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Will not ignite properly

Diagnostic code blinks 4 times

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How do I light the pilot light? It is suppose light auto but will not . I had the valve turned off during the Summer mo. as I was using the air cond. The gas is on, elect. is on. I can turn the heater on and the small fan will come on and littlered light will blink 3 times but the heater will not ignite. How do I correct the problem?

Posted on Oct 24, 2008

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If you look at the wiring diagram in your furnace you will see that 4 blinks means there is either a blockage of air or your room air blower is not working. Check the air filter for any debris first. Then test the room air blower to see if it turns on and blows enough air prior to going out on code. Are all the dampers open both in the pipes as well as at the registers?

Posted on Oct 21, 2008

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1 Answer

Stuck in 4 wheel Drive High but no lights are lit


Hi Jimi , There are very specific diagnostic procedures to follow for diagnosing this system. First a good visual inspection of the transfer case an fluid level an wiring connections. The transfer case shift control module is equipped with the ability to store diagnostic information, which is useful to a technician in the event of module, component or wiring failures. This information can be retrieved from the transfer case shift control module by way of flash codes, which are displayed on the three transfer case shift control switch buttons. These buttons are located on the instrument panel to the right of the steering wheel Before obtaining DTCs, perform the following transfer case control module (TCCM) Self-Test.
TCCM Self-Test
  1. Observe the transfer case shift control switch indicators while turning the ignition switch to RUN. A properly operating system will flash all indicators and then will return to the current gear. If the system is operating normally, then proceed to Displaying Codes.
  2. If the TCCM failed the Self-Test, then test the following circuits.
  3. ?€¢
    Battery Positive Voltage (40 and 1640), and Ignition 3 Voltage for battery voltage


    ?€¢
    Ground Circuit for ground


    ?€¢
    Diagnostic enable circuit for an open or high resistance


    ?€¢
    Transfer case shift control switch connector

  4. If the above circuits are normal but the TCCM still fails the Self-Test, replace the TCCM. Refer to Transfer Case Shift Control Module Replacement .
DTC Displaying
  1. Turn OFF the ignition for 10 seconds.
  2. Connect PIN 13 on the data link cable (DLC) to a ground. The DLC is located in the cab under the instrument panel on the driver's side.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the transfer case shift control switch select buttons for flashing codes. Refer to Diagnostic Trouble Code (DTC) List .
Important: If the transfer case shift control switch buttons all blink only once and then stop, no fault codes are stored in the transfer case shift control module.
?€¢
When one DTC is stored in memory, that code will blink that number of times followed by a 3 second pause and then repeat.


?€¢
If more than one code is stored, the first code will blink, followed by a 3 second pause and then the second code will blink.


?€¢
This sequence will continue until PIN 13 on the DLC is no longer grounded.


?€¢
If the TCCM will not communicate the presence or absence of DTCs, test the above circuits in Self-Test Step 2. If the circuits are complete, then replace the TCCM. Refer to Transfer Case Shift Control Module Replacement .


Let me know if you have any codes , I have code definitions an procedures.

Feb 04, 2015 | 2003 GMC Sonoma Extended Cab

1 Answer

How to read check engine codes


The engine light lights up when you turn the ignition switch on, then goes off. After four seconds, if it comes on again and stays on, there is a present fault code. When it is an historical fault code, it comes on with ignition and goes off then comes on and goes off again. I believe in like 4 second intervals. An historical code will not be removed until a cycle of 50 ignition on/of intervals has passed. In other words, the engine light will continue to light two times when ignition switch is turned on, after 50 on/off cycles have passed the historical codes will no longer affect the engine light when starting.
If you will hold the odometer button on the side of the console down, and turn the ignition on and off, three times I think, waiting for the fuel pump to stop before turning the ignition switch to the off position, and one second until you turn it on again, the third time holding the odometer button down until the engine light begins to blink it will begin to blink in a fast sequence showing the fault codes will follow.
First indication of fault code display is rapidly blinking engine light. After that count the number of times the engine light lights up. There will be a brief pause between digits. If there are multiple codes stored, the rapid blinking will separate each. Once the fault codes begin to repeat, you have gone through all stored codes.
Tips: Have a pencil and paper ready.
Maybe ask a friend to help out. Sometimes a second pair of eyes can be good.
Go through a couple of cycles, so that you are sure you haven't missed any codes.


Method #2:

1. Remove right side saddlebag and side cover if so equipped. Remove protective plug from data link connector. Other models will be under the seat.
2. To activate the diagnostic feature,follow these steps.
a. Create diagnostic test wire or use a female spade clip which will bridge the two terminals perfectly.
b. Install diagnostic test wire/clip across Terminals 1 and 2 on the data link connector, they are marked.
c. Turn Ignition/Light Key Switch to IGNITION and wait approximately 10 seconds (4 seconds lamp ON, 6 seconds lamp OFF) for check engine lamp to start flashing.
3. All trouble codes are sent out as a series of flashes. To retrieve the first digit of the trouble code simply observe the number of times the lamp flashes.
a. The lamp will then flash one or more times to indicate the first digit of the trouble code.
b. The length of time the lamp is illuminated and the length of time in which it is off are each about 0.5 second in duration.
4. The second digit follows:
a. Following the transmission of the first digit, there is a 1.2 second pause in which the lamp is off.
b. The lamp will then flash one or more times to indicate the second digit of the trouble code. Count the number of times the lamp flashes to retrieve the second digit.
5. If more than one trouble code is sent:
a. Following transmission of the second digit of the first code, there is a 3 second pause in which the lamp is off.
b. Once all codes have been sent, the data string is repeated. When you have recorded the same trouble code twice, it is an indication that the transmission has been restarted and that all trouble codes have been retrieved.
IMPORTANT NOTE ..If diagnostic test wire is installed across Pins 1 and 2 on connector in lieu of a Scanalyzer, the ECM is placed in a diagnostic test mode and the engine will start. The test wire must be removed from the data connector and the ignition switch turned OFF or the check engine lamp will continue to flash codes. A historic trouble code resides in the memory of the ECM until the code is cleared by use of the Scanalyzer or a total of 50 trips has elapsed. A "trip" consists of a start and run cycle, the run cycle lasting at least 30 seconds. After the 50 trip retention period, the trouble code is automatically erased from memory (that is, assuming no subsequent faults of the same type are detected in that period). The numbers after the 'historic' or 'current' is the speedo code number, but without the electrical diagnostics manual you're not going to know what they mean.


After retrieving codes, repost the codes for meaning (too many codes to type them all here)

Mar 05, 2014 | 2000 Harley Davidson FXST Softail Standard

1 Answer

I have a 91 Buick Century that dies after a few minutes.


Fuel or ignition problem? Right after it dies, check for spark at a plug. A bad coil will often work till it's warmed up, then fail. If you still have ignition spark after it dies, or if it starts right up again, then it's something else.
Check the fuel pressure to make sure it's at proper pressure. Also scan the computer for any trouble codes that are related. It's easy on your car if you understand how the flashing light translates to two-digit number codes. Use a wire or paperclip to bridge terminals A and B of the diagnostic test connector protruding out from bottom of dash. It's a 12 pin connector. A and B are the two upper right terminals on it. Now turn key on and the check engine light will begin blinking the codes. Code 12 is diagnostic mode-one blink, pause, pause,blink, pause blink. See? 22 would be blink, pause, blink, pause, pause, blink, pause, blink. See? 33 would be three blinks, short pause and then 3 rapid blinks. (I"m going blink crazy!) Well, get the codes-they are two digit codes, and will keep repeating, lower numbers first and in succession, over and over while in diagnostic mode. Maybe an idle sensor fault will show up.
Good luck.

Dec 06, 2011 | Cars & Trucks

1 Answer

My 86 toyota 4runner don't have a diagnostic plug


Please check the locations indicated below and follow procedures to extract the code. Send us the code for repair advice or replay with any questions.

DIAGNOSTIC CODESDiagnosis codes are held in memory and may be displayed by grounding the proper terminals at the diagnostic connector or check connector. The system should be interrogated for stored codes before any disconnection of the battery cables; once disconnected, the stored codes will be lost. Certain conditions must be met before the codes will be transmitted from the ECU. The initial conditions are:


Engine at normal operating temperature Battery voltage 11 volts or above Throttle fully closed (IDL points engaged) Transmission in N All accessories and electrical loads OFF
If any of the initial conditions are not met, the ECU will note a problem and display a switch condition code when the diagnostic circuit is grounded.
Diagnostic Connector Locations
See Figure 1
On all equipped vehicles the check connector (near the ignition coil) or diagnostic connector are located under the hood in the engine area on the shock tower (passenger side) or near the junction or relay block (driver's side). A small plastic cap covers the check connector terminals and hinged plastic cap covers the diagnostic connector. Each terminal is mark inside the diagnostic cap cover for proper identification.


jturcotte_2383.gif

Fig. Fig. 1: Check connector (lower view) and diagnostic connector (upper view)
Reading Stored Codes

  1. Check that the initial conditions are met.
  2. Turn the ignition switch ON but do not start the engine.
  3. At the diagnostic connector or check connector, use a jumper wire to connect terminals T and E 1 .
  4. Observe the CHECK ENGINE warning lamp on the dashboard; read the code(s) based on the number and rate of flashes.
  5. If the system is operating normally, with no codes stored, the warning lamp will flash on/off in a constant, unchanging pattern. This is the System Normal signal; the ECU is acknowledging the request for codes but has nothing to report.
  6. If malfunction codes are stored, the light will blink every 1 / 2 -second. The first number of blinks will indicate the first digit of a 2-digit code. After a 1 1 / 2 second pause, the second digit will be transmitted. If there is more than one code stored, they will be separated by a 2 1 / 2 -second pause. After all stored codes have been transmitted, the cycle will begin again after a 4 1 / 2 second pause. The codes will continuously transmit until the jumper wire is disconnected. Even when transmission has stopped, the codes remain in memory until the memory is cleared.

If more than one code is stored, the codes will be transmitted in numerical order from lowest to highest. The order of the codes does not indicate the order of fault occurrence.
  1. Record the codes as they are received.
  2. Disconnect the diagnostic jumper; switch the ignition OFF .
jturcotte_2384.gif



Clearing Stored Codes

Stored codes will remain in memory until cleared. The correct method of clearing codes is to turn the ignition switch OFF , then remove the EFI 15A fuse for at least 30 seconds. The time required will be longer in cold weather.
Disconnecting the negative battery cable will also clear the memory but is not recommended due to other on-board memories being cleared as well. Once the system power is restored, re-check for stored codes. Only the System Normal indication should be present. If any other code is stored, the clearing procedure must be repeated or the old code will be stored with any new ones.
After repairs, it is recommended to clear the memory before test driving the vehicle. Upon returning from the drive, interrogate the memory; if the original code is again present, the repair was unsuccessful.

Oct 07, 2011 | Cars & Trucks

1 Answer

D4 light on no matter what gear i'm in. 95 Honda Accord LX 4-cylinder. Already replaced solinoid, speedometer, fan,


The D4 light is coming on to tell you that there is one or more fault codes set in your transmission control module. The only way to retrieve codes on the 1995 models is to read "Flash Codes" output by the D4 light. (See instructions below)

RETRIEVING FLASH CODES USING THE D4 LIGHT
If fault codes are present, the D4 light will "blink" when the ignition is turned to the RUN position and will remain on at all times when the engine is running.
To retrieve the flash codes, turn the ignition switch off.
Install a jumper wire between the service check connector terminals.
The service check connector is a gray, 2-pin connector located on the PCM/TCM cover under the passenger side of the instrument panel. (See picture below)

CAUTION: DO NOT use the 3-pin located next to the service check connector.

Installing the jumper will place the PCM/TCM in diagnostic test mode.
Turn the ignition to the RUN position. Codes will be output by blinking the D4 light.
Note the number of blinks from the D4 light. A short blink indicates a single digit flash code. A long blink equals 10 short blinks. For instance one short blink indicates code 1. One long blink and four short blinks indicates code 14. If there is more than one fault code, they will be output one at a time from the lowest numbered code to the highest numbered code. It is recommended that you read the code or codes several times to make sure that you are reading it correctly.

Once you have retrieved the fault code(s) re-post your question and include the information for what codes you have and someone can then help you locate the cause of the problem.

May 22, 2011 | Honda Accord Cars & Trucks

1 Answer

Flashing airbag light 4 blinks 6 blinks


This is a code 46 LH Crash Sensor - Not Mounted to Vehicle Properly. Often there is a poor contact on one of the wiring connectors. Some of the problems can happen from a poor connection where everything connects under the drivers side seat.
Here is a list of codes for the airbag light issues.

Air Bag Fault Code Table

AIR BAG DIAGNOSTIC MONITOR FAULT CODE PRIORITY TABLE

Priority Code Component/Fault Description

Highest -- No Air Bag Lamp - Inoperative Lamp Circuit or No Ignition Voltage to Diagnostic Monitor

' -- Continuous Air Bag Lamp - Diagnostic Monitor Disconnected or Inoperative

' 12 Low Battery Voltage

' 13 Air Bag Circuit or Crash Sensor Circuit - Shorted to Ground

' 21 Safing Sensor - Not Mounted on Vehicle Properly

' 22 Safing Sensor Output Circuit - Shorted to Battery Voltage

' 23 Safing Sensor Input Feed/Return Circuit Open

' 24 Open in Circuit 944B or Low Resistance in Crash Sensor(s)

' 32 Driver Side Air Bag/Safing Sensor Circuit - High Resistance or Open

' 33 Pin 7 Not Grounded at Diagnostic Monitor

' 34 Driver Side Air Bag/Safing Sensor Circuit - Low Resistance or Shorted

' 35 Low Resistance Across Pins 8 and 9 at Diagnostic Monitor

' 41 Crash Sensor Circuit - High Resistance or Open

' 44 RH Crash Sensor - Not Mounted to Vehicle Properly

' 45 Center Radiator Crash Sensor - Not Mounted to Vehicle Properly

' 46 LH Crash Sensor - Not Mounted to Vehicle Properly

' 51 Diagnostic Monitor Internal Thermal Fuse - Blown and Short to Ground No Longer Exists

' 52 Backup Power Supply - Voltage Boost Fault

' 53 Internal Diagnostic Monitor Fault

Lowest -- Rapid Continuous Flashing of Air Bag Lamp - All Crash Sensors Disconnected

Hope this helps...

May 05, 2011 | 2003 Ford Escape

1 Answer

The gauge in my yamaha fz6 2006 is blinking, the manual says there is a electrical circuit problem. I check all the ligths nad fuses and they seem in order, what else could it be?


I believe you count the amount of blinks to read the codes. First blinks are first number, and second set of blinks are second number. Chaz Moto DC

Fault Code: 12
Symptom: No normal signals are received from the crankshaft position sensor.

Fault Code: 13

Symptom: Intake air pressure sensor-open or short circuit detected.
Fault Code: 14
Diagnostic Code: 03
Symptom: Faulty intake air pressure sensor pipe system
Fault Code: 15
Diagnostic Code: 01
Symptom: Throttle position sensor-open or short circuit detected.
Fault Code: 16
Diagnostic Code: 01
Symptom: A stuck throttle position sensor is detected.
Fault Code: 19
Diagnostic Code: 20
Symptom: Open circuit in the input line of ECU No4 terminal is detected when the start switch is pressed.
Fault Code: 21
Diagnostic Code: 06
Symptom: Coolant temperature sensor-open or short circuit detected.
Probable cause of malfunction: Open or short circuit in wiring harness.
Defective coolant temperature sensor.
Malfunction in ECU.
Improperly installed sensor.
Fault Code: 22
Diagnostic Code: 05
Symptom: Intake air temperature sensor-open or short circuit detected.
Probable cause of malfunction: Open or short circuit in wiring harness.
Defective intake temperature sensor.
Malfunction in ECU.
Improperly installed sensor.
Fault Code: 30
Diagnostic Code: 08
Symptom: The motorcycle has overturned. Probable cause of malfunction:
Overturned.
Malfunction in ECU.
Fault Code: 33
Diagnostic Code: 30
Symptom: Open circuit is detected in the primary lead of the ignition coil (# 1, #4).
Probable cause of malfunction: Open circuit in wiring harness.
Malfunction in ignition coil.
Malfunction in ECU.
Malfunction in a component of ignition cut-off circuit system.
Fault Code: 34
Diagnostic Code: 31
Symptom: Open circuit is detected in the primary lead of the ignition coil (# 2, #3).
Probable cause of malfunction: Open circuit in wiring harness.
Malfunction in ignition coil.
Malfunction in ECU.
Malfunction in a component of ignition cut-off circuit system.
Fault Code: 41
Diagnostic Code: 08
Symptom: Lean angle cut-off switch-open or short circuit detected.
Probable cause of malfunction: Open or short circuit in wiring harness.
Defective lean angle cut-off switch.
Malfunction in ECU.
Fault Code: 42
Diagnostic Code: 07, 21
Symptom: No normal signals are received from the speed sensor; or, an open or
short circuit is detected in the neutral switch.
Probable cause of malfunction: Open or short circuit in wiring harness.
Defective speed sensor.
Malfunction in vehicle speed sensor detected unit.
Defective neutral switch.
Malfunction in the engine side of the neutral switch.
Malfunction in ECU.
Fault Code: 43
Diagnostic Code: 09
Symptom: Supply power to the injector and fuel pump is not normal
Probable cause of malfunction: Open circuit in wiring harness. (red/blue line or blue/yellow line)
Malfunction in ECU.
Fault Code: 44
Diagnostic Code: 60
Symptom: An error is detected while reading or writing on EEPROM.
Probable cause of malfunction: Malfunction in ECU. (The CO adjustment value is not properly written on or read from the internal memory).
Fault Code: 46
Diagnostic Code: --
Symptom: Power supply to the FI system is not normal. Probable cause of malfunction:
Malfunction in "CHARGING SYSTEM".
Fault code: 50
Diagnostic Code: --
Symptom: Faulty ECU memory. When this malfunction is detected, the code
number might not appear on the meter.
Probable cause of malfunction: Malfunction in ECU. (The program and data are not
properly written on or read from the internal memory.)
Fault code: Er-1
Diagnostic Code: --
Symptom: No signals are received from the ECU.
Probable cause of malfunction: Open or short circuit in wiring sub lead.
Malfunction in meter.
Malfunction in ECU.
Fault code: Er-2
Diagnostic Code: --
Symptom: No signals are received from the ECU within the specified duration.
Probable cause of malfunction: Improper connection in wiring sub lead.
Malfunction in meter.
Malfunction in ECU.
Fault code: Er-3
Diagnostic Code: --
Symptom: Data from the ECU cannot be received correctly.
Probable cause of malfunction: Improper connection in wiring sub lead.
Malfunction in meter.
Malfunction in ECU.
Fault code: Er-4
Diagnostic Code: --
Symptom: Non-registered data has been received from the meter.
Probable cause of malfunction: Improper connection in wiring sub lead.
Malfunction in meter.
Malfunction in ECU.

Feb 23, 2010 | 2005 Yamaha FZ6

1 Answer

It starts then dies.


put your key in the ignition, turn it on and then off 3 times withing 5 seconds, do not actually start the vehicle doing this. after doing this the check engine light will blink a diagnostic code in sequence. a slight pause between blinking is the indictaion that the next number is going to blink, some codes will look like this, blinks 1 time and pause, blinks 4 times then no more. the code for this would be 14, you will then have to look up the engine codes for your make and model of vehicle to see what the computer in your vehicle has to say what is wrong. when you retrieve the code write down what the code says and then call a mechanic to get further information on how easy it is to fix.

Sep 13, 2009 | 1995 Nissan Maxima

1 Answer

Diagnostic Troubleshooting Codes for 1996 Chrysler Sebring Cvtble


FIRST YOU TURN IGNITION SWITCH ON WITH ENGINE OFF.LOOK AT MIL LIGHT IT SHOULD COME ON 3 SECONDS THEN GO OFF IT NOT THEN YOU GOT BURN OUT BULB OR A CIRCUIT PROBLEM.IF ALL IS WELL. ATTEMPT TO START ENGINE.TURN OFF IGNITION. WITH OUT STARTING ENGINE.TURN IGNITION ON OFF ON OFF AND WITHIN 5 SECONDS RECORD 2 DIGIT DIAGNOSTIC TROUBLE CODES.DISPLAYED BY FLASHING MIL LIGHT.YOUR MIL FLASHES WILL BE YOUR CODE LIKE THE MIL LIGHT FLASHES 5 TIMES THEN PAUSE FLASHES 3 TIMES THAT CODE 53 THAT YOUR CODE.IT LIKE MORSE CODE.WHEN DONE TURN OFF IGNITION SWITCH.GO TO AUTO ZONE OR ADVANCE AUTO GET HAYNES COMPUTER CODE BOOK. TO GET CODE MEANING OR WHAT SENSOR GONE BAD.HOPE THIS CAN BE SOME HELP.

Jul 27, 2009 | 1996 Chrysler Sebring

1 Answer

TV cant be switch on, RED LED diagnostic Blinks .. 3 times... then 4 times. Please advise probable cause and send sTV hcematic diagram.


Hi, this is main board failure and you will need to replace this vital board. you power board is fine but, it is unable to send a proper current through the main mother board due to the damage at hand.

May 21, 2009 | Sony KV-29FX30 29" TV

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