ELECTRIC PARKING BRAKE CONTROL MODULE INSPECTION


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1.  Disconnect the electric parking brake control module connector. (See ELECTRIC PARKING BRAKE CONTROL MODULE REMOVAL/INSTALLATION.)

2.  Attach the tester lead to the electric parking brake control module wiring harness-side connector and inspect voltage or continuity according to the Terminal Voltage Table (Reference) on the table.

•  If not specified, replace the electric parking brake control module. (See ELECTRIC PARKING BRAKE CONTROL MODULE REMOVAL/INSTALLATION.)


Terminal Voltage Table (Reference)

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Terminal

Connected to

Test condition

Specification

Inspection item(s)

1A
1B
1C
Battery
Under any condition
B+
•  Wiring harness between electric parking brake control module terminal 1C and battery
1D
1E
1F
1G
1H
Battery
Under any condition
B+
•  Wiring harness between electric parking brake control module terminal 1H and battery
1I
1J
1K
1M
Electric parking brake motor gear unit (RH)
Electric parking brake switch is in neutral position
6.0—7.0 V
•  Wiring harness between electric parking brake control module terminal 1M and electric parking brake motor gear unit (RH) terminal B
Electric parking brake is releasing while electric parking brake switch is pushed down
B+
Electric parking brake is applying while electric parking brake switch is pulled up
1.0 V or less
1N
1P
Electric parking brake motor gear unit (RH)
Electric parking brake switch is in neutral position
6.0—7.0 V
•  Wiring harness between electric parking brake control module terminal 1P and electric parking brake motor gear unit (RH) terminal A
Electric parking brake is releasing while electric parking brake switch is pushed down
1.0 V or less
Electric parking brake is applying while electric parking brake switch is pulled up
B+
1Q
1R
Indicator light built into electric parking brake switch
Indicator light off
1.0 V or less
•  Wiring harness between electric parking brake control module terminal 1R and electric parking brake switch terminal L
Indicator light on
0 V
1S
1T
1U
Electric parking brake motor gear unit (LH)
Electric parking brake switch is in neutral position
6.0—7.0 V
•  Wiring harness between electric parking brake control module terminal 1U and electric parking brake motor gear unit (LH) terminal A
Electric parking brake is releasing while electric parking brake switch is pushed down
1.0 V or less
Electric parking brake is applying while electric parking brake switch is pulled up
B+
1V
1W
Electric parking brake switch
Electric parking brake switch is in neutral position
4.3 V
•  Wiring harness between electric parking brake control module terminal 1W and electric parking brake switch terminal G
Electric parking brake switch is pushed down
4.3 V
Electric parking brake switch is pulled up
4.3 V
1X
1Y
1Z
Electric parking brake motor gear unit (LH)
Electric parking brake switch is in neutral position
6.0—7.0 V
•  Wiring harness between electric parking brake control module terminal 1Z and electric parking brake motor gear unit (LH) terminal B
Electric parking brake is releasing while electric parking brake switch is pushed down
B+
Electric parking brake is applying while electric parking brake switch is pulled up
1.0 V or less
1AA
1AB
IG1 relay
Ignition OFF
1.0 V or less
•  Wiring harness electric parking brake control module terminal 1AB and IG1 relay
Ignition ON
B+
2A
2B
2C
Ground point
Under any condition
1.0 V or less
•  Wiring harness between electric parking brake control module terminal 2C and ground point
2D
2E
2F
CAN related module
Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
2G
CAN related module
Because this terminal is for communication, determination using terminal voltage inspection is not possible. Perform the inspection using the DTC inspection.
2H
Ground point
Under any condition
1.0 V or less
•  Wiring harness between electric parking brake control module terminal 2H and ground point
2I
2J
2K
Electric parking brake switch
Electric parking brake switch is in neutral position
2.4 V
•  Wiring harness between electric parking brake control module terminal 2K and electric parking brake switch terminal E
Electric parking brake switch is pushed down
2.4 V
Electric parking brake switch is pulled up
2.3 V
2L
Electric parking brake switch
Electric parking brake switch is in neutral position
3.1 V
•  Wiring harness between electric parking brake control module terminal 2L and electric parking brake switch terminal C
Electric parking brake switch is pushed down
1.2 V
Electric parking brake switch is pulled up
1.9 V
2N
2O
2Q
Electric parking brake switch
Electric parking brake switch is in neutral position
1.2 V
•  Wiring harness between electric parking brake control module terminal 2Q and electric parking brake switch terminal H
Electric parking brake switch is pushed down
3.1 V
Electric parking brake switch is pulled up
3.7 V
2R
2S
2T
2U
2V
2W
2X
2Y
2Z