2001 TOYOTA PRIUS Service Repair Manual

AB0119H03354
H03364H08348
Airbag
Sensor
Assembly Front Airbag
Sensor (RH)
(+)
+SR
(±)
±SR
ON
Engine Room No. 2
Wire Harness
u"
H03354H03362H08349
Airbag
Sensor
Assembly Front Airbag
Sensor (RH)
(+)+SR
(±)±SR Engine Room No. 2
Wire Harness
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±623
2001 PRIUS (RM778U)
8 Check engine room No. 2 wire harness (to B+).
PREPARATION:
Disconnect the engine room No. 2 wire harness connector on
the airbag sensor assembly side.
CHECK:
(a) Turn the ignition switch to ON.
(b) For the connector (on the RH front door wire harness
side) between the airbag sensor assembly and the en-
gine room No. 2 wire harness, measure the voltage be-
tween body ground and each of +SR and ±SR.
OK:
Voltage: Below 1 V
NG Repair or replace engine room No. 2 wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room No.
2 wire harness.
9 Check engine room No. 2 wire harness (to ground).
PREPARATION:
Disconnect the engine room No. 2 wire harness connector on
the airbag sensor assembly side.
CHECK:
For the connector (on the engine room No. 2 wire harness side)
between the airbag sensor assembly and the engine room No.
2 wire harness, measure the resistance between body ground
and each of +SR and ±SR.
OK:
Resistance: 1 MW or Higher
NG Repair or replace engine room No. 2 wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room No.
2 wire harness.

H03354H09507H08351
Airbag
Sensor
Assembly
Front Airbag
Sensor (RH)
(±) +SR
±SR
Engine Room No. 2
Wire Harness
(+)
u "
DI±624
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
10 Check engine room No. 2 wire harness.
PREPARATION:
Disconnect the engine room No. 2 wire harness connector on
the airbag sensor assembly side.
CHECK:
For the connector (on the engine room No. 2 wire harness side)
between the airbag sensor assembly and the engine room No.
2 wire harness, measure the resistance between +SR and ±SR.
OK:
Resistance: 1 MW or Higher
NG Repair or replace engine room No. 2 wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room No.
2 wire harness.

H03352H09507H03360H08350
Airbag
Sensor
Assembly Front Airbag
Sensor (RH)
(+) +SR
(±)±SR
Engine Room No. 2
Wire Harness
+SR
±SR
u "
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±625
2001 PRIUS (RM778U)
11 Check engine room No. 2 wire harness.
PREPARATION:
(a) Disconnect the engine room No. 2 wire harness connec-
tor on the airbag sensor assembly side.
(b) Using a service wire, connect +SR and ±SR of the con-
nector (on the engine room No. 2 wire harness side) be-
tween the engine room No. 2 wire harness and the front
airbag sensor (RH).
CHECK:
For the connector (on the engine room No. 2 wire harness side)
between the airbag sensor assembly and the engine room No.
2 wire harness, measure the resistance between +SR and ±SR.
OK:
Resistance: Below 1 W
NG Repair or replace engine room No. 2 wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room No.
2 wire harness.

H16901
Airbag Sensor Assembly Front Airbag Sensor (LH)
+SL
±SL A1815
26 2
1 +SLIL1
±SL IL121
A18 W±R
BR
BR W±R DI±626
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
DTC B1158/B1159/16 Front Airbag Sensor (LH) Malfunction
CIRCUIT DESCRIPTION
The front airbag sensor (LH) circuit consists of the airbag sensor assembly and front airbag sensor (LH).
For details of the function of each component, see OPERATION on page RS±2.
DTC B1158/B1159/16 is recorded when malfunction is detected in the front airbag sensor (LH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1158/B1159/16
Front airbag sensor (LH) malfunction

Front airbag sensor (LH)

Airbag sensor assembly

Wire harness

Engine room main wire harness
WIRING DIAGRAM
DI6PX±06