code 18 - Right motor, faulty field drive

Possible causes:
- faulty right motor field circuit
- faulty H Bridge board
- faulty logic card
- faulty controller harness

This code is triggered when the logic detects over current for right FET

Checks
- disconnect battery plug
- check right motor field cable terminals, logic card CN2-13 terminal and H-Bridge board CN2-16 terminal for abnormality.
If unacceptable: correct or replace cables
If acceptable:
check continuity between following terminals - right motor field cables, and also check logic card CN2-13 and CN2-63 (Neg)
If shorted: correct or replace faulty circuit
If not shorted:
turn on key and confirm code 18 is displayed
confirm voltage between CN2-13 and CN2-63 (Neg) with multimeter
If about 15v replace logic card
if about 0v replace H-Bridge board.

hope this helps