Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 347
PM–12
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM
TERMINALS OF ECU
1.
CLEARANCE WARNING ECU
(a) Disconnect the E31 ECU connector.
(b) Measure the voltage of the wire harness side
connector.
Standard voltage:
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Reconnect the ECU connector.
(d) Measure the voltage of the connector.
Standard voltage:
If the result is not as specified, the ECU may have a
malfunction.
1
2
3
4
5
6
7
8
9
10
11
12
E31
I102375E02
Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
+B (E31-3) - Body ground
LG - Body ground
+B power supply
Ignition switch ON, back
sonar switch ON
11 to 14 V
Ignition switch ON, back
sonar switch OFF
Below 1 V
E (E31-10) - Body ground
W-B - Body ground
Body ground
Always
Below 1 V
Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
BBZ (E31-2) - E (E 31-10)
L-B - W-B
Buzzer input
Ignition switch ON, back sonar
switch ON
Pulse generation
Ignition switch ON, back sonar
switch OFF
Below 1 V
S6 (E31-12) - E1 (E31-11)
P - Y
No. 1 ultrasonic sensor
(LH)
When signal transmitted from
ECU to No. 1 ultrasonic
sensor (LH)
Pulse generation
S5 (E31-6) - E2 (E31-5)
B - W
No. 1 ultrasonic sensor
(RH)
When signal transmitted from
ECU to No. 1 ultrasonic
sensor (RH)
RL (E31-8) - Body ground
R-Y - Body ground
Back-up light switch signal
input
Ignition switch ON, shift lever
in reverse position
11 to 14 V
Ignition switch ON, shift lever
except reverse position
Below 1 V
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM–13
PM
DESCRIPTION
This circuit sends a signal of the back-up light switch or park/neutral position switch to the clearance
warning ECU.
WIRING DIAGRAM
Back-up Light Circuit
Clearance Warning ECU
RL
Back-up Light Switch
*1
IG1
AM1
AM1
IG1
Ignition Switch
ALT
Park/Neutral Position Switch
*2
RB
RL
R
*2: For Automatic Tranmission
*1: For Manual Transmission
Battery
*1
*1
*2
*2
I102664E01
PM–14
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM
INSPECTION PROCEDURE
(a) For manual transmission.
(1) Remove the back-up light switch.
(2) Measure the resistance of the switch.
Standard resistance
(3) Reinstall the back-up light switch.
(b) For automatic transmission.
(1) Disconnect the B35 park / neutral position switch
connector.
(2) Measure the resistance.
Standard resistance
(3) Reconnect the park / neutral position switch
connector.
NG
OK
1
INSPECT BACK-UP LIGHT SWITCH OR PARK/NEUTRAL POSITION SWITCH
1
2
Component Side:
Back-up Light Switch
I102381E01
Tester Connection
Switch Condition
Specified Condition
1 - 2
Pushed
Below 1
Ω
Not pushed
10 k
Ω or higher
Component Side:
RB
RL
Park / Neutral Position Switch
C110340E31
Tester Connection
Shift Position
Specified Condition
B35-2 (RB) - B35-1 (RL)
R
Below 1
Ω
B35-2 (RB) - B35-1 (RL)
Except R
10 k
Ω or higher
REPLACE BACK-UP LIGHT SWITCH OR
PARK/NEUTRAL POSITION SWITCH
PARK ASSIST / MONITORING – CLEARANCE SONAR SYSTEM
PM–15
PM
(a) Disconnect the B35 or B42 switch connector.
(b) Disconnect the E31clearance warning ECU connector.
(c) Measure the voltage of the wire harness side connector.
Standard voltage
For manual transmission:
For automatic transmission:
(d) Measure the resistance of the wire harness side
connectors.
Standard resistance
For manual transmission:
For automatic transmission:
(e) Reconnect the switch connector.
(f)
Reconnect the ECU connector.
NG
OK
2
CHECK HARNESS AND CONNECTOR (SWITCH - CLEARANCE WARNING ECU AND
BATTERY)
1
2
1 2 3 4 5 6
7 8 9 10 11 12
1
2
3
5 6
7
8 9
4
Wire Harness Side:
B35
RB
Back-up Light Switch Connector
Clearance Warning ECU Connector
Park / Neutral Position Switch Connector
Front View
Front View
Front View
B42
E31
RL
(For M/T)
(For A/T)
RL
I102665E01
Tester Connection
Switch Condition
Specified Condition
B42-2 - Body ground
Ignition switch ON
11 to 14 V
Tester Connection
Switch Condition
Specified Condition
B35-2 (RB) - Body
ground
Ignition switch ON
11 to 14 V
Tester Connection
Specified Condition
B42-1 - E31-8 (RL)
Below 1
Ω
Tester Connection
Specified Condition
B35-1 (RL) - E31-8 (RL)
Below 1
Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
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