A: Vehicle Battery Introduction

A: Pinpoint Tests

Note

Enter this pinpoint test only when directed here from the symptom flowcharts.

Remember

To prevent the replacement of good components, be aware that the following areas may be at fault:

• ignition switch
• battery cables
• generator
• voltage regulator
• ground straps

This pinpoint test is intended to diagnose only the following:

• powertrain control module (PCM) (12A650)
• harness circuits: SIG RTN, PWR GND, VPWR, KAPWR, IGNITION SWITCH, VREF
• battery positive voltage (B+)
• closed loop power relay

P0562 = System Voltage Low

P0563 = System Voltage High

A: Pinpoint Tests