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Home >> Suzuki >> 2001 >> XL-7 Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 162 (Engine General Information & Diagnosis) >> Diagnostic Information and Procedures >> DTC P1510: ECM (PCM) Back-Up Power Supply Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Battery voltage is translated to 5 V in ECM (PCM) back-up circuit. The voltage is supplied to keep DTC memory, values that ECM (PCM) has learned to control engine, etc. in ECM (PCM) even when ignition switch is turned OFF.

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