sensor TOYOTA RAV4 2006 Service Repair Manual

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–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

RS–72SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Turn the ignition switch OFF.
(b) Disconnect the cable from the negative (-) terminal, and
wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the
center airbag sensor and the front airbag sensor LH.
OK:
The connectors are properly connected.
NG
OK
1CHECK CONNECTION OF CONNECTOR
C123527E02
CONNECT CONNECTOR

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–73
RS
(a) Disconnect the connectors from the center airbag sensor
and the front airbag sensor LH.
(b) Using a service wire, connect A15-2 (+SL) and A15-1 (-
SL) 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 LH CIRCUIT (OPEN)
C128662E02
Tester Connection Specified Condition
E45-30 (+SL) - E45-28 (-SL) Below 1
Go to step 7

RS–74SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
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 LH CIRCUIT (SHORT)
C128663E02
Tester Connection Specified Condition
E45-30 (+SL) - E45-28 (-SL) 1 M
or higher
Go to step 8

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–75
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
connectors.
Standard voltage
NG
OK
4CHECK FRONT AIRBAG SENSOR LH CIRCUIT (TO B+)
C128663E02
Tester Connection Specified Condition
E45-30 (+SL) - Body ground Below 1 V
E45-28 (-SL) - Body ground Below 1 V
Go to step 9

RS–76SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
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 LH CIRCUIT (TO GROUND)
C128663E02
Tester Connection Specified Condition
E45-30 (+SL) - Body ground 1 M
or higher
E45-28 (-SL) - Body ground 1 M
or higher
Go to step 10

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–77
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 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 LH
C128735E02
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 B1607/84, B1608/84, B1617/84
and B1618/84 are outputB
DTC B1602/83, B1603/83, B1612/83
and B1613/83 are outputC
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
REPLACE FRONT AIRBAG SENSOR LH
USE SIMULATION METHOD TO CHECK

RS–82SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
DESCRIPTION
The front airbag sensor RH consists of the diagnostic circuit, the frontal deceleration sensor, etc.
If the center airbag sensor assembly receives signals from the frontal deceleration sensor, it determines
whether or not the SRS should be activated.
DTC B1610/13 is recorded when a malfunction is detected in the front airbag sensor RH circuit.
WIRING DIAGRAM
DTC B1610/13 Front Airbag Sensor RH Circuit Malfunction
DTC No. DTC Detection Condition Trouble Area
B1610/13 When one of following conditions is met:
• Front airbag sensor RH malfunction
• Center airbag sensor malfunction• Engine room main wire
• Front airbag sensor RH
• Center airbag sensor
C123527E10