id071100006200
1.Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
2.Remove the following parts:
3.Remove the blower fan controller. (See BLOWER FAN CONTROLLER REMOVAL/INSTALLATION.)
4.Connect the blower fan controller connector.
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5.Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
6.Switch the ignition ON (engine off or on).
7.Connect the negative (-) lead of the tester to body ground.
8.Insert the positive (+) lead of the tester into each blower fan controller terminal.
9.Measure the voltage according to the terminal voltage table.
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Terminal Voltage Table (Reference)
| Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item (s) |
|
|---|---|---|---|---|---|---|
|
A
|
Motor operation (-)
|
Blower motor
|
Switch the ignition off
|
1.0 or less
|
• Blower motor
• Related wiring harness
|
|
|
Fan stopped (Switch the ignition ON (engine off or on))
|
B+
|
|||||
|
Fan: manual 1st
|
8.4
|
|||||
|
Fan: manual 3rd
|
6.8
|
|||||
|
Fan: manual 7th
|
1.0 or less
|
|||||
|
B
|
Blower fan speed control
|
Climate control unit
|
• Related wiring harness
• Climate control unit
|
|||
|
C
|
GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
D
|
—
|
—
|
—
|
—
|
—
|
|
|
E
|
Motor operation (+)
|
Blower motor
|
Switch the ignition off
|
1.0 or less
|
• Blower motor
• Related wiring harness
|
|
|
Switch the ignition ON (engine off or on)
|
B+
|
|||||
|
F
|
B+
|
Blower relay
|
Switch the ignition off
|
1.0 or less
|
• Related wiring harness
• Blower relay
|
|
|
Switch the ignition ON (engine off or on)
|
B+
|
|||||
Blower Fan Speed Control Signal
Fan stopped
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Manual 1st
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Manual 3rd
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Manual 7th
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