NAVITAS TAC 2 Error Code And Troubleshooting Guide

INSTALLATION/ SERVICE MANUAL
4
TROUBLESHOOTING cont’d
FLASH
CODES
FLASH CODE
MESSAGE
DESCRIPTION SOLUTION HOW TO CHECK
2 - 4 Main
Solenoid
Current Fault
Solenoid coil
takes too much
current.
• Check for loose wires
or a short across
small terminals on
the solenoid.
• Replace main
solenoid.
• Check for loose wires. If there is a diode
across the solenoid check that it is not
shorted.
• Test solenoid by measuring resistance
across the small terminals of the
solenoid. The resistance should be
greater than 48 OHMS if it is a single
coil solenoid and greater than 20 OHMS
if it is a double coil solenoid.
2 - 4 Parking Brake
Solenoid
(Connected to
motor) Current
Fault
Solenoid coil
takes too much
current.
• Check for loose wires
or a short across
small terminals on
the solenoid.
• Replace main
solenoid.
• Check for loose wires. If there is a diode
across the solenoid check that it is not
shorted.
• Test solenoid by measuring resistance
across the small terminals of the
solenoid. The resistance should be
greater than 48 OHMS if it is a single
coil solenoid and greater than 20 OHMS
if it is a double coil solenoid.
2-8 Precharging
Too fast
1. Main solenoid
may be welded.
2. (External
Resistor Option
Only) Regen
resistor may
be incorrectly
connected to
battery side of
main solenoid.
• Check Main Solenoid
• Check resistor wiring
• 1. Turn Key off and place in Tow.
Measure voltage across large terminals
of solenoid. If you measure 0V, the
solenoid is welded
• 2a. Check Resistor wiring. Resistor
wires should go to switched side of
solenoid (controller side) and to the ‘R’
terminal on the controller.
• 2b. Turn Key off and place in Tow.
Disconnect controller ‘B+’ and ‘R’
cables. Make sure to isolate them with
electrical tape. Place in Run and turn
Key on check to see if error changes. If
error changes, turn key off and place in
Tow again. Then reconnect ‘B+’ cable
and repeat. If error does not reappear,
repeat process again and reconnect
resistor to ‘R’ terminal. If the problem
reappears, recheck the resistor wiring.

NAVITAS TAC 2 Specifications

General

Brand	NAVITAS
Model	TAC 2
Category	Controller
Language	English