Mitsubishi Montero (2002-2004). Manual — part 784
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-5
51
Driver's air bag module (squib ignition drive circuit) system
detected short circuit
52
Driver's air bag module (squib ignition drive circuit) system
detected open circuit
54
Passenger’s (front) air bag module (squib ignition drive
circuit) system detected short circuit
55
Passenger’s (front) air bag module (squib ignition drive
circuit) system detected open circuit
56
Driver’s seat belt pre-tensioner (squib ignition drive circuit)
system detected short
57
Driver’s seat belt pre-tensioner (squib ignition drive circuit)
system detected open
58
Passenger’s (front) seat belt pre-tensioner (squib ignition
drive circuit) system detected short
59
Passenger’s (front) seat belt pre-tensioner (squib ignition
drive circuit) system detected open
61
Driver's air bag module (squib) system fault for power
supply circuit (Short-circuited to power supply)
62
Driver's s air bag module (squib) system fault for ground
circuit (Short-circuited to ground)
64
Passenger’s (front) air bag module (squib) system fault for
power supply circuit (Short-circuited to power supply)
65
Passenger’s (front) air bag module (squib) system fault for
ground circuit (Short-circuited to ground)
66
Driver's seat belt pre-tensioner (squib) system fault for
power supply circuit (Short-circuited to power supply)
67
Driver's seat belt pre-tensioner (squib) system fault for
ground circuit (Short-circuited to ground)
68
Passenger’s (front) pre-tensioner (squib) system fault for
power supply circuit (Short-circuited to power supply)
69
Passenger’s (front) pre-tensioner (squib) system fault for
ground circuit (Short-circuited to ground)
71*
2
Right hand side-airbag module (squib) system fault 1 (Short
circuit between terminals of the squib circuit)
72*
2
Right hand side-airbag module (squib) system fault 2 (Open
in the squib circuit)
73
Right hand side-airbag module (squib) system detected
short circuit
74
Right hand side-airbag module (squib) system detected
open circuit
75
Right hand side-airbag module (squib) system fault power
supply circuit (Short-circuited to power supply)
76
Right hand side-airbag module (squib) system fault ground
circuit (Short-circuited to ground)
DIAGNOSTIC
TROUBLE CODE
NO.
INSPECTION ITEM
REFERENCE PAGE
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-6
NOTE:
.
1. *1: If the vehicle condition returns to normal, the DTC will be automatically erased, and the SRS warning
light will return to normal.
2. *2: However, if no DTC resets, the SRS warning light will be switched off (The DTC will be retained).
3. If the vehicle has a discharged battery, it will store the DTC 41 or 42. When these DTC are read, check the
battery.
79
Left hand side-airbag module (squib) system fault 5 for
power supply circuit
81*
2
Left hand side-airbag module (squib) system fault 1 (Short
circuit between terminals of the squib circuit)
82*
2
Left hand side-airbag module (squib) system fault 2 (Open
in the squib circuit)
83
Left hand side-airbag module (squib) system fault 3 for
ignition drive circuit
84
Left hand side-airbag module (squib) system fault 4 for
ignition drive circuit
85
Left hand side-airbag module (squib) system fault power
supply circuit (Short-circuited to power supply)
86
Left hand side-airbag module (squib) system fault ground
circuit (Short-circuited to ground)
89
Right hand side-airbag module (squib) system fault 5 for
power supply circuit
91*
1
Left hand side-impact sensor power supply circuit system
92
Left hand side-impact sensor system for fault 1
93
Left hand side-airbag module (squib) system fault 6 for
communication system
94*
1
Right hand side-impact sensor power supply circuit system
95
Right hand side-impact sensor system for fault 1
96
Right hand side-airbag module (squib) system fault 6 for
communication system
DIAGNOSTIC
TROUBLE CODE
NO.
INSPECTION ITEM
REFERENCE PAGE
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-7
TROUBLE SYMPTOM CHART
M1524003400343
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC 11: Front impact sensor system circuit short
DTC 12: Front impact sensor system either circuit open or on power supply
DTC 13: Front impact sensor system detects either both are open or no power supply
SYMPTOMS
INSPECTION PROCEDURE NO. REFERENCE PAGE
Communication with scan tool MB991502 is not
possible (Communication with all systems is not
possible).
-
GROUP 13A,
DIAGNOSIS
Communication with scan tool MB991502 is not
possible (Communication is not possible with
SRS).
1
When the ignition switch is turned to the "ON"
position (engine stopped), the SRS warning
light does not illuminate.
Refer to DTC No.43.
After the ignition switch is turned to the "ON"
position the SRS warning light does not go off
within approximately seven seconds.
Refer to DTC No.43.
AC102902AB
Front Impact Sensor Circuit
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DIAGNOSIS
52Bb-8
.
CIRCUIT OPERATION
• When the left and right front impact sensors
detect a collision, the switches inside the sensors
turns ON.
• SRS-ECU judges how severe a collision is by
detecting signals from the front impact sensors
and the analog G-sensor. If the impact is over a
predetermined level, the SRS-ECU outputs an
ignition signal. At this time, if the safing G-sensor
is on, the SRS air bag will inflate.
.
DTC SET CONDITIONS
These DTC are set if there is abnormal resistance
between the input terminals of the front impact sen-
sors.
The most likely causes for these codes to be set are
shown in the table below:
.
TROUBLESHOOTING HINTS
• Malfunction of the front impact sensor
• Damaged wiring harnesses or connectors
• Malfunction of the SRS-ECU
AC204229
CONNECTOR: A-23
AB
A-23 (Y)
AC204228
CONNECTOR: A-30
AB
A-30 (Y)
AC204230
CONNECTOR : D-28
AB
D-28
ACX01478 AG
CONNECTOR: E-08
E-08 (Y)
DTC
SYMPTOMS
11
• Short circuit in front impact sensor or harness
• Short circuit in front impact sensor harness leading to the vehicle body
ground
• Short circuit in front impact sensor harness leading to the power supply
12
• Open circuit in either left or right from impact sensor or harness
• Short circuit in front impact sensor harness leading to the power supply
13
• Open circuit in both left and right front impact sensor or harness
• Short circuit in front impact sensor harness leading to the power supply
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