P0563

Test 1 Through 4:

Symptom:
P0563 TRANSMISSION VOLTAGE HIGH

When Monitored and Set Condition:
P0563 TRANSMISSION VOLTAGE HIGH

When Monitored:
Continuously with Key On.

Set Condition:
The voltage on the Fused B(+) Circuit goes above 17.5 volts for 1 minute.

POSSIBLE CAUSES:
PCM CHARGING SYSTEM DTC PRESENT
TCM DEFECTIVE - FUSED B(+) SHORT
SUPPLY VOLTAGE WIRING TO TCM DAMAGED