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Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls - Self-Diagnostics - 3.2L & 3.5L) >> Diagnostic Trouble Code Identification >> DTC P1326: Ion Sensing Module Combustion Quality Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Amigo, and 2000 Honda Passport. However, it is still accessible from the selected car via links, so may be relevant.

PCM 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 within predetermined range. If CQ signal pulse width is out of predetermined range, fail counter will be incremented. If failure counter exceeds calibration, test is complete and a failure record will be reported. If same counter threshold is reached before failure threshold, then test is complete and a pass will be reported. This test will detect an open or short in CQ line circuit, ION Sensing Module faults and analog input faults in PCM. Conditions for setting DTC:

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