CHECK ECU TERMINAL


<Electric parking brake ECU connector>

TERMINAL VOLTAGE CHECK
1.Do not disconnect the electric parking brake ECU connector, and measure the voltages between earth terminal No.8 and each respective terminal.
2.The terminal layout is shown in the illustration.


Terminal No.
 Terminal code
 Check item
 Checking requirement
 Normal condition
1
 M+
 Motor output
 Ignition switch: ON
 1 V or less
2
 M-
 Motor output
 Ignition switch: ON
 1 V or less
3
 +B
 Motor power supply
 Always
 Battery voltage
4
 -
 -
 -
 -
5
 IND
 Electric parking brake switch indicator output
 The electric parking brake switch indicator is OFF.
 Battery voltage
The electric parking brake switch indicator is ON.
 1.5 V or less
6
 -
 -
 -
 -
7
 -
 -
 -
 -
8
 -
 -
 -
 -
Terminal No.
 Terminal code
 Check item
 Checking requirement
 Normal condition
11
 TSEN
 Tension sensor 1 signal
 Ignition switch: ON
 0.5 - 4.5 V
12
 VT
 Tension sensor power supply
 Ignition switch: ON
 Approximately 5 V
13
 TSN2
 Tension sensor 2 signal
 Ignition switch: ON
 0.5 - 4.5 V
14
 -
 -
 -
 -
15
 IG
 Ignition switch input
 Ignition switch: ON
 Battery voltage
16
 -
 -
 -
 -
17
 BECU
 ECU power supply
 Always
 Battery voltage
18
 CANL
 CAN bus line
 -
 -
19
 REL1
 Release switch 1 input
 Ignition switch: ON
 Approximately 8 V
20
 LCK2
 Lock switch 2 input
 Ignition switch: ON
 Approximately 8 V
21
 -
 -
 -
 -
22
 REL2
 Release switch 2 input
 Ignition switch: ON
 Approximately 8 V
23
 LCK1
 Lock switch 1 input
 Ignition switch: ON
 Approximately 3 V
24
 -
 -
 -
 -
25
 -
 -
 -
 -
26
 CANH
 CAN bus line
 -
 -

CONTINUITY CHECK WIRING HARNESS-SIDE CONNECTOR
1.Turn the ignition switch to the LOCK (OFF) position.
2.Disconnect the electric parking brake ECU connector.
3.Check the resistance and continuity between the terminals indicated in the table below.
4.The terminal layout is shown in the illustration.


Terminal No.
 Terminal code
 Signal
 Normal condition
8 - body earth
 GND1
 Earth
 Continuity exists (2 Ω or less)
Terminal No.
 Terminal code
 Signal
 Normal condition
21 - body earth
 TGND
 Earth
 Continuity exists (2 Ω or less)
25 - body earth
 SG
 Earth
 Continuity exists (2 Ω or less)

<Electric parking brake connector>

TERMINAL VOLTAGE CHECK
1.Do not disconnect the electric parking brake connector, and measure the voltages between earth terminal No.7 and each respective terminal.
2.The terminal layout is shown in the illustration.


Terminal No.
 Check item
 Checking requirement
 Normal condition
1
 Motor power supply
ECU power supply
 Always
 Battery voltage
2
 Release switch 1 input
 Ignition switch: ON
 Approximately 8 V
3
 Ignition switch input
 Ignition switch: ON
 Battery voltage
4
 CAN bus line
 -
 -
5
 Electric parking brake switch indicator output
 The electric parking brake switch indicator is OFF.
 Battery voltage
The electric parking brake switch indicator is ON.
 1.5 V or less
6
 Lock switch 2 input
 Ignition switch: ON
 Approximately 8 V
7
 -
 -
 -
8
 -
 -
 -
9
 Lock switch 1 input
 Ignition switch: ON
 Approximately 3 V
10
 CAN bus line
 -
 -
11
 Release switch 2 input
 Ignition switch: ON
 Approximately 8 V
12
 -
 -
 -

CONTINUITY CHECK WIRING HARNESS-SIDE CONNECTOR
1.Turn the ignition switch to the LOCK (OFF) position.
2.Disconnect the electric parking brake connector.
3.Check the resistance and continuity between the terminals indicated in the table below.
4.The terminal layout is shown in the illustration.


Terminal No.
 Signal
 Normal condition
7 - body earth
 Earth
 Continuity exists (2 Ω or less)