Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 349
PM–20
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM
DESCRIPTION
Turning this switch on activates the clearance sonar system.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Remove the back sonar switch.
(b) Check the resistance.
Standard resistance
(c) Reinstall the back sonar switch.
NG
OK
Clearance Sonar Main Switch Circuit
1
INSPECT BACK SONAR SWITCH ASSEMBLY
Clearance Warning ECU
Assembly
+B
E
ECU
E
IG
AM1
AM1
IG1
IG1
Back Sonar Switch
Assembly
Ignition Switch
ALT
Battery
B132696E02
6
6 5 4 3 2 1
ECU
E
IG
Back Sonar Switch:
I102377E02
Tester Connection
Switch Condition
Specified Condition
3 (IG) - 4 (ECU)
Back sonar switch ON
Below 1
Ω
Back sonar switch OFF
1 M
Ω or higher
3 (IG) - 6 (E)
Back sonar switch ON
Below 30
Ω
Back sonar switch OFF
10 k
Ω or higher
REPLACE BACK SONAR SWITCH
ASSEMBLY
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM–21
PM
(a) Disconnect the E12 back sonar switch connector.
(b) Disconnect the E31 clearance warning ECU connector.
(c) Measure the voltage of the wire harness side connector.
Standard voltage
(d) Check the resistance.
Standard resistance
(e) Reconnect the switch connector.
(f)
Reconnect the ECU connector.
NG
OK
(a) Disconnect the E31 clearance warning ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage
(c) Reconnect the ECU connector.
OK
NG
2
CHECK HARNESS AND CONNECTOR (SWITCH - ECU, BATTERY AND BODY GROUND)
1 2
3
4 5
6
7 8
9 10 11 12
1 2 3 4 5 6
Clearance Warning ECU
E31
Wire Harness Side:
Back Sonar Switch
E12
ECU
IG
+B
E
Front View
Front View
E
I102378E02
Tester Connection
Switch Condition
Specified Condition
E12-3 (IG) - Body
ground
Ignition switch ON
11 to 14 V
Tester Connection
Specified Condition
E12-4 (ECU) - E31-3 (+B)
Below 1
Ω
E12-6 (E) - Body ground
E31-10 (E) - Body ground
REPAIR OR REPLACE HARNESS OR
CONNECTOR
3
CHECK CLEARANCE WARNING ECU ASSEMBLY
Wire Harness Side:
E31
E
+B
Front View
F100692E09
Tester Connection
Switch Condition
Specified Condition
E31-3 (+B) - E31-10 (E)
Ignition switch ON,
back sonar switch ON
11 to 14 V
REPLACE CLEARANCE WARNING ECU
ASSEMBLY
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
PM–22
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM
DESCRIPTION
The clearance warning ECU receives the ultrasonic sensor signal to sound the clearance warning buzzer.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Disconnect the E10 clearance warning buzzer
connector.
(b) Disconnect the E31 clearance warning ECU connector.
(c) Measure the voltage of the wire harness side connector.
Standard voltage
(d) Check the resistance.
Standard resistance
(e) Reconnect the buzzer connector.
(f)
Reconnect the ECU connector.
NG
Clearance Warning Buzzer Circuit
1
CHECK HARNESS AND CONNECTOR (BUZZER - ECU AND BATTERY)
Clearance Warning ECU
BBZ
Clearance Warning Buzzer
IG1
From
Ignition Switch
B132695E02
1 2
3
4 5
6
7 8
9 10 11 12
1
2
Wire Harness Side:
Clearance Warning ECU
Clearance Warning Buzzer
E31
E10
BBZ
I102380E02
Tester Connection
Switch Condition
Specified Condition
E10-1 - Body ground
Ignition switch ON
11 to 14 V
Tester Connection
Specified Condition
E10-2 - E31-2 (BBZ)
Below 1
Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM–23
PM
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
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