No spark at spark plug

Tiny
JDANIELS70
  • MEMBER
  • 1994 CHEVROLET BERETTA
  • 4 CYL
  • FWD
  • 129,756 MILES
94 beretta 2.2 4 cyl. No spark at spark plug
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Tuesday, December 28th, 2010 AT 12:55 AM

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Tiny
KHLOW2008
  • EXPERT
Ignition Coil Power Source
Turn ignition on. Check Pink/Black or Pink wire of ignition module for battery voltage. If battery voltage is not present, check ignition or PCM fuse. If fuse is not blown, check for open between fuse and ignition module.

Crankshaft Sensor Pick-Up Coil Short & Resistance Checks
1. Set DVOM on 2000-ohm scale position. Connect DVOM leads to crank angle sensor connector, located on side of engine block. Turn ignition off. Disconnect ignition module connectors. Measure resistance between crankshaft sensor terminals at ignition module connector.

2. Crankshaft sensor resistance should be between 800-1200 ohms. If resistance is not as specified, replace sensor. If sensor is within specification, go to next step.

3. With sensor installed in block, connect one ohmmeter lead to either sensor terminal at ignition module (PCM terminal D9 or D10 on 2.0L). Touch other lead of ohmmeter to engine block. No continuity should exist. If continuity exists, sensor or harness is shorted to ground and must be repaired or replaced.

Crankshaft Sensor Output Signal
Set DVOM on 2-volt AC scale. Connect voltmeter leads to crankshaft sensor installed in side of engine block. Crank engine and observe voltmeter reading. Crank angle sensor should generate a voltage signal of about.05 volt at slow cranking speed to greater than.1 volt (100 mV) at high cranking speed. With engine running, voltage signal will be much greater.
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Sunday, January 2nd, 2011 AT 12:53 PM

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