TOYOTA RAV4 2006 Service Repair Manual

SEAT BELT – SEAT BELT WARNING SYSTEMSB–13
SB
ON-VEHICLE INSPECTION
1. CHECK DRIVER SIDE SEAT BELT WARNING LIGHT
(a) Turn the ignition switch ON.
(b) When the driver side seat belt is not fastened, check
that the combination meter's driver side seat belt
warning light starts blinking.
(c) When the seat belt is fastened, check that the
combination meter's driver side seat belt warning
light turns off.
2. CHECK PASSENGER SIDE SEAT BELT WARNING
LIGHT
(a) Turn the ignition switch ON.
(b) When the front passenger seat belt is not fastened,
check that the heater control panel's front
passenger side seat belt warning light starts
blinking.
(c) When the front passenger seat belt is fastened,
check that the heater control panel's front
passenger side seat belt warning light turns off.
3. CHECK SEAT BELT WARNING BUZZER
(a) Turn the ignition switch ON.
(b) After turning the ignition switch ON, if the vehicle is
driven at 20 km/h (12.4 mph) or more and the driver
side or front passenger side seat belt is not
fastened, check that the combination meter's buzzer
sounds at 1.2 second intervals for 30 seconds.
(c) 30 seconds after the buzzer first sounds, check that
the buzzer sounds at 0.4 second intervals for 90
seconds.
(d) 120 seconds after the buzzer has first sounded,
check that the buzzer stops.
(e) After the buzzer has stopped, turn the ignition
switch OFF and then start the engine again. With
the driver side or front passenger side seat belt
unfastened, drive the vehicle at 20 km/h (12.4 mph)
or more. Check that the buzzer sounds.
(f) After the buzzer has stopped, fasten the driver side
or front passenger side seat belt, drive the vehicle at
20 km/h (12.4 mph) or more, and then unfasten the
seat belt. Check that the buzzer sounds.
(g) After the buzzer has stopped, move the shift lever to
R. Then move the shift lever to D and with the driver
side or front passenger side seat belt unfastened,
drive the vehicle at 20 km/h (12.4 mph) or more.
Check that the buzzer sounds.

SB–14SEAT BELT – SEAT BELT WARNING SYSTEM
SB
DESCRIPTION
When the ignition switch is ON, the center airbag sensor transmits front seat inner belt status signals to
the combination meter through the CAN bus line. If the driver seat belt is not fastened, the combination
meter blinks the driver side seat belt warning light. If the seat belt is fastened, the warning light goes off.
NOTICE:
The seat belt warning system uses the CAN bus line. Before troubleshooting the seat belt warning
system, perform "COMMUNICATION FUNCTION CHECK" by following "HOW TO PROCEED WITH
TROUBLESHOOTING" to confirm that the communication systems are normal.
Driver Side Seat Belt Warning Light does not Operate

SEAT BELT – SEAT BELT WARNING SYSTEMSB–15
SB
WIRING DIAGRAM
B129858E01

SB–16SEAT BELT – SEAT BELT WARNING SYSTEM
SB
INSPECTION PROCEDURE
(a) Select the Active Test, use the intelligent tester to
generate a control command, and then check that the
seat belt warning light operates.
Center airbag sensor:
OK:
Driver side seat belt warning light operates
normally.
NG
OK
1PERFORM ACTIVE TEST USING INTELLIGENT TESTER
Item Test Details Diagnosis Note
D-BELT REMIND D-SEAT BELT warning light
(OFF/ON)-
REPLACE COMBINATION METER
ASSEMBLY
REPLACE CENTER AIRBAG SENSOR ASSEMBLY

SEAT BELT – SEAT BELT WARNING SYSTEMSB–17
SB
DESCRIPTION
When the ignition switch is ON, the center airbag sensor transmits front seat inner belt status signals to
the combination meter through the CAN bus line. If the front passenger seat belt is not fastened, the
heater control panel (automatic A/C) or clock (manual A/C) blinks the front passenger seat belt warning
light. If the seat belt is fastened, the warning light goes off.
NOTICE:
The seat belt warning system uses the CAN bus line. Before troubleshooting the seat belt warning
system, perform "COMMUNICATION FUNCTION CHECK" by following "HOW TO PROCEED WITH
TROUBLESHOOTING" to confirm that the communication systems are normal.
Front Passenger Side Seat Belt Warning Light Malfunction

SB–18SEAT BELT – SEAT BELT WARNING SYSTEM
SB
WIRING DIAGRAM
B129859E01

SEAT BELT – SEAT BELT WARNING SYSTEMSB–19
SB
INSPECTION PROCEDURE
(a) Select the Active Test, use the intelligent tester to
generate a control command, and then check that the
seat belt warning light operates.
Center airbag sensor:
OK:
Passenger side seat belt warning light operates
normally.
OK
NG
(a) Check system.
B
A
(a) Disconnect the E23 panel connector.
(b) Measure the voltage and resistance of the wire harness
side connector.
Standard voltage
Standard resistance
NG
1PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Item Test Details Diagnostic Note
P-BELT REMIND P-SEAT BELT warning light
(OFF/ON)Confirm that the vehicle is stopped, engine
idling
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
2CHECK A/C TYPE
A/C type Proceed to
for Automatic air conditioning system A
for Manual air conditioning system B
Go to step 6
3CHECK HEATER CONTROL PANEL (POWER SOURCE CIRCUIT)
B130079E01
Tester Connection Condition Specified Condition
E23-1 (+B) - Body
groundAlways 10 to 14 V
E23-2 (IG+) - Body
groundIgnition switch ON 10 to 14 V
E23-3 (ACC) - Body
groundIgnition switch ON
(ACC)10 to 14 V
Tester Connection Specified Condition
E23-7 (GND) - Body ground Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR

SB–20SEAT BELT – SEAT BELT WARNING SYSTEM
SB
OK
(a) Disconnect the E23 panel connector.
(b) Disconnect the E19 meter connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
NG
OK
(a) Remove the heater control panel.
4CHECK WIRE HARNESS (HEATER CONTROL PANEL - COMBINATION METER
ASSEMBLY)
B130080E01
Tester Connection Specified Condition
E19-1 (PBLT) - E23-4 (PBEW) Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR
5INSPECT HEATER CONTROL PANEL

SEAT BELT – SEAT BELT WARNING SYSTEMSB–21
SB
(b) Apply battery voltage and check that the front passenger
side seat belt warning light illuminates.
OK
HINT:
When the battery's negative (-) lead is applied to terminal
4 and the positive (+) lead is applied to terminal 7, the
seat belt warning light does not illuminate.
NG
OK
(a) Disconnect the E22 clock connector.
(b) Measure the voltage and resistance of the wire harness
side connector.
Standard voltage
Standard resistance
NG
OK
(a) Disconnect the E22 clock connector.
B131601E01
Measurement Condition Specified Condition
Battery positive (+) - Terminal 4
Battery negative (-) - Terminal 7Front passenger side seat belt
warning light illuminates
REPLACE HEATER CONTROL PANEL
REPLACE COMBINATION METER ASSEMBLY
6CHECK CLOCK SUB-ASSEMBLY (POWER SOURCE CIRCUIT)
B130078E02
Tester Connection Condition Specified Condition
E22-1 (+B) - Body
groundAlways 10 to 14 V
B22-6 (ACC) - Body
groundIgnition switch ACC 10 to 14 V
E22-2 (IG+) - Body
groundIgnition switch ON 10 to 14 V
Tester Connection Specified Condition
E22-5 - Body ground Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR
7CHECK WIRE HARNESS (CLOCK - COMBINATION METER)

SB–22SEAT BELT – SEAT BELT WARNING SYSTEM
SB
(b) Disconnect the E19 meter connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
NG
OK
(a) Remove the clock.
(b) Apply battery voltage and check that the front passenger
side seat belt warning light illuminates.
OK
HINT:
When the battery's negative (-) lead is applied to terminal
3 and the positive (+) lead is applied to terminal 5, the
seat belt warning light does not illuminate.
NG
OK
B130081E01
Tester Connection Specified Condition
E22-3 (PBEW) - E19-1 (PBLT) Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR
8INSPECT CLOCK SUB-ASSEMBLY
B131600E01
Measurement Condition Specified Condition
Battery positive (+) - Terminal 3
Battery negative (-) - Terminal 5Front passenger side seat belt
warning light illuminates
REPLACE CLOCK SUB-ASSEMBLY
REPLACE COMBINATION METER ASSEMBLY