Lexus ES300 (1997 year). Manual — part 129
N21555
Front Door
Rear Door
3
2
N21544
Wire Harness Side
1
2
3
4
le–4–1–E
Z19531
Lock
A25
A12
BE–122
–
BODY ELECTRICAL
POWER DOOR LOCK CONTROL SYSTEM
1506
1997 LEXUS ES300 (RM511U)
(c)
Disconnect the leads from terminals.
(d)
Approximately 60 seconds later, reverse the polarity, and
check that the door lock moves to the LOCK position.
If operation is not as specified, replace the door lock assembly.
11.
INSPECT DOOR LOCK ASSEMBLY CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
4 – Ground
Constant
Continuity
1 – Ground
3 – Ground
Door lock manual switch OFF or LOCK
No voltage
1 – Ground
3 – Ground
Door lock manual switch UNLOCK
Battery positive voltage
2 – Ground
Door lock manual switch OFF or UNLOCK
No voltage
2 – Ground
Door lock manual switch LOCK
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
12.
Door Lock Signal:
INSPECT INTEGRATION RELAY OPERATION
HINT:
When the relay circuit is as specified, inspect the door lock sig-
nal.
(a)
Connect the positive (+) lead from the voltmeter to termi-
nal A12 and the negative (–) lead to terminal A25.
(b)
Set the door lock control switch to UNLOCK and check
that the voltage rises from 0 V to battery positive voltage
for approximately 0.2 seconds.
Z19532
Unlock
A25
A12
–
BODY ELECTRICAL
POWER DOOR LOCK CONTROL SYSTEM
BE–123
1507
1997 LEXUS ES300 (RM511U)
(c)
Reverse the polarity of the voltmeter leads.
(d)
Set the door lock control switch to LOCK and check that
the voltage rises from 0 V to battery positive voltage for
approximately 0.2 seconds.
If operation is not as specified, replace the relay.
13.
INSPECT INTEGRATION RELAY CIRCUIT
(See page
Z19375
Ignition Switch
Instrument Panel Junction Block
GAUGE Fuse
POWER Fuse
DOOR Fuse
Power Main Relay
Integration Relay
Sliding Roof Switch
Sliding Roof Control Relay
Sliding Roof Motor
LImit Switch
Engine Room Junction Block
DOME Fuse
BE05Q–01
BE–124
–
BODY ELECTRICAL
SLIDING ROOF SYSTEM
1508
1997 LEXUS ES300 (RM511U)
SLIDING ROOF SYSTEM
LOCATION
BE05R–01
N21643
Wire Harness Side
1 2
3
4
5 6 7
8
s–8–1
N21993
1
2
N21994
2
1
–
BODY ELECTRICAL
SLIDING ROOF SYSTEM
BE–125
1509
1997 LEXUS ES300 (RM511U)
INSPECTION
1.
INSPECT SLIDING ROOF CONTROL RELAY AND
SWITCH CIRCUIT
Disconnect the connector from the relay and switch and inspect
the connector on the wire harness side, as shown in the chart.
Tester connection
Condition
Specified condition
1 – 5
Constant
Continuity
2 – Ground
Constant
Continuity
3 – Ground
No.1 limit switch OFF (Sliding roof closed)
No continuity
3 – Ground
No.1 limit switch ON (Sliding roof opened)
Continuity
7 – Ground
No.2 limit switch OFF (Sliding roof tilted up or
open approx. 200 mm (7.87 in.))
No continuity
7 – Ground
No.2 limit switch ON (Except for conditions
mentioned above)
Continuity
4 – Ground
Ignition switch LOCK or ACC
*No voltage
Ignition switch ON
Battery positive voltage
*Exceptions: For 60 seconds after the ignition switch is turned
ON
→
OFF (ACC) or until driver or passenger door is opened
after the ignition switch is turned ON
→
OFF (ACC).
If the circuit is as specified, replace the relay and switch.
2.
INSPECT SLIDING ROOF MOTOR OPERATION
(a)
Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2, check that the
motor turns counterclockwise (moves of the close and up
side).
(b)
Reverse the polarity, check that the motor turns clock-
wise. (moves of the open and down side).
If operation is not as specified, replace the motor.
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