TOYOTA RAV4 2006 Service Repair Manual

RS–62SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
OK
(a) Disconnect the connectors from the center airbag sensor
and the front airbag sensor RH.
(b) Using a service wire, connect A29-2 (+SR) and A29-1 (-
SR) of connector E.
NOTICE:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
(c) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
2CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN)
C128662E01
Tester Connection Specified Condition
E45-29 (+SR) - E45-27 (-SR) Below 1
Go to step 7

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–63
RS
(a) Disconnect the service wire from connector E.
(b) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
3CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT)
C128663E01
Tester Connection Specified Condition
E45-29 (+SR) - E45-27 (-SR) 1 M
or higher
Go to step 8

RS–64SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
(a) Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
(b) Turn the ignition switch ON.
(c) Measure the voltage of the wire harness side connector.
Standard voltage
NG
OK
4CHECK FRONT AIRBAG SENSOR RH CIRCUIT (TO B+)
C128663E01
Tester Connection Specified Condition
E45-29 (+SR) -Body ground Below 1 V
E45-27 (-SR) - Body ground Below 1 V
Go to step 9

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–65
RS
(a) Turn the ignition switch OFF.
(b) Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
(c) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
5CHECK FRONT AIRBAG SENSOR RH CIRCUIT (TO GROUND)
C128663E01
Tester Connection Specified Condition
E45-29 (+SR) - Body ground 1 M
or higher
E45-27 (-SR) - Body ground 1 M
or higher
Go to step 10

RS–66SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
(a) Connect the connectors to the center airbag sensor .
(b) Interchange the front airbag sensor RH and LH, and
connect the connectors to them.
(c) Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
(d) Turn the ignition switch ON, and wait for at least 60
seconds.
(e) Clear the DTCs (see page RS-49).
(f) Turn the ignition switch OFF.
(g) Turn the ignition switch ON, and wait for at least 60
seconds.
(h) Check the DTCs (see page RS-49).
Result
HINT:
DTCs other than DTC B1602/83, B1603/83, B1612/83,
B1613/83, B1607/84, B1608/84, B1617/84 and B1618/
84 may be output at this time, but they are not related to
this check.
B
C
A
6CHECK FRONT AIRBAG SENSOR RH
C128735E01
Result Proceed to
DTC B1602/83, B1603/83, B1612/83,
B1613/83, B1607/84, B1608/84, B1617/
84 and B1618/84 are not output.A
DTC B1602/83, B1603/83, B1612/83
and B1613/83 are outputB
B1607/84, B1608/84, B1617/84 and
B1618/84 are outputC
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
REPLACE FRONT AIRBAG SENSOR RH
USE SIMULATION METHOD TO CHECK

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–67
RS
(a) Disconnect the service wire from connector E.
(b) Disconnect the engine room main wire connector from
the instrument panel wire.
(c) Using a service wire, connect AE9-2 (+SR) and AE9-1 (-
SR) of connector D.
NOTICE:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
(d) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
7CHECK ENGINE ROOM MAIN WIRE (OPEN)
C128665E01
Tester Connection Specified Condition
A29-2 (+SR) - A29-1 (-SR) Below 1
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

RS–68SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
(a) Disconnect the engine room main wire connector from
the instrument panel wire.
(b) Disconnect the service wire from connector E.
(c) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
8CHECK ENGINE ROOM MAIN WIRE (SHORT)
C128736E01
Tester Connection Specified Condition
AE9-1 (+SR) - AE9-2 (-SR) 1 M
or higher
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–69
RS
(a) Turn the ignition switch OFF.
(b) Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
(c) Disconnect the engine room main wire connector from
the instrument panel wire.
(d) Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
(e) Turn the ignition switch ON.
(f) Measure the voltage of the wire harness side connector.
Standard voltage
NG
OK
9CHECK ENGINE ROOM MAIN WIRE (TO B+)
C128736E01
Tester Connection Specified Condition
AE9-1 (+SR) - Body ground Below 1 V
AE9-2 (-SR) - Body ground Below 1 V
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

RS–70SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
(a) Disconnect the engine room main wire connector from
the instrument panel wire.
(b) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
10CHECK ENGINE ROOM MAIN WIRE (TO GROUND)
C128736E01
Tester Connection Specified Condition
AE9-1 (+SR) - Body ground 1 M
or higher
AE9-2 (-SR) - Body ground 1 M
or higher
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–71
RS
DESCRIPTION
The front airbag sensor LH consists of the diagnostic circuit and the frontal deceleration sensor.
If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or
not the SRS should be activated.
DTC B1607/84, B1608/84, B1617/84 or B1618/84 is recorded when a malfunction is detected in the front
airbag sensor LH circuit.
DTC B1607/84Lost Communication with Front Satellite Sen-
sor Bus LH
DTC B1608/84Front Satellite Sensor Bus LH Initialization
Incomplete
DTC B1617/84Lost Communication with Front Airbag Sensor
LH
DTC B1618/84Front Airbag Sensor LH Initialization Incom-
plete
DTC No. DTC Detection Condition Trouble Area
B1607/84
B1608/84
B1617/84
B1618/84When one of following conditions is met:
• Center airbag sensor detects line short
signal, open signal, short to ground signal
or short to B+ signal in the front airbag
sensor LH circuit for 2 seconds.
• Front airbag sensor LH malfunction
• Center airbag sensor malfunction• Instrument panel wire
• Engine room main wire
• Front airbag sensor LH
• Center airbag sensor