Toyota Tundra (2015 year). Manual — part 2285
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002VXN00UX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): Blower Motor
Circuit; 2015 MY Tundra [08/2014 - ]
Blower Motor Circuit
DESCRIPTION
The blower motor is operated by signals from the air conditioning amplifier. Blower motor speed signals are
transmitted by changes in the duty ratio.
Duty Ratio:
The blower motor controller controls the blower motor speed.
WIRING DIAGRAM
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
OK
INSPECTION PROCEDURE
PROCEDURE
1.
INSPECT FUSE (HTR)
(a) Remove the HTR H-fuse from the engine room relay block, junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
HTR H-fuse
Always
Below 1 Ω
NG
REPLACE FUSE
2.
CHECK HARNESS AND CONNECTOR (BLOWER MOTOR - BATTERY AND BODY
GROUND)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
OK
(a) Disconnect the J32 blower motor connector.
(b) Measure the resistance and voltage according to the
value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J32-1 (GND) - Body ground
Always
Below 1 Ω
Standard voltage:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J32-3 (+B) - Body ground
Always
11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
3.
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BLOWER
MOTOR)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
OK
(a) Disconnect the J19 air conditioning amplifier connector.
(b) Disconnect the J32 blower motor connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
J19-23 (BLW) - J32-2 (SI)
Always
Below 1 Ω
J19-23 (BLW) or J32-2 (SI) - Body
ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.
CHECK BLOWER MOTOR
(a) Disconnect the J19 air conditioning amplifier connector.
(b) Reconnect the J32 blower motor connector.
(c) Measure the voltage according to the value(s) in the table
below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J19-23 (BLW) - Body
ground
Ignition switch ON
4.5 to 5.5 V
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
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