Question about 1998 Chevrolet K1500

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Ignition control module what would cause failures

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Age ! if you have replaced it and it went bad again possibly a bad replacement part. When you install one of these units you must use the special grease detween the unit and the mounting. Heat will destroy this unit.

Posted on May 10, 2014

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1 Answer

What would cause it to shut off while driving.


cam/crank position sensor/s problem
broken wires to the sensors,
problem ignition control module
ECM failure
immobilizer problem
faulty ignition switch ( GMC recall for 12 year problem)
broken timing belt / chain
bad fuel pump operation
these are some of the possible causes

Sep 15, 2016 | Cars & Trucks

1 Answer

Where is fuel pump harness on a 2000 escalade


DTC P1351 Ignition Coil Control Circuit High Voltage
The enhanced ignition system uses the crankshaft position (CKP) sensor in order to provide a timing input to the control module. Ignition control (IC) spark timing for each cylinder is based on this input. The control module provides the ignition timing signal to the ignition control module (ICM) to control the ignition coil. Each timing pulse detected by the ICM allows it to energize the ignition coil. A large secondary ignition voltage is induced in the secondary coil by the primary coil. This high voltage is switched to the correct spark plug by the distributor.
This diagnostic trouble code (DTC) will set if the VCM- (vehicle control module ) detects an unusually high voltage on the ignition timing signal circuit.
Diagnostic Aids
Intermittent test -- If the connections and the harness check OK, monitor a digital voltmeter connected between VCM terminal C3 pin 9 and C4 pin 18 while moving related connectors and wiring harness. If the failure is induced, the voltage reading will change. This may help to isolate the location of the malfunction.
An intermittent may be caused by any of the following conditions:
?€¢
A poor connection

?€¢
Rubbed through wire insulation

?€¢
A broken wire inside the insulation
Thoroughly check any circuitry that is suspected of causing the intermittent complaint. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
If a repair is necessary, refer to Wiring Repairs or Connector Repairs in Wiring Systems.
Check out this guy's video on GM fuel pump electrical circuit diagnosis !

GM Fuel Pump Relay Testing

Apr 21, 2016 | Cars & Trucks

2 Answers

The 3 and 6 is not fireing on coil pack


POSIBLE CAUSE O YOU NEED A NEW COIL PACK OR A IGNITION MODULE

Sep 02, 2014 | 2000 Buick LeSabre

1 Answer

Wat does code po320 means f150 2002


Here is the general definition.

P0320 FORD Description Ignition failure sensor is used to check whether the spark ignition is occurred correctly or not and also used to tachometer drive. The sensor monitors the voltage difference between a resistance which is on the battery circuit for ignition coil. When the ignition coil works properly, the electric current through the resistance is detected as voltage drop. This is confirmed for every ignition event with the crankshaft sensor and the camshaft sensor. If Engine Control Module (ECM) detects a malfunction, no ignition is possible, so the engine would not start. If there is no ignition signal for a predetermined cycle for one or two ignition coils, an ignition coil circuit failure exists.
Possible causes - Faulty Ignition/Distributor engine speed sensor
- Faulty Crankshaft Position sensor
- Ignition/Distributor engine speed sensor harness is open or shorted
- Ignition/Distributor engine speed sensor circuit poor electrical connection
- Low battery charge
- Faulty Engine Control Module (ECM)

Read more: http://engine-codes.com/p0320_ford.html#ixzz2Lw6dG98q

Feb 25, 2013 | Cars & Trucks

1 Answer

What does acam or crankshaft sensor do


  • The crankshaft position sensor identifies position of the crankshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM)
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.
  • The camshaft position sensor identifies position of the camshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM)
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown
  • Jul 24, 2012 | Cars & Trucks

    1 Answer

    Gmc 98 sonoma pu with p1336 error


    Hi there:

    The crankshaft position (CKP) system variation learn feature is used to calculate reference period errors caused by slight tolerance variations in the crankshaft, and the CKP sensors. The calculated error allows the powertrain control module (PCM) to accurately compensate for reference period variations. This enhances the ability of the PCM to detect misfire events over a wider range of engine speed and load.



    Conditions for Setting the DTC:
    The CKP system variation values are not stored in the PCM memory.




    Action Taken When the DTC Sets:
    The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
    The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.




    Conditions for Clearing the MIL/DTC:
    The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
    A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
    A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
    Clear the MIL and the DTC with a scan tool.
    Diagnostic Aids
    The CKP system variation values are not stored in the PCM memory after a learn procedure has been performed. If the actual CKP variation is not within the CKP system variation compensating values stored in the PCM, DTC P0300 may set.


    The CKP system variation learn procedure is also required when the following service procedures have been performed, regardless of whether DTC P1336 is set.
    An engine replacement
    A PCM replacement
    A harmonic balancer replacement
    A crankshaft replacement
    Any engine repairs which disturb the CKP sensor relationship
    If the CKP system variation learn procedure cannot be performed successfully, check for the following conditions and correct as necessary:
    A damaged reluctor wheel
    Excessive crankshaft runout
    A damaged crankshaft
    Interference in the signal circuit of the CKP sensor
    A coolant temperature that is not within the Conditions For Running the DTC




    The ignition switch is in the ON position until the battery is drained
    A PCM power disconnect with the ignition ON may erase the stored value and set the DTC P1336




    Hope this helps.

    May 25, 2012 | GMC Sonoma Cars & Trucks

    2 Answers

    What is ASD RELAY


    The power supplied to the fuel pump, ignition coil, fuel injectors, and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD); the idea is to shut off fuel pressure and the ignition systems when the key is turned off to prevent fires, dieseling, and other problems.



    The ASD relay is closed (allowing power to flow through it) when the ignition is first turned on. If the signal from the ignition reference is lost while the engine is running, or if the turbo boost pressure reaches and exceeds the over boost cut-off point, the logic module cuts power to the ASD, which in turn removes power from the fuel pump, ignition coil, injectors and those parts of the power module. This causes the engine to shut down.


    Failure of the automatic shutdown relay is often shown as inexplicable stalling or refusal to start.

    Mar 09, 2011 | Dodge Caravan Cars & Trucks

    1 Answer

    I have a 02 malibu throwing code po403 egr flow circuit malfunction i have replaced the egr sensor and checked that the intake tube that feeds the egr valve and it is not clogged. I don't know what to do...


    Read this it might helpCIRCUIT DESCRIPTION
    The powertrain control module (PCM) monitors the exhaust gas recirculation (EGR) valve pintle position input to ensure that the valve responds properly to commands from the PCM. The linear EGR valve is controlled by using an ignition positive driver and ground circuit within the PCM. The driver has the ability to detect an electrical malfunction in the ignition positive or ground circuit. If an electrical malfunction occurs, the driver signals the PCM to set this DTC.

    CONDITIONS FOR RUNNING THE DTC
    ^ The engine is cranking or running.
    ^ System voltage between 9-18 volts.

    CONDITIONS FOR SETTING THE DTC
    ^ The PCM detects an electrical malfunction in the EGR high control circuit or in the EGR low control circuit.
    ^ The condition is present for more than 20 seconds.

    ACTION TAKEN WHEN THE DTC SETS
    ^ The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
    ^ The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

    CONDITIONS FOR CLEARING THE MIL/DTC
    ^ The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
    ^ A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
    ^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
    ^ Clear the MIL and the DTC with a scan tool.

    TEST DESCRIPTION

    icon_article_img.gif View & Print Options63_gc02lnbdy_6-445.png&width=568&height=248&displaytype=display&imgrotation=&links=459,216,534,227;Steps 1-3
    icon_article_img.gif View & Print Options64_gc02lnbdy_6-446.png&width=560&height=619&displaytype=display&imgrotation=&links=351,576,433,589;Steps 4-15
    The numbers below refer to the step numbers on the diagnostic table.
    5. This step tests for an open in the ground circuit to the solenoid.
    6. This step tests if voltage is constantly being applied to the solenoid.

    Aug 14, 2010 | Chevrolet Malibu Cars & Trucks

    1 Answer

    Blowing ignition control 30amp fuse


    check for a shorted ignition module.there is a power transistor in that module,that if shorted will do it.
    number one cause of module failure is dried out heat sink grease.
    it is a special compound,and you MUST use it if you replace the module.it dissipates heat from the module to the mounting surface
    as well as fills in surface irregularities for a better contact

    May 15, 2009 | 1994 Jeep Grand Cherokee

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