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Home >> Toyota >> 2002 >> Sienna CE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P1600: Engine Control Module Batt Circuit >> Circuit Description
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Circuit Description

Constant battery voltage is supplied to BATT terminal at ECM as the back-up power source. DTC is set when open in back-up power source is detected. Possible causes are:

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