DTC B1476/76: A/C Inverter Load System Malfunction [10/2014 - 10/2015]: Procedure

1. Using the Techstream, check if the CAN communication system is functioning normally.

   Result

   Result	Proceed to
   CAN DTCs are not output	A
   CAN DTCs are output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] )

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test.
5. Check the operation by referring to the table below.
   ENGINE AND ECT
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Control the Electric Cooling Fan	Control electric cooling fan motor	ON/OFF	Perform this test when the following conditions are met: Power switch is on (IG). Engine is stopped. Shift lever in P.

Result: 

NG 

GO TO COOLING FAN SYSTEM 

(Refer to ON-VEHICLE INSPECTION [10/2014 - ] )

Result: 

OK 

See step  3

1. Install a manifold gauge set (Refer to ON-VEHICLE INSPECTION [10/2014 - ] ).
2. Turn the power switch on (READY).
3. Read the manifold gauge pressure when the following conditions are established.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Prepare the vehicle according to the chart below.

      Item	Condition
      Vehicle doors	All fully open
      Temperature setting	MAX COLD
      Blower speed	HI
      A/C switch	On
      Recirculation/fresh switch	Recirculation (30 to 35°C (86 to 95°F))

      Standard Pressure

      Low pressure side 

      150 to 250 kPa (1.5 to 2.5 kgf/cm² , 22 to 36 psi)

      High pressure side 

      1370 to 1570 kPa (14.0 to 16.0 kgf/cm² , 199 to 228 psi)

Result: 

OK 

REPLACE COMPRESSOR WITH MOTOR ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

CHARGE REFRIGERANT 

(Refer to REPLACEMENT [10/2014 - ] )