnostic trouble codes (DTC's) from the heater control panel. To run the diagnostic function, do the following:
1. Turn the ignition switch ON (II).
2. Turn the fan switch OFF.
3. Press the recirc control button to select Recirc (recirc light on.)
4. Press and hold the recirc button to select Fresh (recirc light off) and continue to hold the button down until the recirc light comes on for two seconds and then goes off.
5. If the system is okay, the recirc light stays off.
6. If there is a problem, the recirc light blinks the DTC to indicate the trouble. One blink=a problem in the air mix control motor circuit. Two blinks=problem in the mode control motor circuit
Three blinks=problem in evaporator temp sensor circuit.
7. Turn the ignition switch off to cancel the self diagnosis function. Run the diagnostic again after repairs are complete.

Note: the air mix control motor has a rod which connects to a plastic link. The link controls the mix doors and also connects to the heater control water valve via a cable. The air mix motor may check okay, but if the link is broken then you will still have problems. the motor is on the bottom of the heater unit in the front passenger's foot well.

May 10, 2009 | 2004 Honda Odyssey

1 Answer

Radio and clock will not work. The fuses are good i think.


Check fuses first. please rate as fixed if this solves you rissue. report back results.



VISUAL INSPECTION CHART
Mechanical Electrical
  • Integrated control panel with or without tape player physically damaged, misaligned, any controls inoperative.
  • Digital audio compact disc player physically damaged, misaligned, any controls inoperative.
  • Radio antenna lead in cable, electric antenna or bodyphysically damaged or misaligned connections.
  • Radio speaker mounting/speaker cones physically damaged, misaligned.
  • Radio ignition interference capacitor or radio frequency interference suppression bond misaligned, unclean and no metal-to-metal contact.
  • Mobile telephone transceiver; mobile telephone handset, mobile telephone microphone, mobile telephone transceiver holder cradle physically damaged, misaligned.
  • Open fuses: fuse junction panel fuses 8 (5A), 12 (5A), 20 (5A), 22 (5A), 24 (5A) or power distribution box fuse 17 (20A).
  • Open connectors.
  • Corroded connectors.


--------------------------------------------------------------------------
Section 15-00: Audio Systems—Service 1999 Taurus, Sable Workshop Manual DIAGNOSIS AND TESTING Inspection and Verification NOTE: Many customers do not understand the limitations of FM reception. Refer the customer to the Owner Guide for information about the limitations of FM radio performance.

Internal diagnostic examination of the integrated control panel, rear chassis unit and audio compact disc player should be left to the authorized radio service center. However, the automotive technician should be able to analyze and isolate radio reception conditions to the proper area or component causing the condition. All radio conditions can be isolated to one of six general areas:
  • antenna system
  • integrated control unit
  • radio speaker system
  • radio noise suppression equipment
  • rear chassis unit
  • audio communications protocol network
Retrieving Diagnostic Trouble Codes (DTCs)
Using Audio System On-Board Diagnostics
The audio system has on-board diagnostic capabilities and is equipped to check for every component available in the system even if this specific vehicle is not equipped with all components. A Diagnostic Trouble Code (DTC) will be set for the missing components. These DTCs can be ignored if the vehicle is not equipped with these components. The battery must be fully charged for proper audio system operation. The ignition switch must be in the RUN or ACC position. Turn the system on, tune in a strong AM station and verify good reception. After an AM station is checked, tune in a strong FM station. The system is now ready to enter the diagnostic mode. Diagnostic Mode:
NOTE: Battery must be fully charged for proper audio system operation and self-test.

Enter Diagnostics mode by pressing SEEK DOWN button first and then pre-set button 3. Hold both buttons for five seconds. This will suspend all normal radio functions, retain the previously selected frequency and display DIAG.
  1. NOTE: To perform diagnostics, press the appropriate buttons as instructed.

    SYSTEM CONFIGURATION SELF-TEST:
    Press pre-set button 1. This will check for connection of all possible devices and log the diagnostic trouble codes for any device that does not respond. The display will flash SELF while gathering the diagnostic trouble codes, then stop flashing when complete. To exit System Configuration Self-test, press pre-set button 1 again. To retrieve diagnostic trouble codes, press the TUNE UP button. This will display the diagnostic trouble codes if any exist. Continued pressing of the TUNE UP button will display the next diagnostic trouble code. Record codes and refer to the following table. To exit the Retrieval Mode, press pre-set button 1.


    CONFIGURATION SELF-TEST CODES Code Description 0 No diagnostic trouble codes logged 1 No response from rear chassis unit 2 No response from tape deck 3 No response from bezel microprocessor 4 No response from compact disc player 5 No response from steering wheel controls 6 No response from rear seat control 7 No response from remote climate control 8 No response from navigation module 9 Read Only Memory verification failed
    Remember, system configuration will test for all possible equipment connections. Inspect the vehicle to determine actual equipment installed.
  1. Integrated control panel display test:
    To enter the integrated control panel display test, press pre-set button 5. This check will light all segments in the integrated control panel. The system will automatically exit this test after five seconds.
  1. Integrated control panel and rear chassis unit identification:
    To enter this test, press pre-set button 3. This test identifies the software level of the integrated control panel and rear chassis unit. The integrated control panel is tested first, followed by the rear chassis unit. The completed test will exit automatically. For code identification, refer to the following table. The display will have two sequences of five codes each. The first sequence is for the integrated control panel, the second sequence is for the rear chassis unit.


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    Item Part Number Description 1 — Product Type Code 2 — Product Variant Code 3 — Software Version Level 4 — Software Version Release 5 — Software Version Patch

Apr 23, 2009 | 1999 Ford Taurus

1 Answer

P1391 diagnostic code


the code is for intermitent loss of cam or crank sensor...one of the sensors maybe going bad or i have run into the wiring where it comes over the rear of the engine chaffing at the valve cover causing the loss of the signal

Nov 16, 2008 | Dodge Ram B250 Cars & Trucks

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