Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 346
PM–8
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM
OPERATION CHECK
1.
DETECTION RANGE MEASUREMENT AND
INDICATOR CHECK
(a) Turn the ignition switch ON.
(b) Move the shift lever to the reverse position (when
the back sonar is checked).
NOTICE:
Apply the parking brake securely so that the
vehicle does not move.
(c) Turn the back sonar switch ON.
(d) Move a
φ 60 mm (2.36 in.) pole around the sensor to
measure the detection ranges of the sensor.
NOTICE:
The measured detection ranges are for a
φ 60
mm (2.36in.) pole. The detection ranges for walls
and other obstacles are different.
(e) Check the buzzer sounding condition when the
ultrasonic sensor detects an obstacle.
Operation condition
HINT:
Since sound waves are used for the detection range
measurement, the detection range may vary a little
due to the outside air temperature.
Ultrasonic Sensor Detection Range:
Approximately 200 mm (7.87 in.)
Approximately 1,100 mm (43.31 in.)
Approximately 400 mm (15.75 in.)
Approximately 500 mm (19.69 in.)
Approximately 1,600 mm (62,99 in.)
I102680E01
Ignition switch
Clearance sonar main switch
Shift position
ON
ON
Reverse Position
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM–9
PM
2.
CHECK INITIAL CHECK FUNCTION
(a) Check the initial check function for the buzzer. Turn
the ignition switch ON and turn the back sonar
switch ON. Regardless of shift lever position, the
buzzer will sound after approximately 0.4 seconds.
The buzzer sound will continue for approximately
1.0 +- 0.3 seconds. If the buzzer's initial check
pattern does not sound, there may be a malfunction
in the ignition switch, back sonar switch, clearance
warning buzzer and/or clearance warning ECU.
Detection within
500 +-50 mm (19.69 +-1.97 in.)
Detection within
500 +-50 mm (19.69 +-1.97 in.) to
1,000 +-100 mm (39.37 +-3.94 in.)
Detection within
1,000 +-100 mm (39.37 +-3.94 in.) to
1,500 +-150 mm (59.06 +-5.91 in.)
OFF
ON
OFF
ON
OFF
ON
T1
T1
T1
T2
T1: 0.0075 seconds
T2: 0.255 seconds
Clearance Warning Buzzer
I102371E02
Detection
Mode
Back Sonar Switch ON
ON
OFF
Approximately
0.4 seconds
1.0 +-0.3 seconds
Initial Check Pattern
I102372E02
PM–10
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM
(b) After checking the initial check function, check that
the buzzer fault pattern does not sound. If the
buzzer fault pattern sounds, there may be a problem
with the sensor and/or sensor wire harness. The
fault pattern will continue sounding until the problem
is fixed.
3.
ADJUST BUZZER VOLUME
(a) Turn the knob on the clearance warning ECU to
adjust the volume.
Fault Pattern
ON
OFF
Buzzer
+-0.025 seconds
1.5 +-0.5 seconds (1 cycle)
0.75 +-0.075 seconds
Normal Return
I102373E02
VOLUMU
ABS
I102663
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM–11
PM
PROBLEM SYMPTOMS TABLE
HINT:
•
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected area"
column of the table. Check each symptom by checking the
suspected areas in the order they are listed. Replace parts
as necessary.
•
Inspect the fuses and relays related to this system before
inspecting the suspected areas below.
Clearance sonar system
Symptom
Suspected area
See page
Initial check does not function
1. Clearance sonar main switch circuit
2. Clearance sonar buzzer circuit
3. Clearance warning buzzer
4. Wire harness
-
5. Clearance warning ECU
Clearance sonar system does not function (Initial
check functions normally)
1. Initial check
-
2. Back sonar sensor LH circuit
3. Back sonar sensor RH circuit
4. Back-up light switch circuit
5. Wire harness
-
6. Clearance warning ECU
Buzzer volume is too low
1. Adjust buzzer volume
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