DTC B1476/76: A/C Inverter Load System Malfunction [11/2016 - ]: Procedure

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

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ]

   Result

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

Result:  2

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] 

Result:  1

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.

   Powertrain > Engine and ECT > Active Test 

   Tester Display	Measurement Item	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 on (IG) Engine stopped Shift lever in P

   Powertrain > Engine and ECT > Active Test 

   Tester Display
   Control the Electric Cooling Fan

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

GO TO COOLING FAN SYSTEM. Refer to  ON-VEHICLE INSPECTION [11/2016 - ] 

Result:  1

OK 

See step  3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Install a manifold gauge set.

   Refer to ON-VEHICLE INSPECTION [02/2014 - ]

2. Turn the power switch on (READY).
3. Read the manifold gauge pressure when the following conditions are met.
   1. Prepare the vehicle according to the table below.
      MEASUREMENT CONDITION:
      
      

      Item	Condition
      Vehicle doors	Fully open
      Temperature setting	MAX COLD
      Blower speed	HI
      A/C switch	On
      Recirculation/fresh switch	RECIRCULATION
      Interior temperature	25 to 35°C (77 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 to 16 kgf/cm² , 199 to 228 psi)

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [11/2016 - ] 

Result:  2

NG 

CHARGE REFRIGERANT. Refer to  REPLACEMENT [02/2014 - ]