T-SB-0084-13

July 12, 2013
T-SB-0084-13
Warm Air from HVAC Vents with A/C ON - DTC B1479
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
Market
USA
Applicability
YEAR(S)
MODEL(S)
2012 – 2013
Camry
ADDITIONAL INFORMATION
Introduction
Some 2012 – 2013 model year Camry vehicles may exhibit a condition where the HVAC system
intermittently blows warm air from the vents with the A/C ON. Diagnostic Trouble Code (DTC)
B1479 (Flow Sensor Circuit) may be stored in the A/C system as either a current or history DTC.
A malfunctioning A/C compressor flow sensor may cause this condition. Follow the procedure in
this bulletin to determine if it is applicable to repair the vehicle.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs shown
below.
PLANT
MODEL
LINE
1
TMMK
Camry
2
–
SIA
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
2GR-FE
4T1BK1FK#DU020397
2AR-FE
4T1BF1FK#DU209020
2GR-FE
4T1BK1FK#DU525653
2AR-FE
4T1BF1FK#DU641325
2AR-FE
4T4BF1FK#DR278036
Parts Information
PART NUMBER
PART NAME
QTY
88320-06190
Compressor Assy, Cooler
1
88310-0R014
Compressor Assy, w/Pulley
1
PREVIOUS
NEW
88320-33240
88310-0R013
© 2013 Toyota Motor Sales, USA
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July 12, 2013
T-SB-0084-13
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Warm Air from HVAC Vents with A/C ON - DTC B1479
Warranty Information
OP CODE
DESCRIPTION
ENGINE
TIME
OFP
AC1205
R & R Compressor with Magnetic
Clutch Assembly
2AR-FE
3.0
88310-0R013
2GR-FE
3.4
88320-33240
T1
T2
7A
54
APPLICABLE WARRANTY
• This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months
or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.
• Warranty application is limited to occurrence of the specified condition described in this
bulletin.
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream 2.0*
TIS Techstream
PART NUMBER
QTY
TS2UNIT
1
TSPKG1
ADE
Techstream Lite
TSLITEDLR01
* Essential SST.
NOTE
• Only ONE of the Techstream units listed above is required.
• Software version 8.10.021 or later is required.
• Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at
1-800-368-6787.
REQUIRED EQUIPMENT
R-134a Refrigerant Recovery/Recycling Machine
SUPPLIER
PART NUMBER
ADE
–
NOTE
Additional refrigerant service equipment may be ordered by calling Approved Dealer Equipment
(ADE) at 1-800-368-6787.
© 2013 Toyota Motor Sales, USA
July 12, 2013
T-SB-0084-13
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Warm Air from HVAC Vents with A/C ON - DTC B1479
Repair Procedure
1. Using TIS Techstream, check for Diagnostic Trouble Codes (DTCs) in the A/C system.
• If DTC B1479 is stored as a current or history DTC, go to step 2.
• If DTC B1479 is NOT stored as current or history, this bulletin does NOT apply. Refer to the
Problem Symptoms Table of the Repair Manual.
Refer to the Technical Information System (TIS), applicable model and model year Repair
Manual:
• 2012 Camry:
Vehicle Interior – Heating/Air Conditioning: “Heating/Air Conditioning: Air Conditioning
System (for Automatic Air Conditioning System) / (for Manual Air Conditioning System):
Problem Symptoms Table”
• 2013 Camry:
Vehicle Interior – Heating/Air Conditioning: “Heating/Air Conditioning: Air Conditioning
System (for Automatic Air Conditioning System) / (for Manual Air Conditioning System):
Problem Symptoms Table”
2. Using Techstream, inspect the flow sensor.
A. Turn Key ON Engine ON.
B. Connect Techstream to the DLC3.
C. Enter the following menus:
Body Electrical / Air Conditioner / Data List
D. Check the “Flow Sensor” voltage.
(1) If the A/C is OFF and the voltage reading is LESS than 3.7 V, continue to step 3.
(2) If the A/C is ON and the voltage reading is MORE than 3.7 V, evacuate the A/C system
and verify refrigerant charge level.
(3) Verify the AC system is fully charged. If the system is under charged, recharge and see
if the B1479 DTC resets.
(4) If the system is fully charged, continue to step 3.
© 2013 Toyota Motor Sales, USA
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T-SB-0084-13
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Warm Air from HVAC Vents with A/C ON - DTC B1479
Repair Procedure (Continued)
3. Check the harness between the A/C compressor flow sensor and the A/C amplifier.
A. Disconnect the I77 air conditioning amplifier assembly connector.
B. Disconnect the E75 cooler compressor assembly (A/C flow sensor) connector.
C. Measure the resistance according to the value(s) in the table below.
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
I77-7 (FLOQ) - E75-3 (QUFL)
Below 1 Ω
I77-13 (SG-2) - E75-2 (SGFL)
I77-30 (S5-1) - E75-1 (S5FL)
I77-7 (FLOQ) - Body Ground
Always
I77-13 (SG-2) - Body Ground
10 kΩ or higher
I77-30 (S5-1) - Body Ground
(1) If any of the harness resistance tests fail, this bulletin does NOT apply. Repair or
replace the harness and go to step 5.
(2) If all tests are within specifications, proceed to step 4.
4. Remove and replace the A/C compressor.
Refer to TIS, applicable model and model year Repair Manual:
• 2012 Camry:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Compressor
(for 2AR-FE): Removal / Installation”
• 2012 Camry:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Compressor
(for 2GR-FE): Removal / Installation”
• 2013 Camry:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Compressor
(for 2AR-FE): Removal / Installation”
• 2013 Camry:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Compressor
(for 2GR-FE): Removal / Installation”
5. Clear all DTCs and confirm the A/C system is operating correctly.
© 2013 Toyota Motor Sales, USA