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BE-37
BODY ELECTRICAL - WIPER AND WASHER SYSTEM
BE1ZG-01
INSPECTION
1. INSPECT FRONT WIPER AND WASHER SWITCH
CONTINUITY
OFF
Switch position Tester connection Specified condition
INT
OFF 7 - 16 Continuity
LO INT 7 - 16 Continuity
LO 7 - 17 Continuity
HI
HI 8 - 17 Continuity
Washer ON 2 - 11 Continuity
If continuity is not as specified, replace the switch.
I03105
2. INSPECT INTERMITTENT OPERATION
7 2 (a) Turn the wiper switch to INT position.
(b) Turn the intermittent time control switch to FAST position.
(c) Connect the positive (+) lead from the battery to terminal
16 and the negative (-) lead to terminal 2.
(d) Connect the positive (+) lead from the voltmeter to termi-
nal 7 and the negative (-) lead to terminal 2, check that
16
the meter needle indicates battery positive voltage.
N10429
INT time control
switch position Voltage
Approx. 1-3 sec.
FAST Battery positive voltage
0 volt
Approx. 10-15 sec.
SLOW Battery positive voltage
0 volt
V03883
If operation is not as specified, replace the wiper and washer
switch.
2001 SIENNA (RM787U)
Author : Date : 1555
BE-38
BODY ELECTRICAL - WIPER AND WASHER SYSTEM
Washer2 3. INSPECT REAR WIPER AND WASHER SWITCH CON-
ON TINUITY
Switch position Tester connection Specified condition
INT
Washer 1 2 - 12 Continuity
OFF Wiper OFF - No continuity
Wiper INT 2 - 13 Continuity
Washer1
Wiper ON 2 - 10 Continuity
Washer 2 2 - 10 - 12 Continuity
I03106
If continuity is not as specified, replace the switch.
2 4. INSPECT WASHER LINKED OPERATION
(a) Connect the positive (+) lead from the battery to terminal
16 and the negative (-) lead to terminal 2.
(b) Connect the positive (+) lead from the voltmeter to termi-
7 nal 7 and the negative (-) lead to terminal 2.
16
(c) Push in the washer switch, and check that the voltage
changes as shown in the chart.
Washer Switch ON
N11243
OFF
Less than 1sec. Approx. .3sec.
Battery Voltage
0V
N11301
If operation is not as specified, replace the wiper and washer
switch.
5. Low Speed:
5 1
INSPECT FRONT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 5 and
the negative (-) lead from the battery to the terminal 1, and
check that the motor operates at low speed.
If operation is not as specified, replace the motor.
I03101
6. High Speed:
4 1 INSPECT FRONT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 4 and
the negative (-) lead from the battery to the terminal 1, and
check that the motor operates at high speed.
If operation is not as specified, replace the motor.
I03102
2001 SIENNA (RM787U)
Author : Date : 1556
BE-39
BODY ELECTRICAL - WIPER AND WASHER SYSTEM
7. Stopping at Stop Position:
5 1
INSPECT FRONT WIPER MOTOR OPERATION
(a) Operate the motor at low speed and stop the motor opera-
tion anywhere except at the stop position by disconnect-
ing positive (+) lead from terminal 5.
I03103
(b) Connect terminals 2 and 5.
5 2
(c) Connect the positive (+) lead from the battery to terminal
3 and the negative (-) lead from the battery to the terminal
1, and check that the motor stops running at the stop posi-
tion after the motor has operated again.
3 1
If operation is not as specified, replace the motor.
I03104
8. Low speed:
2
INSPECT REAR WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 3 and
negative (-) lead to terminal 2, check that the motor operates
3 at low speed.
If operation is not as specified, replace the motor.
I07970
9. Stopping at stop position:
2
INSPECT REAR WIPER MOTOR OPERATION
(a) Operate the motor at low speed and stop the motor opera-
3 tion anywhere except at the stop position by disconnect-
ing positive (+) lead from terminal 3.
I07971
2 1 (b) Connect terminals 3 and 4.
(c) Connect the positive (+) lead from the battery to terminal
1 and negative (-) lead to terminal 2, check that the motor
4 stops running at the stop position after the motor operates
again.
3
If operation is not as specified, replace the motor.
NOTICE:
These tests must be performed quickly (within 20 seconds) to
I07972 prevent the coil from burning out.
If operation is not as specified, replace the motor.
2001 SIENNA (RM787U)
Author : Date : 1557
BE-40
BODY ELECTRICAL - WIPER AND WASHER SYSTEM
10. INSPECT REAR WIPER RELAY CONTINUITY
Relay Side
Terminal Specified condition
3-4 No continuity
4-5 Continuity
If continuity is not as specified, replace the relay.
e-6-2-G I01702
11. INSPECT REAR WIPER RELAY OPERATION
No continuity (a) Connect the positive (+) lead from the battery to terminal
Continuity 3 and the negative (-) lead to terminal 4.
(b) Check continuity between terminals.
Terminal Specified condition
3-4 Continuity
4-5 No continuity
3 If continuity is not as specified, replace the relay.
12. INSPECT REAR WIPER RELAY INTERMITTENT OP-
ERATION
(a) Connect the positive (+) lead from the battery to terminal
5
4
3 and the negative (-) lead to terminal 2.
(b) Check continuity between terminal 3 and 4 is as illus-
Check continuity
between terminal 3 and 4.
trated.
If continuity is not as specified, replace the relay.
Continuity
No continuity
I21513
2
13. INSPECT WASHER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and
the negative (-) lead to terminal 1, check that the motor oper-
1 ates.
NOTICE:
These tests must be performed quickly (within 20 seconds)
to prevent the coil from burning out.
If operation is not as specified, replace the motor.
N21368
2001 SIENNA (RM787U)
Author : Date : 1558
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