DASH-ELECTRICAL SUPPLY UNIT INSPECTION [FULL-AUTO AIR CONDITIONER (US)]
DASH-ELECTRICAL SUPPLY UNIT INSPECTION [FULL-AUTO AIR CONDITIONER (US)]
SM2566277
id0740a18205y1
1.Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
2.Remove the following parts:
- (1)Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
- (2)Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION.)
- (3)Passenger-side front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)
- (4)Passenger-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)
- (5)Passenger-side decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION.)
- (6)Passenger-side lower panel (See LOWER PANEL REMOVAL/INSTALLATION [(US)].)
- (7)Passenger-side knee air bag module (with passenger-side knee air bag module) (See KNEE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM – US/CANADA SPEC.].)
3.Connect the negative battery terminal.
4.Switch the ignition ON (engine off or on).
5.Connect the negative (-) lead of the tester to body ground.
6.Insert the positive (+) lead of the tester into each dash-electrical supply unit terminal and measure the voltage according to the terminal voltage table.
-
• If there is any malfunction, inspect the parts under “Inspection item (s)”.
Terminal Voltage Table (Reference)
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|
|
Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item (s) |
|
|---|---|---|---|---|---|---|
|
1A
|
Foot light *1
|
Foot light control
|
Foot light on
|
1.0 or less
|
• Related wiring harness
|
|
|
Foot light off
|
B+
|
|||||
|
1B
|
—
|
—
|
—
|
—
|
—
|
|
|
1C
|
—
|
—
|
—
|
—
|
—
|
|
|
1D
|
GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
1E
|
IG
|
F47 15 A fuse
|
Switch the ignition ON (engine off or on)
|
B+
|
• Related wiring harness
|
|
|
Switch the ignition off
|
1.0 or less
|
|||||
|
1F
|
—
|
—
|
—
|
—
|
—
|
|
|
1G
|
+B
|
F16 15 A fuse
|
Under any condition
|
B+
|
• Related wiring harness
• F16 15 A fuse
|
|
|
1H
|
—
|
—
|
—
|
—
|
—
|
|
|
1I
|
HS_CAN_L
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
1J
|
HS_CAN_L
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
1K
|
HS_CAN_H
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
1L
|
HS_CAN_H
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
2A
|
—
|
—
|
—
|
—
|
—
|
|
|
2B
|
LIN1
|
• Air mix actuator (Driver-side) (Passenger-side)
• Airflow mode actuator
• Air intake actuator
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
2C
|
—
|
—
|
—
|
—
|
—
|
|
|
2D
|
—
|
—
|
—
|
—
|
—
|
|
|
2E
|
Evaporator temperature sensor input
|
Evaporator temperature sensor
|
Compared with temperature detected by evaporator temperature sensor
|
Refer to graph
|
• Related wiring harness
|
|
|
2F
|
—
|
—
|
—
|
—
|
—
|
|
|
2G
|
Sensor GND
|
Evaporator temperature sensor
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
2H
|
GND_HVAC_1
|
• Air mix actuator (Driver-side) (Passenger-side)
• Airflow mode actuator
• Air intake actuator
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
2I
|
—
|
—
|
—
|
—
|
—
|
|
|
2J
|
IG_HVAC_1
|
• Air mix actuator (Driver-side) (Passenger-side)
• Airflow mode actuator
• Air intake actuator
|
Switch the ignition ON (engine off or on)
|
B+
|
• Related wiring harness
|
|
|
Switch the ignition off
|
B+ / 1.0 or less *6
|
|||||
|
3A
|
HS_CAN_H
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
3B
|
HS_CAN_L
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
3C
|
—
|
—
|
—
|
—
|
—
|
|
|
3D
|
—
|
—
|
—
|
—
|
—
|
|
|
3E
|
—
|
—
|
—
|
—
|
—
|
|
|
3F
|
—
|
—
|
—
|
—
|
—
|
|
|
3G
|
Mode switch input *2
|
Drive selection switch
|
Ignition ON
|
Pressed to SPORT side (forward)
|
1.0 or less
|
• Related wiring harness
|
|
Pressed to — side (backward)
|
8.0
|
|||||
|
Not pressed
|
9.0
|
|||||
|
3H
|
Buckle switch input
|
Driver-side buckle switch
|
Ignition ON
|
Driver-side front buckle fastened
|
B+
|
• Related wiring harness
• Driver-side front buckle
|
|
Driver-side front buckle unfastened
|
1.0 or less
|
|||||
|
3I
|
—
|
—
|
—
|
—
|
—
|
|
|
3J
|
LIN2
|
Seat warmer control unit *3 / Position memory control module *4 / Heated steering wheel control unit *5
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
4A
|
Motor operation (-)
|
Blower motor
|
Switch the ignition off
|
1.0 or less
|
• Related wiring harness
• Blower motor
|
|
|
Fan stopped (Switch the ignition ON (engine off or on))
|
B+
|
|||||
|
4B
|
—
|
—
|
—
|
—
|
—
|
|
|
4C
|
Blower motor GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
4D
|
—
|
—
|
—
|
—
|
—
|
|
|
4E
|
Motor operation (+)
|
Blower motor
|
Switch the ignition off
|
1.0 or less
|
• Related wiring harness
• Blower motor
|
|
|
Switch the ignition ON (engine off or on)
|
B+
|
|||||
|
4F
|
B+
|
Blower relay
|
Switch the ignition off
|
1.0 or less
|
• Related wiring harness
|
|
|
Switch the ignition ON (engine off or on)
|
B+
|
|||||
*1:With foot light
*2:Drive selection switch
*3:Without driver-side power seat
*4:With driver-side power seat
*5:With heated steering wheel
*6:Terminal voltage differs depending on the operation condition of the dash-electrical supply unit.
 |