Question about 1998 Chevrolet S-10 Pickup

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Re: diagram for location of ECM (Engine Control Module) not specifically identified

I checked your solution at the AutoZone site. Closest I come to the ECM is
the ICM (Ignition Control Module) at following link:

I'm not sure that the ICM is actually the ECM. The ECM (Engine Control Module), I believe, controls much more than the ignition timing but also fuel mixture at various RPMs and loads. I just can't seem to locate any schematics or specific information on the AutoZone site that describes the ECM. I need a diagram specific for the ECM since I am researching a reprogramming of the ECM by a company out of MT (PowerUpDiesel) that will set up my vehicle's ECM computer to provide the most efficient metering of fuel for increased power and fuel efficiency, specific to my vehicle (i.e., I provide my ECM with VIN # and tire size and they reprogram the module more accurately than the manufacturer's stock program).

I may need to just go down to my local Chevrolet dealer and get the information but thought that I could save myself a trip by getting advice from others here
RB in Anchorage

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Well i searched this link all got was this information hope it helps you :

Good luck..

Posted on Aug 18, 2008


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I have a 1997 chevy lumina with 3.1 engine. im not getting 12volts on connestor a on the left side of icm i checked all fuses they look good.could it be the ecm or the ignition switch thanks.

im not getting 12volts on connestor a on the left side of icm i ????? ICM - ignition control module ? Has only one power wire - Pink connector 2 - terminal B , Gets B+ voltage from fuse ELEK /IGN 15 amp fuse located in the under hood electrical center #1

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Where is the ecm located on a 92 Plymouth acclaim

NO ECM (engine control module). The skamatic does show PCM powertrain control module. Look under the hood, near the back of the motor. On the frame rail or the fire wall. Power Distribition center (PDC) should be ther as well.
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Mar 08, 2017 | 1992 Plymouth Acclaim

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Where is the location of the oil pressure sender on a 2014 awd Chevy Equinox?

The AWD Equinox has two model selections (LS & LT) and two 2.4L engine options (K2.4L FI DOHC & the K2.4L Flex Fuel DOHC.)

Information on the Equinox engines oil pressure senders location is difficult to find on line so all I can offer in the way of help is to say that It will be on the engine block connected to the ECM (engine Control Module) with a single TN/BK (Tan/Black) wire lead.

The Oil Pressure Sender is a distinct looking unit that is sold by Autozone and they provide pictures of the various makes which should help you identify the units location on your engine block.

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A dash light came on that looks like an engine with a downward arrow going through it. When it came on the car would not go over 35-40 mph.

REDUCED ENGINE POWER: Refer to Engine Control Module Description for the 5.3L engine or Engine Control Module Description for the 6.0L engine
The powertrain has electronic controls to reduce exhaust emissions while maintaining excellent driveability and fuel economy. The engine control module (ECM) is the control center of this system. The ECM monitors numerous engine and vehicle functions. The ECM constantly monitors the information from various sensors and other inputs, and controls the systems that affect vehicle performance and emissions. The ECM also performs the diagnostic tests on various parts of the system. The ECM can recognize operational problems and alert the driver via the malfunction indicator lamp (MIL). When the ECM detects a malfunction, the ECM stores a diagnostic trouble code (DTC). The problem area is identified by the particular DTC that is set. The control module supplies a buffered voltage to various sensors and switches. Review the components and wiring diagrams in order to determine which systems are controlled by the ECM.
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What to buy for code p0444 for hyundai tiburon gt 2.7

Felix: Code p0444 indicates a LARGE leak, which often indicates a loose gas cap. It could also be the wrong kind of gas cap. Since they are cheap, this is where I would start.
According to : On vehicles equipped with Evaporative emission control systems also known as EVAP, the engine draws in excessive fuel vapors from the gas tank that would otherwise be vented into the atmosphere.
The fuel vapor is routed through a vacuum line to the engine's intake and the purge valve/solenoid meters the desired amount of fuel vapors, controlled by the vehicles powertrain control module (PCM) or engine control module (ECM). The PCM/ECM monitors the voltage to the purge control valve and has detected no voltage change with the purge valve commanded on.
Note: This code is similar to codes P0443 and P0445.
Symptoms Symptoms of a P0444 trouble code may include:
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  • Slightly diminished fuel economy, this will not affect engine performance
Potential Causes Causes of this DTC may include:
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  • Engine wiring harness open circuit
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Diagnostic Steps for P0444 DTC Engine wiring harness - Check all connectors to ensure they are plugged in properly, look for loose or damaged wires. Typically the purge control valve is energized by the the battery and triggered on and off with a duty cycle through the PCM/ECM. Using the manufacturers wiring diagrams, identify which type of circuit being used and check for battery voltage presence with the key on/engine off at the power side of the control solenoid connector using a digital volt ohm meter (DVOM) set to the volts scale. If no battery voltage is present, trace the wiring back and determine the cause for voltage loss.
Test for continuity of the control side of the wire harness after disconnecting the plug from the control valve solenoid and the PCM wiring harness. Identify the correct wire at the PCM and control valve harness and check for continuity using the ohms scale on the DVOM, if excessive resistance is found, repair the circuit. If there is no continuity on the circuit, check all connections for damaged wiring, loose pins or disconnected harnesses and repair the circuit.
Purge control solenoid - Check for continuity at the purge control solenoid connector pins after removing the harness plug using the DVOM set to the ohms scale. Verify resistance is within manufacturers specifications. If no continuity is present, suspect the solenoid is internally open and replace the part with a known good unit.
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If you have to replace the purge valve, here is a picture of its location: tdisline_101.jpg




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Check the ICM -it can be tested at a parts store. If good, check the crank sensor.

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1 Answer

No power going to ignition control module, what would cause this?

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Fuse 38-the 30 amp fuse, the power feed for the run/crank relay- will be hot at all times. Fuses 9 and 11 will be hot in run or start. Check for power at the fuses. If the relay is not turning on and sending power to those fuses and to the ICM, and the ECM, (and to the injectors through fuse 16 - a 10 amp fuse), then work back to the ignition switch and the body control module. Wish I didn't have to say that, but yes, the BCM is between the ignition switch and the run/crank relay.
Good luck, Michael.

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