Toyota Tundra (2015 year). Manual — part 2256
(b) Disconnect the A20 air conditioning pressure switch connector.
(c) Run the engine at approximately 2000 rpm.
(d) Set the blower speed control switch to the HI position.
(e) Set the temperature control level to the MAX. COOL position.
(f) Turn the A/C switch ON.
(g) Check the switch operation.
(1) Connect the positive (+) lead from an ohmmeter to terminal 1 (+S) and the negative (-) lead to
terminal 2 (-S).
(2) Measure the resistance between the terminals when refrigerant pressure is changed as shown
in the illustration.
OK:
Resistance varies as shown in the illustration.
Result
RESULT
PROCEED TO
NG
A
OK (Checking from the PROBLEM SYMPTOMS TABLE)
B
OK (Checking from the DTC)
C
B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN
PROBLEM SYMPTOMS TABLE
C
REPLACE AIR CONDITIONING AMPLIFIER
A
REPLACE AIR CONDITIONING PRESSURE SWITCH
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002VXG00MX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): B1424/24;
Solar Sensor Circuit (Driver Side); 2015 MY Tundra [08/2014 - ]
DTC
B1424/24 Solar Sensor Circuit (Driver Side)
DESCRIPTION
When the sunlight increases, the output current increases. As the sunlight decreases, the output current
decreases. The air conditioning amplifier detects output current from the solar sensor.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B1424/24
Open or short in driver side solar
sensor circuit
Automatic light control sensor (solar sensor)
Harness or connector between solar sensor and air
conditioning amplifier
Harness and connector between solar sensor and
main body ECU
Main body ECU
Air conditioning amplifier
WIRING DIAGRAM
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
INSPECTION PROCEDURE
HINT:
If DTC B1244 is output at the same time, troubleshoot DTC B1244 first
.
PROCEDURE
1.
READ VALUE USING TECHSTREAM (SOLAR SENSOR (for Driver Side))
(a) Use the Data List to check if the driver side solar sensor is functioning properly.
Air Conditioner
TESTER DISPLAY
MEASUREMENT ITEM /
RANGE
NORMAL CONDITION
DIAGNOSTIC
NOTE
Solar Sensor (D
Side)
Driver side solar sensor /
Min.: 0
Max.: 255
Driver side solar sensor voltage increases as
brightness increases
Open in circuit: 0
Short in circuit:
255
OK:
The display is as specified in the normal condition.
Result
RESULT
PROCEED TO
NG
A
OK (Checking from the PROBLEM SYMPTOMS TABLE)
B
OK (Checking from the DTC)
C
B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
A
OK
PROBLEM SYMPTOMS TABLE
C
REPLACE AIR CONDITIONING AMPLIFIER
2.
CHECK HARNESS AND CONNECTOR (SOLAR SENSOR)
(a) Disconnect the J128 solar sensor connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J128-3 (CLTE) - Body ground
Always
Below 1 Ω
(c) Measure the voltage according to the value(s) in the table
below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J128-6 (CLTB) - J128-3
(CLTE)
Ignition switch ON
11 to 14 V
Ignition switch OFF
Below 1 V
NG
GO TO STEP 5
3.
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - SOLAR
SENSOR)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
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