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1996 jeep cherokeecranks no spark on coil or distributer

Changed crank sensor still not resolved

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Test procedure:


1. Test powers and grounds at the Powertrain Control Module (PCM) on the C1 connector. Pins 2 and 22 are power, then check pins 31 and 32 for ground.

2. Next, test the 5 volt power supplies at pin 17 of the C1 connector and pin 31 of the C2 or middle connector for shorts to ground. Sensors on the circuit are the Camshaft Position (CMP) sensor, Crankshaft Position (CKP) sensor, Throttle Position Sensor (TPS), Manifold Absolute Pressure (MAP) sensor and Vehicle Speed Sensor (VSS).

3. Unplug the sensors on the 5 volt power supply, one at a time, while monitoring the 5 volt supply.

4. When the shorted sensor is unplugged, the PCM will wake up and scan tool communication will return.

5. The wiring harness could also be shorted to ground on one of the 5 volt power supply wires. Cut the wires at the PCM on pins C1-17 and just unplug the center connector. Then check for the 5 volts on the PCM of the connector or checking for any continuity to ground with the sensors unplugged at the PCM connector on C1-17 and C2-31 to check the wiring harness

Posted on Nov 17, 2013

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Posted on Jan 02, 2017

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  • 108 Answers

SOURCE: no spark at coil

check ignition pick-up coil and ignition module

Posted on Mar 31, 2009

  • 3 Answers

SOURCE: 91 jeep no spark

wd 40 your flywheel sensor plug

Posted on Sep 03, 2009

  • 181 Answers

SOURCE: 1996 jeep grand Cherokee 4.0L no power at coil got

TRY THE PLUGS ,CAP&ROTOR CHANGE THE FUEL FILTER,STILL NO START,THEN CHECK THE FUEL FILTER NOW, IT SHOULD BE WET,IF NOT THEN YOUR FUEL PUMP IS NOT WORKING

Posted on Oct 28, 2009

  • 1206 Answers

SOURCE: stalls and backfires 1997 jeep

you need to check the fuel pressure,and did you mean you replaced the distributor or just the rotor because inside the distributor is a pickup plate that some times causes this also 02 sensor can cause this.is your check engine light on if so go to chain auto parts store they usually read your codes for free.

Posted on Nov 26, 2010

  • 2 Answers

SOURCE: my 1996 4.3 liter gmc jimmy wont start and i have a weak spark, I changed the coil and driver along with the crank and cam sensor. I also changed the vcm and still it has a weak spark,

sounds like you have a bad ground somewhere check for corrosion

Posted on Sep 01, 2012

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