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Randy
Randy, Auto Specialist
Category: Car
Satisfied Customers: 9266
Experience:  25 Years Experience Automotive Technology.
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P1326 on a 2000 isuzu rodeo v-6 what does this code mean

Customer Question

P1326 on a 2000 isuzu rodeo v-6 what does this code mean
Submitted: 5 years ago.
Category: Car
Expert:  Randy replied 5 years ago.

Randy :

HELLO!

Randy :

I will be glad to assist you!

Randy :

Give me a moment and I will get that info for you..

Randy :

DTC P1326: ION SENSING MODULE COMBUSTION QUALITY CIRCUITCircuit DescriptionPCM checks validity of signals used in ION Sensing Module at various engine operating conditions.Test is performed to evaluate Combustion Quality (CQ) signal pulse width if it is withinpredetermined range. If CQ signal pulse width is out of predetermined range, fail counter will beincremented. If failure counter exceeds calibration, test is complete and a failure record will bereported. If same counter threshold is reached before failure threshold, then test is complete and a passwill be reported. This test will detect an open or short in CQ line circuit, ION Sensing Module faultsand analog input faults in PCM. Conditions for setting DTC:Ignition • voltage is between 11 and 16 volts.• No Crank DTCs set.• No cylinder ID DTCs set.

Customer:

will this keep the engine from starting

Randy :

Yes.

Customer:

would this be something to change, i tried changing the crank sensor and that didnt help

Randy :

Do you have volt meter?

Customer:

yes

Randy :

I will give you diagnostic instructions, and diagram,..

Customer:

if this doesnt help to get it to start do you have any other suggestions

Randy :

Yes.

Randy :

Replace and Reprogram PCM

Customer:

what is the pcm

Randy :

Powertrain Control Module(computer that controls engine)

Customer:

thanks for your help

Randy :

Your Welcome!

Randy :

Turn ignition off. Disconnect ION Sensing Module and PCM harness connectors. Check wireharness between PCM and ION Sensing Module circuit at CQ line harness connector. . If problem is found, repair as necessary and retest system. Ifproblem is no found, go to next step.2.Disconnect ignition coil. Check ION Sensing Module wire harness between ignition coil and ION Sensing Module circuit at ION Sensing Module harness connector. If problem is found,repair as necessary and retest system. If problem is not present, go to next step.3.Check ignition coil, ignition coil circuit and ground circuit for poor connections. If problem ispresent, repair wiring harness as necessary and retest system. If problem is not present, go to next step. Replace ignition coil. Retest system. Go to next step.Check ION Sensing Module ground circuit for poor connection. If problem is present, repairwiring harness as necessary and retest system. If problem is still present, go to next step. Ifproblem is not present, go to step

Randy and 9 other Car Specialists are ready to help you
Expert:  Randy replied 5 years ago.
TEST
Randy and 9 other Car Specialists are ready to help you
Expert:  Randy replied 5 years ago.
Turn ignition off.
Disconnect ION Sensing Module and PCM harness connectors.
Check wire harness between PCM and ION Sensing Module circuit at CQ line harness connector.
If problem is found, repair as necessary and retest system.
If problem is not found, go to next step.
Disconnect ignition coil. Check ION Sensing Module wire harness between ignition coil and ION Sensing Module circuit at ION Sensing Module harness connector. If problem is found,repair as necessary and retest system. If problem is not present, go to next step.
Check ignition coil, ignition coil circuit and ground circuit for poor connections. If problem is present, repair wiring harness as necessary and retest system. If problem is not present, go to next step
Replace ignition coil. Retest system. Go to next step.Check ION Sensing Module ground circuit for poor connection. If problem is present, repair wiring harness as necessary and retest system. If problem is still present, go to next step.