DTC    B1477/77    A/C Inverter Low Voltage Power Resource System Malfunction

for Preparation Click here


DESCRIPTION

The w/ motor compressor assembly monitors the controlling power voltage in the circuit. It stops the compressor circuit and outputs the DTC when the monitored voltage is outside the specified range.
The output DTC is memorized as previous trouble. The compressor control may not resume unless the ignition switch is turned off.

CAUTION:
  1. Wear electrically insulated gloves and pull out the service plug grip before inspection as procedures may require disconnecting high-voltage connectors. Be sure to carry the removed service plug grip because other workers may install it by mistake.
  2. Do not touch the high-voltage connectors or terminals for 5 minutes after the service plug grip is removed.


DTC No.
DTC Detecting Condition
Trouble Area
B1477/77
An open or short to ground in the inverter's controlling power voltage circuit.
w/ Motor compressor assembly

INSPECTION PROCEDURE

1.READ OUTPUT DTC (DTC B1477/77 IS OUTPUT AGAIN)

  1. Clear the DTC (Click here).

  1. Read the DTC (Click here).


Result:

Result
Proceed to
B1477/77 is output
A
B1477/77 is not output
B



B
REPLACE W/MOTOR COMPRESSOR ASSEMBLY
A

REPLACE W/MOTOR COMPRESSOR ASSEMBLY