Page 309 of 1897
- BODY ELECTRICALTROUBLESHOOTING
BE-5
1609 Author: Date:
2001 AVALON (RM808U) Seat Belt warning light does not light up.
1. Bulb
2. Body Control System
3. Meter Circuit Plate
4. Wire Harness-
DI-615
BE-53
-
Discharge warning light does not light up.
1. AM2 - Fuse
2. Bulb
3. Meter Circuit Plate
4. Wire Harness
5. Generator-
-
BE-53
-
CH-9
Light Failure warning light does not light up.
1. Bulb
2. Light Failure Sensor
3. Bulb Check Relay
4. Wire Harness
5. Taillight System-
BE-53
BE-53
-
BE-2
Brake warning light does not light up.
1. Bulb
2. Parking Brake Switch
3. Brake Fluid Level Warning Switch
4. Bulb Check Relay
5. Meter Circuit Plate
6. Wire Harness-
BE-53
BE-53
BE-53
BE-43
-
SRS Warning light does not light up.
1. AM2 - Fuse
2. Bulb
3. Airbag Sensor Assembly
4. Meter Circuit Plate
5. Wire Harness-
-
RS-62
RS-67
BE-43
Open Door warning light does not light up.
1. DOME Fuse
2. Bulb
3. Door Courtesy Switch
4. Body Control System
5. Meter Circuit Plate
6. Wire Harness-
-
BE-31
DI-615
BE-43
-
Washer Level warning light does not light up.
1. Bulb
2. Washer Fluid Level Warning Switch
3. Meter Circuit Plate
4. Wire Harness-
BE-53
BE-43
-
COMBINATION METER (Indicator Lights):
SymptomSuspect AreaSee page
O/D OFF indicator light does not light up.
1. Bulb
2. O/D OFF Switch
3. ECM
4. Meter Circuit Plate
5. Wire Harness-
DI-203
DI-1
BE-43
-
Cruise Control indicator light does not light up.
1. Bulb
2. Cruise Control ECU
3. Meter Circuit Plate
4. Wire Harness-
DI-549
BE-43
-
High beam indicator light does not light up.
1. Bulb and Taillight
2. Headlight System
3. Meter Circuit Plate
4. Wire Harness-
BE-2
BE-43
-
Turn indicator light does not light up.
1. Bulb
2. Turn Signal and Hazard Warning System
3. Meter Circuit Plate
4. Wire Harness-
BE-2
BE-43
-
Page 358 of 1897
BO2QC-01
BO-1 18
- BODYFRONT SEAT (Manual Adjuster Type)
1903 Author: Date:
2001 AVALON (RM808U)
INSTALLATION
INSTALL FRONT SEAT
(a) Slide the front seat to the frontmost position.
NOTICE:
Make sure that the seat adjuster locks.
(b) Without holding the seat track handle, mount the seat to the vehicle.
HINT:
If holding the seat track handle, the adjusted frontmost positions will slip off.
(c) Connect the airbag connector.
(d) Tighten the bolts on the rear side temporarily, tighten them completely starting from the bolt on the inner
side.
Torque: 37 N´m (375 kgf´cm, 27 ft´lbf)
(e) Slide the seat to the rearmost position to install the bolts on the front side.
Torque: 37 N´m (375 kgf´cm, 27 ft´lbf)
Page 1211 of 1897
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-475
631 Author: Date:
2001 AVALON (RM808U)
DTC Normal Source Voltage Drop
CIRCUIT DESCRIPTION
The SRS is equipped with a voltage-increase circuit (DC-DC converter) in the airbag sensor assembly in
case the source voltage drops.
When the battery voltage drops, the voltage-increase circuit (DC-DC converter) functions to increase the
voltage of the SRS to normal voltage.
The diagnosis system malfunction display for this circuit is different from other circuits that is when the SRS
warning light remains lit up and the DTC is a normal code, source voltage drop is indicated.
Malfunction in this circuit is not recorded in the airbag sensor assembly, and the source voltage returns to
normal, the SRS warning light automatically goes off.
DTC No.Diagnosis
(Normal)Source voltage drop
DI1NV-16
Page 1214 of 1897
AB0119H01298H01299
Airbag Sensor Assembly
ON
ACC
IG2
(+) (-)
H01249
ON
DI-478
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
634 Author: Date:
2001 AVALON (RM808U)
2 Check source voltage.
PREPARATION:
Connect negative (-) terminal cable to the battery.
CHECK:
(a) Turn ignition switch ON.
(b) Measure the voltage between body ground and each of
IG2 and ACC on the sensor and operate electric system
(defogger, wiper, headlight, heater blower, etc.).
OK:
Voltage: 10 - 14 V
NG Check harness between battery and airbag sen-
sor assembly, and check battery and charging
system.
OK
3 Does SRS warning light turn off?
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Connect the steering wheel pad connector.
(c) Connect the front passenger airbag assembly connector.
(d) Connect the side airbag assembly connectors.
(e) Connect the seat belt pretensioner connectors.
(f) Connect the airbag sensor assembly connectors.
(g) Connect the front airbag sensor connectors.
(h) Connect the side airbag sensor assembly connectors.
(i) Turn the ignition switch to ON.
CHECK:
Operate electric system (defogger, wiper, headlight, heater
blower, etc.) and check that SRS warning light goes off.
NO Check for DTCs. If a DTC is output, perform trou-
bleshooting for the DTC. If a normal code is out-
put, replace airbag sensor assembly.
YES
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1215 of 1897
H12004
Battery10Airbag Sensor Assembly
LA
C63
B-Y 5 12
1F 1A1I
II2
B-Y 5 B-Y
5 AB DLC1
B-Y
56 M7
SRS Warning Light
LG-B
IJ1 4
LG-B
2G 2B
SRS WRN
Engine Room J/BB
FL Block F7
F6 1
1
B FL MAINDriver Side J/B
12
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-479
635 Author: Date:
2001 AVALON (RM808U)
SRS Warning Light Circuit Malfunction
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter.
When the SRS is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch is
turned from the LOCK position to ACC or ON position, and then turns off automatically.
If there is a malfunction in the SRS, the SRS warning light lights up to inform the driver of the abnormality.
When terminals Tc and E1 of the DLC1 are connected, the DTC is displayed by blinking the SRS warning
light.
WIRING DIAGRAM
DI5RJ-04
Page 1216 of 1897
AB0117H01293H01295
Airbag Sensor Assembly
LOCK
DI-480
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
636 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
Always lights up, when ignition switch is in LOCK position
1 Prepare for inspection (See step 1 on page DI-475).
2 Does SRS warning light turn off?
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Connect negative (-) terminal cable to the battery.
CHECK:
Check operation of SRS warning light.
NO Check SRS warning light circuit or terminal AB
circuit of DLC1.
YES
Replace airbag sensor assembly.
Page 1226 of 1897
DI-356
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
512 Author: Date:
2001 AVALON (RM808U)DTC No.
(See Page)
Detection ItemTrouble AreaSRS
Warning Light
B0117/45
(DI-412)Short in side squib (LH) circuit
(to ground)Side airbag assembly LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0118/46
(DI-415)Short in side squib (LH) circuit
(to B+)Side airbag assembly LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0130/63
(DI-418)Short in P/T squib (RH) circuitSeat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0131/64
(DI-422)Open in P/T squib (RH) circuitSeat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0132/61
(DI-425)Short in P/T squib (RH) circuit
(to ground)Seat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0133/62
(DI-428)Short in P/T squib (RH) circuit
(to B+)Seat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0135/73
(DI-431)Short in P/T squib (LH) circuitSeat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0136/74
(DI-435)Open in P/T squib (LH) circuitSeat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0137/71
(DI-438)Short in P/T squib (LH) circuit
(to ground)Seat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0138/72
(DI-441)Short in P/T squib (LH) circuit
(to B+)Seat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B1100/31
(DI-444)Airbag sensor assembly malfunctionAirbag sensor assemblyON
B1140/32
(DI-446)Side airbag sensor assembly (RH)
malfunctionSide airbag sensor assembly (RH)
Airbag sensor assembly
Wire harness
Blink
B1141/33
(DI-454)Side airbag sensor assembly (LH)
malfunctionSide airbag sensor assembly (LH)
Airbag sensor assembly
Wire harness
Blink
B1156/B1157/
15
(DI-462)Front airbag sensor (RH) malfunctionFront airbag sensor (RH)
Airbag sensor assembly
Wire harness
ON
B1158/B1159/
16
(DI-467)Front airbag sensor (LH) malfunctionFront airbag sensor (LH)
Airbag sensor assembly
Instrument panel wire harness
Engine room main wire harness
ON
NlSystem normal-OFFNormal
(DI-475)Voltage source dropBattery
Airbag sensor assemblyON
Page 1230 of 1897
H11969
DI1MZ-1 1
R13006
DLC1
E1 Tc
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-349
505 Author: Date:
2001 AVALON (RM808U)
PRE-CHECK
1. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to the ACC or ON position and
check that the SRS warning light lights up.
(b) Check that the SRS warning light goes out after approx.
6 seconds.
HINT:
When the ignition switch is at ACC or ON and the SRS
warning light remains on or flashes, the airbag sensor as-
sembly has detected a malfunction code.
If, after approx. 6 seconds have elapsed, the SRS warn-
ing light sometimes lights up or the SRS warning light
lights up even when the ignition switch is OFF, a short in
the SRS warning light circuit can be considered likely.
Proceed to ºSRS warning light circuit malfunctionº on
page DI-479.
2. DTC CHECK (Using diagnosis check wire)
(a) Present troubles codes:
Output the DTC.
(1) Turn the ignition switch to the ACC or ON position
and wait for approx. 20 seconds.
(2) Using SST, connect terminals Tc and E1 of the
DLC1.
SST 09843-18020
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
(b) Past troubles codes:
Output the DTC.
(1) Using service wire, connect terminals Tc and E1 of
the DLC1.
SST 09843-18020
(2) Turn the ignition switch to the ACC or ON position
and wait for approx. 20 seconds.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
