Lexus RX300 (MCU15). Service manual — part 270
DI–312
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
LEXUS RX300 (RM785E)
DTC No.
(See Page)
Detection Item
Trouble Area
SRS
Warning Light
B0117/45
(DI–368)
S Short in side squib (LH) circuit
(to ground)
S Side airbag assembly LH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0118/46
(DI–371)
S Short in side squib (LH) circuit
(to B+)
S Side airbag assembly LH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0130/63
(DI–374)
S Short in P/T squib (RH) circuit
S Seat belt pretensioner RH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0131/64
(DI–378)
S Open in P/T squib (RH) circuit
S Seat belt pretensioner RH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0132/61
(DI–381)
S Short in P/T squib (RH) circuit
(to ground)
S Seat belt pretensioner RH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0133/62
(DI–384)
S Short in P/T squib (RH) circuit
(to B+)
S Seat belt pretensioner RH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0135/73
(DI–387)
S Short in P/T squib (LH) circuit
S Seat belt pretensioner LH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0136/74
(DI–391)
S Open in P/T squib (LH) circuit
S Seat belt pretensioner LH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0137/71
(DI–394)
S Short in P/T squib (LH) circuit
(to ground)
S Seat belt pretensioner LH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B0138/72
(DI–397)
S Short in P/T squib (LH) circuit
(to B+)
S Seat belt pretensioner LH (squib)
S Airbag sensor assembly
S Wire harness
Blink
B1100/31
(DI–400)
S Airbag sensor assembly malfunction
S Airbag sensor assembly
ON
B1140/32
(DI–402)
S Side airbag sensor assembly (RH)
malfunction
S Side airbag sensor assembly (RH)
S Airbag sensor assembly
S Wire harness
Blink
B1141/33
(DI–410)
S Side airbag sensor assembly (LH)
malfunction
S Side airbag sensor assembly (LH)
S Airbag sensor assembly
S Wire harness
Blink
B1156/B1157/
15
(DI–418)
S Front airbag sensor (RH) malfunction
S Front airbag sensor (RH)
S Airbag sensor assembly
S Instrument panel wire harness
S Engine room No. 2 wire harness
ON
B1158/B1159/
16
(DI–426)
S Front airbag sensor (LH) malfunction
S Front airbag sensor (LH)
S Airbag sensor assembly
S Instrument panel wire harness
ON
Normal
S System normal
–
OFF
Normal
(DI–431)
S Voltage source drop
S Battery
S Airbag sensor assembly
ON
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–313
LEXUS RX300 (RM785E)
HINT:
S
When the SRS warning light remains lit up and the DTC is the normal code, this means a voltage source
drops.
This malfunction is not stored in memory by the airbag sensor assembly and if the power source volt-
age returns to normal, the SRS warning light will automatically go out.
S
When 2 or more codes are indicated, the codes will be displayed in numeral order starting from the
lowest numbered code.
S
If a code not listed on the chart is displayed, the airbag sensor assembly is faulty.
DI6P0–07
H05133
Spiral Cable
Combination Meter
(Warning Light)
Front Passenger Airbag Assembly
Side Airbag Assembly (RH)
Side Airbag Sensor
Assembly (RH)
Seat Belt Pretensioner (RH)
Steering Wheel Pad
(with Airbag)
Side Airbag Sensor
Assembly (LH)
Seat Belt
Pretensioner (LH)
Side Airbag Assembly (LH)
Airbag Sensor Assembly
Front Airbag Sensor (RH)
Front Airbag
Sensor (LH)
DI–314
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
LEXUS RX300 (RM785E)
PARTS LOCATION
DI6P1–08
H01357
A28
A27
A29
28
7
8
9
10
16
17
18
A
B
1
2
3
4
5
6
11
12
15 14
13
A
A
B
B
19
20
21
22
23
24
25
26
27
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–315
LEXUS RX300 (RM785E)
TERMINALS OF ECU
No.
Symbol
Terminal Name
A
–
Electrical Connector Check Mechanism
B
–
Electrical Connector Check Mechanism
A28 – 3
LA
SRS Warning Light
A28 – 5
IG2
Power Source
A28 – 6
IG1
Power Source
A28 – 9
+SR
Front Airbag Sensor (RH)
A28 – 10
P+
Squib (Passenger)
A28 – 11
P–
Squib (Passenger)
A28 – 12
SIL
Diagnosis
A28 – 13
D–
Squib (Driver)
A28 – 14
D+
Squib (Driver)
A28 – 15
+SL
Front Airbag Sensor (LH)
A28 – 19
Tc
Diagnosis
A28 – 20
–SR
Front Airbag Sensor (RH)
A28 – 23
GSW2
ECM
A28 – 26
–SL
Front Airbag Sensor (LH)
A28 – 27
E1
Ground
A28 – 28
E2
Ground
A27 – 1
PL–
Squib (Seat Belt Pretensioner, LH)
A27 – 2
PL+
Squib (Seat Belt Pretensioner, LH)
A27 – 5
SFL–
Squib (Side, LH)
A27 – 6
SFL+
Squib (Side, LH)
A27 – 7
VUPL
Side Airbag Sensor (LH)
A27 – 9
SSL+
Side Airbag Sensor (LH)
A27 – 10
FSL
Side Airbag Sensor (LH)
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