Component Inspection

Engine

Engine Control - P0563 System Voltage High - Component Inspection

Component Inspection

1. Main relay inspection
(1) IG "OFF".
(2) Disconnect the main relay.
(3) Measure the resistance between terminal 3 and 5 of main relay.
(4) Measure the resistance between terminal 2 and 4 of main relay.

Specification : 70 - 120 Ohms








(5) Is the measured resistance within specification?





2. Check Alternator
(1) Key "OFF".
(2) Check the tension of the belt.
(3) Check Battery terminal and Alternator B+ terminal for looseness, corrosion or damage.
(4) Engine "ON".
(5) Operate electric equipments (Head lamp, Hot wire, etc).
(6) Accelerate engine to 2000 RPM and measure the battery voltage.

Specification : Approx. 12.5 V ~ 14.5 V

(7) Is the measured voltage within specification?






NOTE:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM. After testing PCM on the vehicle, use this function to reuse the PCM on the others