T-SB-0086-14

®TOYOTA
Technical Service B ullet in
August 11 , 2014
T-SB-0086-14
Intermittent Poor A/C Cooling at Idle
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
Market
Toyota Supports ~
ASE Certification~
USA
Applicability
YEAR(S)
MODEL(S)
2014
Corolla
ADDITIONAL INFORMATION
Introduct ion
Some 2014 model year Corolla vehicles may exhibit a condition where the A/C system blows warm
air intermittently while the vehicle is at idle. An updated A/C compressor is available to address
this condition.
Prod uction Change Information
T his bulletin applies to vehicles produced BEFORE the Production Change Effective V INs
shown below.
MODEL
Corolla
PLANT
PRODUCTION CHANGE EFFECTIVE VIN
TMMC
2T1 BURHE#EC217552
TMMMS
5YFBURHE#EP171965
Parts Information
PART NUMBER
PREVIO US
NEW
88310-02850
88310-02851
PART NAME
QTY
Compressor, Assembly
1
Warra nty Info rm ati on
OP CODE
DESC RIPTION
TIME
OFP
T1
T2
AC1400
Compressor w/ Magnetic Clutch Assembly
2.9
88310-02850
72
50
APPLICABLE WARRANTY
• This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months
or 36,000 miles, whi chever occ urs first, from the vehicle's in-service date .
• Warranty application is limited to occurrence of the spec ified condition described in
th is bulletin .
© 2014 Toyota Motor Sales, USA
Page 1 of 4
@TOYOTA
T-SB-0086-14
August 11 , 2014
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Intermittent Poor A/C Cooling at Idle
Required Tools & Equipmen t
REQUIRED EQUI PMENT
SUPPLIER
Techstream 2.0*
Techstream Lite
PART NUMBER
QTY
TS2UNIT
ADE
1
TSLITEPDLR01
· Essential SST
NOTE
• Only ONE of the Techstream units listed above is required.
• Software version 9.10.037 or later is required .
• Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at
1-800-368-6787.
Repair Proced ure
1. Co nnect Techstream and navigate to the A/C System Data List.
2. With the vehicle at idle, cycle the A/C button and watch the Regulator Control Current, Regulator
Pressure Sensor, and Evaporator Fin Thermistor Data List graphs.
© 2014 Toyota Motor Sales, USA
@TOYOTA
August 11 , 2014
T-SB-0086-14
Page 3 of 4
Intermittent Poor A/C Cooling at Idle
Repair Procedure (Continued)
3. When the condition is occurring the following data will be seen :
• Regulator Control Current: "0.7" "A" or higher
• Regulator Pressure Sensor: Low pressure and not increasing
• Evaporator Fin Thermistor: Higher than normal and increasing
Figure 1.
Ambient Temp
Sensor
Adjusled Ambienl
Temp
Engine Coolant
Tern
Electric Heater
Count
E lectric Heater
Active Level
Refrigerant
Short a e Check
NC Cutoff Signal
Refrigeranl Gas
T pe
Number of Trouble
221 73 .
84.27
F
194.99
F
2
0
-
-
I
=I
ON
OFF
R134a
0
Can the concern be duplicated?
• YES -
Co ntinue to step 4.
• NO - This bulletin does NOT apply. Continue diagnosis using Problem Symptoms table
in the applicable Repair Manual.
© 2014 Toyota Motor Sales, USA
@TOYOTA
August 11, 2014
T-SB-0086-14
Intermittent Poor A/C Cooling at Idle
Repair Procedure (Continued)
4. Remove and replace the A/C compressor.
Refer to the Technical Information System (TIS), applicable model and model year
Repair Manual:
• 2014 Corolla (2ZR-FE) :
Vehicle Interior - Heating/Air Conditioning - "Compressor (for 2ZR-FE) :
Removal I Installation"
• 2014 Corolla (2ZR-FAE) :
Vehicle Interior - Heating/Air Conditioning - "Compressor (for 2ZR-FAE):
Removal I Installation"
5. Verify that the intermittent warm air condition is no longer present.
© 2014 Toyota Motor Sales, USA
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