Question about Chevrolet Tahoe

1 Answer

12 volts at terminal A and D of the ICM plug. Has good ground and on ICM plug and led flashes when cranked when connected to whatever terminal it is on the ICM plug.

1997 Tahoe crank no spark. replaced coil & icm. 12 volts to coil plug and signal to other wire in plug when cranked. p1351 code

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 11,488 Answers

Http://www.engine-codes.com/p1351_chevrolet.html

Posted on Jan 02, 2017

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have no spark on my 1999 chrysler sebring convertable


You will need at least a 12 volt test light to check the cam and crankshaft sensors. If either one is bad, the auto shut down relay will not ground the PCM. Remove the 4 pin electrical connector from the coil. one of the terminals is a 5 volt feed. Connect the light to that terminal and clip the other to ground. Turn the key to the on position. the light should flash once. If it does not flash the problem is in the ASD relay or its circuit. If it flashes once, try to start the engine. (don't worry, it can't start.) See if the light flashes during cranking or not. If not, return the key to off and then disconnect the crank sensor wire connector and try again. If it flashes as you crank the engine now, then the crank sensor is bad. If it does not flash during cranking then the cam sensor is probably bad. They are both easy to access and replace. The PCM could also be bad, but the cam/crank sensors are a more common problem. A repair manual is a cheap investment and could be helpful. Good luck.

Feb 28, 2015 | 1999 Chrysler Sebring LXi

1 Answer

Hello. I have a 1989 Nissan Pickup truck. It has 6 cylindars. It died recengtly while I was driving. I put fuel in as I though I had run out of gas. It started again and made it home. the next day it...


Could be the crankshaft sensor, wiring, or the coil/ignition module. Che k to see if there is power on the black/white coil wire when the key is turned to statt. If not, you have a loose wire from the ignition. If power is there, test the crank sensor.
Your crank sensor is in the distributer. Here is a test for it:

Diagnosis and Testing

For further Diagnosis and Testing of the Engine Concentrated Control System (ECCS) refer to Chapter 4 or 5 in this guide. Additional distributor and ignition coil information can be found in Chapter 3 of this guide.
CRANK ANGLE SENSOR When the ignition is ON and the main ECCS relay is activated, 12 volts is sent to the crank angle sensor LED. When a slit uncovers the photo diode and it detects the light, a 5 volt signal is sent to the ECU. The unit is easy to test but it must be removed from the engine. Refer to to test procedure below.
  1. First test the circuit to the sensor. Unplug the sensor connector, turn the ignition ON and check for 12 volts between one of the terminals and ground. The other terminals are return signals to the ECU, do not use them for voltmeter ground.
  2. Turn the ignition OFF , remove the distributor assembly and reconnect the plug to the crank angle sensor. Peel back the insulation sufficiently to connect a voltmeter to the wires. Ground the coil high tension wire.
  3. With the voltmeter connected to a good chassis ground, turn the ignitionON and slowly rotate the distributor. One of the return signal wires should have 5 volts off and on with each degree of rotation. The other should have 5 volts off and on with each 180 degrees (4 cyl.) or 120 degrees (6 cyl.) of rotation.
  4. Visually check the rotor plate for rust or damage.

If the sensor tests good, replace the coil.

Jul 30, 2017 | 1986 Nissan 200SX

1 Answer

Will the icm cause an po386 code


P0386 Crank position sensor "B" circuit range./performance. This is about performance.Is the sensor secured?How about sensor/rotor.The wiring? How about the air gap. Here is how the wiring works On cranksensor B you have three wire a yellow and a yellow and a light green. one of the yellow wire is ground,the other yellow ire is signal, the light green wire is 12 vlots or ignition voltage.when the key is on this is 12 volts.The 12 volts to the cranksensor is from the PCM and NOT the ICM3_20_2012_7_31_33_am.jpg

Mar 19, 2012 | Cars & Trucks

1 Answer

What is code P1351


Dec 30, 2011 | 2003 GMC Yukon Denali

1 Answer

1998 Ford Explorer, 4.0 SOHC No Spark. Engine will crank but it won't start. Replaced the Crankshaft Sensor, Coil Pack, & Spark Plugs. Still no spark. What next?


You are at thhe right trail what controls spark is coil pack crank sensor sparkplugs and plug wire but the most important is power . I mean 12 volt connections and ground This includes checking fuses you need a simple volt meter doesnt have to expensive or fancy just to pick up 12 volts let start with fuses in the engine juction box (there not mark to what it belongs to) make sure none are open. especially fuse 19 and 24 , next go to the crank sensor make sure the tabs are snuggly on now to the coil pack there is a red and light green wire this comes from ignition and feeds 12 volts at the coil pack measure that voltage is it 12 volts if not correct it this is from ignition switch ( you can make a tool that feed 12 volt with a wire and a fuse in series and attatch it to battery and the primary wire this is known as hot wire) next go to the ECM wiggle the wires see if that get a connection going if not go back to the ICM here are the wire you are to measure the tan light green, this is from ECM and it is pulsed it measure 5vlts to 0 volts switched then measure the tan orange the same thing 5 volts to zero,then tan white again 5vlts to zero. any one of these 5 to zero fails you fix is the ecm

Aug 21, 2011 | 1998 Ford Explorer

3 Answers

Hi I have an 87 s10 blazer 2.8L 4x4 and does not want to spray fuel into the throttle positioning sensor but fuel goes to and from it, I've checked the fuses replaced the fuel pump, it will fire with ether...


One side of the injector plug at each of the two injectors has 12 volts key on engine off.
The other side is grounded by the PCM computer to fire the injectors.
Put a test light across one of the injector plugs while cranking, Watch for flashing.

Jan 27, 2011 | 1987 Chevrolet Blazer

1 Answer

Hi, my BMW 318E46 won't start, it just clicks twice. We're getting over 12V from the battery and lights, radio etc so don't think its that. Maybe the solenoid switch, any other ideas? We want to check the...


This is typical of two more common problems; a weak battery (12 volts when not cranking the engine isn't enough) or corroded battery clamps or terminals. Probably #3 is a corroded starter or solenoid terminal.
While cranking, the starter draws from ~120-200 amperes of current and any even mildly corroded connection in the path will drop all of the voltage. 0.1 Ohms of resistance will drop nearly all of 12 volts when trying to start.
Check voltage across the battery terminals (not the clamps) while cranking, not without a good load drawing current. If you have less than 10 volts, most cars will not crank but only cause the solenoid to chatter (=clicks).
If you disconnect the battery for any reason, disconnect the negative (ground) cable FIRST to avoid accidentally contacting the positive terminal and ground with a tool which may melt and/or damage the battery.

Jan 18, 2011 | 1999 BMW 318 ti

1 Answer

Icm problems it will not start and i took the icm to autozone to have it tested and it tested good but the computer says it is the icm code p1376


check all your ground connections carefully as any backfeeds from bad connections ground or hot can throw these good old computers(ecu/ecm/whatever you want to call them) out of whack!!! easily,or back feed voltages to ground and wreak havoc on an automotive +12 system and shut them down

Dec 27, 2010 | 1998 Oldsmobile Aurora

2 Answers

2000 chevy blazer will crank but wont start


You may have a bad or weak fuel pump, Try spraying Carb cleaner down the throttle body and see if the engine starts, if it does. You could have a dirty fuel filter that will need to be replaced, or a faulty Fuel pump "sending unit" Before you go off replacing the fuel pump, check all the fuses in the fuse panel at the end of the dash, drivers side. The check the ground wire to the fuel pump on the frame, a bad ground will cause a weak fuel pump. Then check your fuel pressure at the shredder valve, you should have 62-65 PSI with the fuel pump energized "engine not running", anything less then 62PSI the injectors will not work. If your fuel system is running 100% and there is 62PSI at the shredder valve, move on to checking the ICM "Ignition Control Module"/ When the ICM goes bad you'll not get any power to the spark plugs and check also the connection to the coil to make sure it's working also. Good luck and keep me posted.

Feb 22, 2010 | 2000 Chevrolet Blazer

1 Answer

Not getting spar to wires


check ignition fuse.if okay.remove one of coils connectors using a test light .turn ignition key to on position .terminal 1 on the connector to coil is the first to left with the locking tab up. then remove the ignition module connector terminal 4 is 12 volt supply.4 terminal to the right with lock tab up.connect test light to ground.take the pointed end touch both the terminals for 12 volts with ignition on position.if getting 12 volts.you have PCM PROBLEMS OR CRANK POSITION SENSOR..IF GETTING NO 12 VOLTS YOU GOT A BLOWN FUSE OR GROUNDING PROBLEMS.

May 25, 2009 | 1999 GMC Yukon

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

17 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8210 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...