Page 9 of 2543
PREPARATION
SST (SPECIAL SERVICE TOOLS)
Air Conditioner Service Tool Set
Refrigerant Drain Service Valve
T±Joint
Quick Coupler
Quick Coupler
Refrigerant Charging Gauge
Refrigerant Charging Hose
Refrigerant Charging Hose
Refrigerant Charging Hose
Magnetic Clutch Remover
Magnetic Clutch Stopper
Snap Ring Pliers
Gas Leak Detector Assembly
Discharge (diam. 16 mm)
Suction (diam. 16 mm)
Suction (Blue)
Discharge (Red)
Utility (Green)
± AIR CONDITIONING SYSTEMPREPARATIONAC±9
Page 10 of 2543
RECOMMENDED TOOLS
TOYOTA Electrical Tester Set
LUBRICANT
Item
Capacity
Classification
Compressor oil ± ND±OIL 8 or equivalent
When replacing receiver 10 cc (0.34 fl.oz.)
When replacing condenser 40 cc (1.4 fl.oz.)
When replacing evaporator 40 cc (1.4 fl.oz.)
When replacing compressor 140 cc (4.8 fl.oz.)
AC±10± AIR CONDITIONING SYSTEMPREPARATION
Page 11 of 2543
USE OF MANIFOLD GAUGE SET
MANIFOLD GAUGE SET INSTALLATION
1. CONNECT CHARGING HOSES TO MANIFOLD GAUGE
SET
Tighten the nuts by hand.
CAUTION: Do not connect the wrong hoses.
2. CONNECT QUICK CONNECTORS TO CHARGING HOSES
Tighten the nuts by hand.
3. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
4. REMOVE CAPS FROM SERVICE VALVES ON
REFRIGERANT LINE
5. CONNECT QUICK CONNECTORS TO SERVICE VALVES
HINT: Push the quick connector onto the service valve, then
slide the sleeve of the quick connector downward to lock it.
MANIFOLD GAUGE SET REMOVAL
1. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
2. DISCONNECT QUICK CONNECTORS FROM SERVICE
VALVES ON REFRIGERANT LINE
HINT: Slide the sleeve of the quick connector upward to un-
lock the connector and remove it from the service valve.
3. INSTALL CAPS TO SERVICE VALVES ON REFRIGERANT
LINE
± AIR CONDITIONING SYSTEMUSE OF MANIFOLD GAUGE SETAC±11
Page 12 of 2543
±MEMO±
AC±12± AIR CONDITIONING SYSTEMUSE OF MANIFOLD GAUGE SET
Page 13 of 2543
TROUBLESHOOTING
± AIR CONDITIONING SYSTEMTROUBLESHOOTINGAC±13
Page 14 of 2543
HOW TO PROCEED WITH TROUBLESHOOTING
Perform troubleshooting in accordance with the procedure on the following page.
P. AC±16
P. IN±24
P. AC±19
P. AC±19P. AC±26
P. AC±28 ~ AC±70
Vehicle Brought to Workshop
Customer Problem Analysis
Check and Clear Trouble Code (Precheck)
Problem Symptom Confirmation Symptom Simulation
Trouble Code Check
Trouble Code ChartMatrix Chart of Problem Symptoms
Circuit InspectionActuator CheckPart Inspection
Identification of Problem
Repair
End
Confirmation Test
P. AC±19
Items insideare titles of pages in this
manual, with the page number indicated in the bottom
portion. See the indicated pages for detailed explana-
tions.
AC±14± AIR CONDITIONING SYSTEMTROUBLESHOOTING
Page 15 of 2543
CUSTOMER PROBLEM ANALYSIS CHECK SHEET
AIR CONDITIONING SYSTEM Check Sheet
± AIR CONDITIONING SYSTEMTROUBLESHOOTINGAC±15
Page 16 of 2543
PANEL DIAGNOSIS SYSTEM
If a trouble occurs in A/C system, the specified lamp on the control panel starts blinking during the diagnos-
tic sensor check.
During system diagnosis, a trouble is indicated on the panel by the blinking of a specified light instead of
a code display. (See TROUBLE CODE CHART)
For example, when a trouble occurs in solar sensor circuit, the LED for DEF mode switch will be blinking
during the diagnostic sensor check.
SWITCH
SWITCH NAMECODECODESWITCH NAMECODESWITCH NAME
LED
INDICATOR NAMECODEINDICATOR NAMECODEINDICATOR NAMECODE
AC±16± AIR CONDITIONING SYSTEMTROUBLESHOOTING