Lexus ES300 (1997 year). Manual — part 128
Z19372
Door Lock Control Switch
Ignition Switch
Power Window Master Switch
DOOR Lock Control Switch
Instrument Panel Junction Block
DOOR Fuse
ECU–IG Fuse
Integration Relay
Door Key Lock and Unlock Switch
Door Lock Assembly
Door Lock Motor
Door Unlock Detection Switch
Door Lock Assembly
Door Lock Motor
Door Unlock Detection Switch
BE05O–01
BE–118
–
BODY ELECTRICAL
POWER DOOR LOCK CONTROL SYSTEM
1502
1997 LEXUS ES300 (RM511U)
POWER DOOR LOCK CONTROL SYSTEM
LOCATION
BE05P–01
N21194
1
2
3
4
5
6
7
8
9
10
11
12
13
14
N21374
Wire Harness Side
1 2 3
4 5 6
7 8 9 101112 1314
s–14–1–B
N21519
1
2
3
4
5
–
BODY ELECTRICAL
POWER DOOR LOCK CONTROL SYSTEM
BE–119
1503
1997 LEXUS ES300 (RM511U)
INSPECTION
1.
Master Switch:
INSPECT DRIVER’S DOOR LOCK CONTROL SWITCH
CONTINUITY
Switch position
Tester connection
Specified condition
LOCK
1 – 4
Continuity
OFF
–
No continuity
UNLOCK
1 – 3
Continuity
If continuity is not as specified, replace the switch.
2.
Master Switch:
INSPECT DRIVER’S DOOR LOCK CONTROL SWITCH
CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
1 – Ground
Constant
Continuity
3 – Ground
Constant
Battery positive voltage
4 – Ground
Constant
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
3.
INSPECT PASSENGER’S DOOR LOCK CONTROL
SWITCH CONTINUITY
Switch position
Tester connection
Specified condition
LOCK
2 – 3
Continuity
OFF
–
No continuity
UNLOCK
1 – 2
Continuity
If continuity is not as specified, replace the switch.
N21542
Wire Harness Side
1 2 3 4 5
e–5–1
N20569
UNLOCK
OFF
LOCK
1
2
3
N21543
Wire Harness Side
1
2
3
h–3–1–C
BE–120
–
BODY ELECTRICAL
POWER DOOR LOCK CONTROL SYSTEM
1504
1997 LEXUS ES300 (RM511U)
4.
INSPECT PASSENGER’S DOOR LOCK CONTROL
SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
2 – Ground
Constant
Continuity
1 – Ground
Constant
Battery positive voltage
3 – Ground
Constant
Battery positive voltage
4 – Ground
Ignition switch position LOCK or ACC
No voltage
4 – Ground
Ignition switch position ON
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
5.
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch position
Tester connection
Specified condition
LOCK
1 – 2
Continuity
OFF
–
No continuity
UNLOCK
1 – 3
Continuity
If continuity is not as specified, replace the switch.
6.
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
1 – Ground
Constant
Continuity
2 – Ground
Constant
Battery positive voltage
3 – Ground
Constant
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
N20673
Lock
Unlock
4
1
N20570
3
2
2
3
N21554
3
Front Door
Rear Door
2
N21555
Front Door
3
2
Rear Door
N21556
3
Front Door
Rear Door
2
–
BODY ELECTRICAL
POWER DOOR LOCK CONTROL SYSTEM
BE–121
1505
1997 LEXUS ES300 (RM511U)
7.
INSPECT DOOR UNLOCK DETECTION SWITCH CON-
TINUITY
Switch position
Tester connection
Specified condition
OFF (Door Lock set to
LOCK)
–
No continuity
ON (Door Lock set to
UNLOCK)
1 – 4
Continuity
If continuity is not as specified, replace the switch.
8.
INSPECT MOTOR OPERATION
(a)
Connect the positive (+) lead from the battery to terminal
3 and the negative (–) lead to terminal 2, and check that
the door lock link moves to UNLOCK position.
(b)
Reverse the polarity and check that the door lock link
moves to LOCK position.
If operation is not as specified, replace the door lock assembly.
9.
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter)
(a)
Connect the positive (+) lead from the battery to terminal
3.
(b)
Connect the positive (+) lead from the ammeter to termi-
nal 2 and the negative (–) lead to battery negative (–) ter-
minal, and check that the current changes from approxi-
mately 3.2 A to less than 0.5 A within 20 to 70 seconds.
(c)
Disconnect the leads from terminals.
(d)
Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (–)
lead to terminal 3, and check that the door lock moves to
the LOCK position.
If operation is not as specified, replace the door lock assembly.
10.
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter with a current–measuring probe)
(a)
Connect the positive (+) lead from the battery to terminal
3 and the negative (–) lead to terminal 2.
(b)
Attach a current–measuring probe to either the positive
(+) lead or the negative (–) lead, and check that the cur-
rent changes from approximately 3.2 A to less than 0.5 A
within 20 to 70 seconds.
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