Engine-Codes.com | All About OBDII Engine Codes
Engine-Codes.com | All About OBDII Engine Codes

P1351 Chevrolet

P1351 Chevrolet - Ignition Coil Control Circuit High Voltage

PDF
P1351 Chevrolet Comments |  Add Comment
Possible causes
- Faulty Ignition Control Module
- Ignition Control Module harness is open or shorted
- Ignition Control Module circuit poor electrical connection
Help with Possible causes What does this mean?
When is the code detected?
The Powertrain Control Module (PCM) detects an open in the Ignition Control Module (ICM)
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1351 Chevrolet Description

The Ignition Control Module (ICM) has independent power and ground circuits. The circuits between the ICM and the Powertrain Control Module (PCM) consists of the following circuits:

-The ignition control (IC) timing signal

-The IC timing control

-The low resolution engine speed signal

-The medium resolution engine signal

-The camshaft position signal

-The low reference

The ICM sends 3X signals to the PCM, and controls the timing advance during engine cranking. The timing advance changes to PCM control after the following actions occur:

The PCM receives the second 3X signal

The PCM applies 5 volts to the ignition control (IC) timing signal circuit.

The ICM monitors the CKP sync signal when the engine is cranking. The CKP sync signal is passed from the CKP sensor to the ICM on the CKP sensor 2 signal circuit. The CKP sync signal is used to determine the correct cylinder pair and initiate the ignition coil firing sequence. The 18X reference pulses are passed from the CKP sensor to the ICM on the CKP sensor 1 circuit. The 18X reference pulses are used for fuel injection and ignition control. After the ICM receives both signals, the ICM passes the 18X and 3X reference signals to the PCM. The CMP and the CKP sensors share a 12 volt reference and low reference circuit. The CKP sensor consists of the following circuits:

-A 12 volt reference

-A low reference

-A CKP sensor 1 signal

-A CKP sensor 2 signal

Need more help?
Do you need more help with the P1351 Chevrolet code? ask a question to our users or search the top hand picked automotive forums for more information


(You will add more details to the question in the next step)
or
Repair Shops Around Your Area
  • 4x4 Land LLC 21 Views
    Yelp Rating on Engine-Codes.com
    14065 Willard Rd
    Chantilly, VA
    (703) 263-3307
  • A & G Car Care 18 Views
    4076 Walney Rd
    Chantilly, VA
    (703) 378-2005
  • A & J Automotive 23 Views
    4399 Henninger Ct Unit-H
    Centreville, VA
    (703) 817-9880
See More...
Need parts?
Need parts to fix this code? Search hundreds of stores at the same time and compare prices


Help Engine-Codes.com
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P1351 Chevrolet code? Have you replaced any parts?
Any information is appreciated. Thanks
Engine-Codes.com Comments Powered by Disqus
Google +
Engine Light ON?

The Engine-Codes.com ELM327 WiFi Car Diagnostic connects to your Android phone, iPhone, iPad, or Windows computer from your vehicle.
Ask OBDII Question