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Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0135 To DTC P0420 >> DTC P0366 >> Circuit Description

Circuit Description

The exhaust camshaft position (CMP) sensor produces a 5X plus a sync signal for each revolution of the exhaust camshaft. These signals are for control of sequential fuel injection and for exhaust camshaft phaser control. The CMP is connected directly to the powertrain control module (PCM) and consists of the following circuits:

If the PCM receives an incorrect number of CMP sensor pulses in a given number of crankshaft position (CKP) sensor pulses, DTC P0366 will set.

The PCM runs 2 tests to diagnose the CMP sensor performance system. It uses a Near Engine Start, CMP fast event based test and an After Engine Start, CMP slow event based test. The Near Engine Start, CMP fast event based, test runs first upon or during start-up. If the test fails, it will set DTC P0366. If the test passes it will initiate the After Engine Start, CMP slow event based, test and runs this test continuously unless it detects an error and sets DTC P0366.

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