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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1300, DTC P1305, DTC P1310, DTC P1315, DTC P1320 Or DTC P1325 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.

This system is equipped with a Direct Ignition System (DIS), with a coil/ignitor devoted to each cylinder. Primary circuit is turned off when ECM delivers a signal to ignitor on IGT wire, causing ignition coil to fire spark plug. After delivering a command to turn off primary circuit on IGT wire, ECM monitors ignition confirmation signal on IGF circuit to ensure primary switching has occurred. If IGF signal is not input to ECM, ECM will stop fuel injection as a fail-safe function. DTC will set if there is no IGF signal to ECM with engine running. Possible causes are:

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