8504472-8504466-8504496-8504502-8504460

Component Location

General Description

Alternator output and power demand of all electrical loads and systems must be matched to each other as ideally as possible so that the entire system is reliable and trouble-free in operation. The ECM monitors alternator output deviation from the signal of the FR terminal of the alternator when the engine is running.

DTC Description

P0620 is set when alternator control circuit is open or short at IG "ON"

DTC Detecting Condition

Item	Detecting Condition	Possible cause
DTC Strategy	• Signal Monitoring	• Control circuit is open or short • Poor connection or damaged harness
Enable Conditions	• IG "ON"
Threshold value	• Signal circuit is open or short
Diagnosis Time	• 1sec
MIL On Condition	• OFF

Diagnostic Circuit Diagram

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