Lexus GS300/400 (2000 year). Service manual — part 49
N13471
1
2
I04152
Wire Harness Side
–
BODY ELECTRICAL
WIRELESS DOOR LOCK CONTROL SYSTEM
BE–159
2460
HINT:
When the temperature of the battery is low, the judge can
not be made correctly.
When the outcome of the test is less than 2.1 V, conduct
the test again after leaving the battery in the place at 18
°
C for more than 30 minutes.
By auto power off function, the voltage becomes no load
voltage (more than 2.5 V) condition 0.8 seconds after the
switch was pressed.
Make sure to read the voltage before of it.
High voltage might be shown 1 to 2 times after leaving the
battery, judge should be made with the voltage shown at
the 3rd time or later.
(g)
Disconnect the lead.
(h)
Set the battery (lithium battery) in the transmitter.
(i)
Install the cover, so that the O–ring is not distorted or
slipped off.
(j)
Using a screwdriver, tighten the screws.
3.
INSPECT WIRELESS DOOR LOCK BUZZER OPERA-
TION
Connect the positive (+) lead from the ohmmeter to terminal 1
and the negative (–) lead to terminal 2, and measure resistance
of approx. 1 k
Ω
.
If resistance is not as specified, replace the buzzer.
4.
INSPECT WIRELESS DOOR LOCK BUZZER CIRCUIT
(See page
5.
INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
(See page
Connector disconnected:
Disconnect the connector from the receiver and inspect the
connector on the wire harness side, as shown.
Tester connection
Condition
Specified condition
1 – Ground
Constant
Continuity
7 – Ground
Constant
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
I04153
From Back Side
BE–160
–
BODY ELECTRICAL
WIRELESS DOOR LOCK CONTROL SYSTEM
2461
6.
INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
Connector connected:
Connect the wire harness side connector to the receiver and in-
spect the wire harness side connector from the back side, as
shown.
Tester connection
Condition
Specified condition
3 – Ground
Ignition switch position OFF
Key removed
Transmitter OFF
→
ON
4.5 – 5.5 V
→
below 1 V
3 – Ground
Ignition switch position OFF
Key removed
Transmitter OFF
→
ON
4.5 – 5.5 V
→
below 1 V
4 – Ground
Ignition switch position OFF
Key removed
Transmitter ON
10 –14 V
If circuit is as specified, replace the receiver.
If the circuit is not as specified, inspect the circuits connected
to other parts.
BE0H5–06
I01348
Engine Room No.1
Junction Block
Engine Room No.2
Relay Block
Driver Side Junction Block
Engine Room No.3
Relay Block
Passenger Side Junction Block
BE–16
–
BODY ELECTRICAL
POWER SOURCE
2317
POWER SOURCE
LOCATION
The vehicle shown in this illustration is ”GS400”.
All components of ”GS300” other than the ones used for engine are same as ”GS400”.
I04026
Engine Room No.1 Junction Block
Fuses
Relays
1. MAIN H–Fuse
2. FL ABS NO.1 H–Fuse
3. ALT H–Fuse
4. ABS NO.2 H–Fuse
5. H–LP CLN H–Fuse
6. RAD NO.1 Fuse
7. ALT–S Fuse
8. EFI Fuse
9. TURN HAZ Fuse
10. TEL Fuse
11. AM2 Fuse
13. HORN Fuse
12. ETCS Fuse
14. MPX–B Fuse
15. ECU–B1 Fuse
16. HTR Fuse
B. Starter Relay
A. Headlight Control Relay
C. EFI Relay
17. FAN MAIN H–Fuse
18. CDS FAN H–Fuse
20. H–LP R LWR Fuse
19. RAD FAN H–Fuse
21. H–LP L LWR Fuse
22. H–LP R UPR Fuse
23. H–LP L UPR Fuse
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
17
19
20
21
22
23
A
B
C
–
BODY ELECTRICAL
POWER SOURCE
BE–17
2318
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