QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633 Introduction

QB: Pinpoint Tests See: QB: Diagnostic Trouble Code (DTC) P0603/P1605/P1633 - Pinpoint Test

Note

This Pinpoint Test is intended to diagnose the following:

• Battery terminal condition
• Keep Alive Power (KAPWR) wire routing
• Harness circuit: KAPWR
• Powertrain Control Module (PCM) (12A650)

Pinpoint Test Schematics and Connectors