Toyota Tundra (2015 year). Manual — part 2254
OK
(a) Disconnect the J19 air conditioning amplifier connector.
(b) Disconnect the J128 solar sensor connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
J19-32 (TSP) - J128-2 (TSR)
Always
Below 1 Ω
J19-32 (TSP) or J128-2 (TSR) -
Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.
CHECK AUTOMATIC LIGHT CONTROL SENSOR (SOLAR SENSOR (TSR - CLTE
VOLTAGE))
(a) Remove the solar sensor with its connector still connected
.
(b) Apply battery voltage between terminals 6 (CLTB) and 3
below.
Standard voltage:
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
2 (TSR) - 3 (CLTE)
Sensor is subjected to
electric light
0.8 to 4.3 V
Sensor is covered with a
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
HINT:
As the inspection light is moved away from the sensor, the
voltage decreases.
Use an incandescent light for inspection. Bring it approximately
30 cm (11.8 in.) from the solar sensor.
NG
REPLACE AUTOMATIC LIGHT CONTROL SENSOR
(SOLAR SENSOR)
OK
REPLACE AIR CONDITIONING AMPLIFIER
5.
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SOLAR SENSOR AND BODY
GROUND)
(a) Disconnect the J3 ECU connector.
(b) Disconnect the J128 solar sensor connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
J3-18 (CLTE) - J128-3 (CLTE)
Always
Below 1 Ω
J3-20 (CLTB) - J128-6 (CLTB)
J3-18 (CLTE) or J128-3 (CLTE) -
Body ground
Always
10 kΩ or higher
J3-20 (CLTB) or J128-6 (CLTB) -
Body ground
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE MAIN BODY ECU
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002ZSV00WX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): B1422/22;
Compressor Lock Sensor Circuit; 2015 MY Tundra [08/2014 - ]
DTC
B1422/22 Compressor Lock Sensor Circuit
DESCRIPTION
The ECM sends an engine speed signal to the air conditioning amplifier via the CAN communication system.
The air conditioning amplifier reads the difference between compressor speed and engine speed. When the
difference becomes too large, the air conditioning amplifier determines that the compressor locks, and turns the
magnetic clutch off.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B1422/22
Open or short in compressor
lock sensor circuit
Air conditioning compressor (lock sensor)
Compressor drive belt
Harness or connector between air conditioning compressor
(lock sensor) and air conditioning amplifier
Air conditioning amplifier
CAN communication system
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
A
1.
CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Result
RESULT
PROCEED TO
CAN DTC is not output
A
CAN DTC is output
B
B
GO TO CAN COMMUNICATION SYSTEM
2.
CHECK AIR CONDITIONING AMPLIFIER
(a) Remove the air conditioning amplifier with the connectors still connected
.
(b) Using an oscilloscope, check the waveform.
Standard:
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
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