Circuit Description

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport and 2002 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.

For PCM to detect engine misfire at higher engine speeds, PCM must know of any variation between CKP sensor pulses. Most variations are due to machining of crankshaft reluctor wheel although other sources of variation are also possible. Crankshaft position system variation learning procedure must be performed any time a change is made in CKP sensor to crankshaft relationship, or if PCM is replaced or reprogrammed. See TOOTH ERROR CORRECTION LEARN PROCEDURE under POWERTRAIN CONTROL MODULE. If for any reason PCM is unable to learn crankshaft position system variation values, or they are out of acceptable range DTC P1336 will be set. PCM that has not had the Crankshaft Position Sensor Tooth Error Correction procedure performed, after replacement of, or reprogramming of PCM will also cause DTC to store.

When DTC sets, PCM illuminates MIL as soon as fault was detected. PCM will store conditions present when DTC was set as freeze frame data in the FAILURE RECORDS data. A history DTC will be set.

PCM will turn MIL off on third consecutive trip cycle during which diagnostic runs and fault is no longer recognized. A history DTC P1336 will clear after 40 consecutive trip cycles during which diagnostic runs and fault is no longer recognized. DTC can be cleared with scan tool, or by disconnecting battery voltage feed to PCM.