engine TOYOTA RAV4 2006 Service Repair Manual

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

RS–78SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
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 AE5-1 (+SL) and AE5-2 (-
SL) 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)
C128665E02
Tester Connection Specified Condition
A15-2 (+SL) - A15-1 (-SL) Below 1
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–79
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
8CHECK ENGINE ROOM MAIN WIRE (SHORT)
C128736E02
Tester Connection Specified Condition
AE5-1 (+SL) - AE5-2 (-SL) 1 M
or higher
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

RS–80SUPPLEMENTAL 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) 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+)
C128736E02
Tester Connection Specified Condition
AE5-1 (+SL) - Body ground Below 1 V
AE5-2 (-SL) - Body ground Below 1 V
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–81
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)
C128736E02
Tester Connection Specified Condition
AE5-1 (+SL) - Body ground 1 M
or higher
AE5-2 (-SL) - Body ground 1 M
or higher
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE

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

RS–84SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
DESCRIPTION
The front airbag sensor LH consists of the diagnostic circuit, the frontal deceleration sensor, etc.
If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or
not the SRS should be activated.
DTC B1615/14 is recorded when a malfunction is detected in the front airbag sensor LH circuit.
WIRING DIAGRAM
DTC B1615/14 Front Airbag Sensor LH Circuit Malfunction
DTC No. DTC Detection Condition Trouble Area
B1615/14When one of following conditions is met:
• Front airbag sensor LH malfunction
• Center airbag sensor malfunction• Engine room main wire
• Front airbag sensor LH
• Center airbag sensor
C123527E11