MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 19: Identifying SRS Connector Locations (Single
-stage Air Bag System

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

Fig. 20: Identifying Data Link Connector (DLC) Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig. 21: Identifying SRS ECU Connector C
-25 & C
-26 Terminals (Single
-stage
Air Bag System)

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

Fig. 22: Identifying Connector C
-211 & C
-215 Locations

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DTC 1A, 1B, 1C, 1D: DRIVER-SIDE FRONT IMPACT SENSOR MALFUNCTION 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
Remove driver-side front impact sensor. See FRONT IMPACT SENSOR

under REMOVAL & INSTALLATION. Go to next step.
2. Inspect driver-side front impact sensor. See FRONT IMPACT SENSOR
under COMPONENT TESTING. If front impact sensor is okay, go to next
step. If front impact sensor is not okay, replace front impact sensor. Go to step
7 .
3. Disconnect SRS connector C-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 19
.
Disconnect driver-side front impact sensor connector A-21. Measure resistance
between SRS ECU connector C-26, terminal No. 3 (Black/Blue wire) and
terminal No. 4 (White/Blue wire) See Fig. 21
. Resistance should be infinite.
Measure resistance between
passen
ger-side front im
pact connector
A-21,

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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

terminal No. 1 (Black/Red wire) and terminal No. 2 (White/Red wire).
Resistance should be infinite. See Fig. 23
. Go to next step.
4. Measure resistance between ground and SRS ECU connector C-26, terminals
No. 3 and 4. Resistance should be infinite. Measure resistance between ground
and front impact sensor connector A-21, terminal No. 1 and 2. Resistance
should be infinite.
5. Connect negative battery cable. Measure voltage between ground and SRS
ECU connector C-26, terminals No. 1 and 2. Voltage should not be present.
Measure voltage between ground and front impact sensor connector A-21,
terminal No. 1 and 2. Voltage should not be present. If resistance and voltage
checks are not as specified, go to next step. If resistance and voltage checks are
as specified, go to step 7 .
6. Visually inspect wire harness between SRS ECU connector C-26 and driver-
side front impact sensor connector A-21, including connector C-31. If wire
harness and connectors are okay, go to next step. If wire harness and
connectors are damaged, replace wire harness. Go to next step.
7. Reconnect all SRS components. Using scan tool, check for DTCs. If DTC 1A,
1B, 1C or 1D is retrieved, replace SRS ECU. If DTC 1A, 1B, 1C or 1D is not
retrieved, system is normal at this time. Intermittent condition may exist.
Fig. 23: Identifying Connector A
-21 & A
-24 Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DTC 2A, 2B, 2C, 2D: PASSENGER-SIDE FRONT IMPACT SENSOR MALFUNCTION
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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
Remove passenger-side front impact sensor. See FRONT IMPACT SENSOR
under REMOVAL & INSTALLATION. Go to next step.
2. Inspect passenger-side front impact sensor. See FRONT IMPACT SENSOR

under COMPONENT TESTING. If front impact sensor is okay, go to next
step. If front impact sensor is not okay, replace front impact sensor. Go to step
7 .
3. Disconnect SRS connector C-24. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 19
.
Disconnect passenger-side front impact sensor connector A-24. Measure
resistance between SRS ECU connector C-24, terminal No. 1 (White/Red wire)
and No. 2 (Black/Red wire) See Fig. 21
. Resistance should be infinite.
Measure resistance between passenger-side front impact connector A-24,
terminal No. 1 (Black/Red wire) and No. 2 (White/Red wire). Resistance
should be infinite. See Fig. 23
. Go to next step.
4. Measure resistance between ground and SRS ECU connector C-24, terminals
No. 1 and 2. Resistance should be infinite. Measure resistance between ground
and front impact sensor connector A-24, terminal No. 1 and 2. Resistance
should be infinite.
5. Connect negative battery cable. Measure voltage between ground and SRS
ECU connector C-24, terminals No. 1 and 2. Voltage should not be present.
Measure voltage between ground and front impact sensor connector A-24,
terminal No. 1 and 2. Voltage should not be present. If resistance and voltage
checks are not as specified, go to next step. If resistance and voltage checks are
as specified, go to step 7 .
6. Visually inspect wire harness between SRS ECU connector C-24 and
passenger-side front impact sensor connector A-24. If wire harness and
connectors are okay, go to next step. If wire harness and connectors are
damaged, replace wire harness. Go to next step.
7. Reconnect all SRS components. Using scan tool, check for DTCs. If DTC 2A,
2B, 2C or 2D is retrieved, replace SRS ECU. If DTC 2A, 2B, 2C or 2D is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC 11
, 12 & 13: FRONT IMPACT SENSOR CIRCUIT

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1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
. Go
to next step.
2. Remove front impact sensors. See FRONT IMPACT SENSOR
under
REMOVAL & INSTALLATION. Inspect front impact sensors. See FRONT
IMPACT SENSOR
under COMPONENT TESTING. If front impact sensors
are okay, go to next step. If front impact sensors are not okay, replace front
impact sensors. Go to step 6 .
3. Install front impact sensors. Connect front impact sensor connectors.
Disconnect SRS ECU connector C-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 19
.
Measure resistance between SRS connector C-26, terminals No. 3 (Black/Blue
wire) and No. 4 (White/Blue wire). See Fig. 21
. If resistance is 738-902 ohms,
go to next step. If resistance is not 738-902 ohms, check wire harness between
SRS ECU connector C-26 and left front impact sensor connector A-21.
Replace wire harness, if damaged. Go to step 6 .
4. Measure resistance between SRS connector C-26, terminals No. 1 (White/Red
wire) and No. 2 (Black/Red wire). If resistance is not 738-902 ohms, go to next
step. If resistance is 738-902 ohms, replace SRS ECU. Go to step 6
.
5. Inspect wire harness between SRS ECU connector C-26 and right front impact
sensor connector A-27. If wire harness is okay, go to next step. Replace wire
harness, if damaged. Go to next step.
6. Reconnect SRS components. Activate air bag system. Using scan tool, check
for DTCs. If DTCs 11, 12 or 13 are retrieved by scan tool, go to step 1 . If
DTCs 11, 12 or 13 are not retrieved by scan tool, system is normal at this time.
Intermittent condition may exist.
DTC 14: ANALOG "G" SENSOR SYSTEM If DTC 14 is present, replace SRS ECU. See SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL & INSTALLATION.
DTC 15, 16, 17: SAFING SENSOR CIRCUIT If DTC 15, 16 or 17 is present, replace SRS ECU. See SRS ELECTRONIC CONTROL UNIT
(SRS ECU
)under REMOVAL & INSTALLATION.

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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

DTC 21: DRIVE
R-SIDE AIR BAG MODULE SHORT CIRCUIT
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. If DTC 34 is
retrieved, go to next step. If DTC 34 is not retrieved, go to step 3 .
2. Inspect SRS ECU connector C-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 19
. If
SRS ECU connector C-26 is connected correctly, go to next step. If SRS ECU
connector is not connected properly, install connector correctly. Go to step 8 .
3. Disconnect negative battery cable. Disconnect, then reconnect SRS ECU
connector C-26, lower clockspring connector C-307 and driver-side air bag
module connector C-305. See DRIVER
-SIDE AIR BAG MODULE &
CLOCKSPRING
under REMOVAL & INSTALLATION. Connect negative
battery cable. Using scan tool, erase then retrieve DTCs. If DTC 21 is
retrieved, go to next step. If DTC 21 is not retrieved, system is normal at this
time.
4. Disconnect negative battery cable. Connect Resistor Harness (MB991866) to
terminals of upper clockspring connector C-306 by backprobing connector.
Connect Load Resistor (MB991865) to resistor harness. Connect negative
battery cable. Using scan tool, erase then retrieve DTCs. If DTC 21 is
retrieved, go to next step. If DTC 21 is not retrieved, replace driver-side air bag
module. Go to step 8 .
5. Disconnect negative battery cable. Connect resistor harness and load resistor to
terminals No. 3 and 4 of clockspring connector C-307 by backprobing
connector. See Fig. 24
. Connect negative battery cable. Using scan tool, erase
then retrieve DTCs. If DTC 21 is retrieved, go to next step. If DTC 21 is not
retrieved, replace clockspring. Go to step 8 .
6. Disconnect SRS ECU connector C-26 and clockspring connector C-307. Insert
a cable tie or similar insulator between terminals No. 11 (Yellow/Black wire)
and No. 12 (Yellow wire) of SRS ECU connector to release shorting bar. See
Fig. 21
. Check for continuity between terminals No. 11 and 12. If continuity
exists, go to next step. If continuity does not exist, erase, then retrieve DTCs
using scan tool. If DTC 21 is retrieved, replace SRS ECU. Go to step 8 .
7. Check wire harness between SRS ECU connector C-26 and lower clockspring
connector C-307 for a short circuit. If wire harness is okay, go to next step. If
wire harness has a short circuit, replace wire harness. Go to next step

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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

8. Reconnect all SRS components. Activate air bag system. Using scan tool, erase
then retrieve DTCs. If DTC 21 is retrieved, go to step 1 . If DTC 21 is not
retrieved, system is normal at this time. Intermittent condition may exist.
Fig. 24: Identifying Connector C
-307

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DTC 22: DRIVER-SIDE AIR BAG MODULE OPEN CIRCUIT 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disconnect
negative battery cable. Disconnect driver-side air bag module connector C-305.
See DRIVER
-SIDE AIR BAG MODULE & CLOCKSPRING
under
REMOVAL & INSTALLATION. See Fig. 19
. Connect Load Resistor
(MB891865) to Resistor Harness (MB991866). Connect resistor harness to
upper clockspring connector C-306 by backprobing connector. Connect
negative battery cable. Using scan tool, retrieve DTCs. If DTC 22 is retrieved,

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2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

go to next step. If DTC 22 is not retrieved, replace driver-side air bag module.
Go to step 4 .
2. Disconnect negative battery cable. Disconnect clockspring connector C-307.
Connect resistor harness to clockspring connector C-307 by backprobing
connector terminals No. 3 and 4. See Fig. 24
. Connect negative battery cable.
Using scan tool, erase then retrieve DTCs. If DTC 22 is retrieved, go to next
step. If DTC 22 is not retrieved, replace clockspring. Go to step 4 .
3. Disconnect SRS ECU connector C-26 and clockspring connector C-307. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. Measure resistance between connector C-26, terminal No.
11 (Yellow/Black wire) and clockspring connector C-307, terminal No. 3.
Measure resistance between connector C-26, terminal No. 12 (Yellow wire)
and clockspring connector C-307, terminal No. 4. If resistance is less than 2
ohms in each circuit, recheck for DTCs. If DTC 22 is retrieved, replace SRS
ECU. Go to next step. If resistance is more than 2 ohms in either wire, replace
wire harness between SRS ECU and clockspring. Go to next step.
4. Reconnect all SRS components. Activate air bag system. Using scan tool, erase
then retrieve DTCs. If DTC 22 is retrieved, go to step 1 . If DTC 22 is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC 24: PASSENGER-SIDE AIR BAG MODULE SHORT CIRCUIT 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
. If
DTC 34 is retrieved, go to next step. If DTC 34 is not retrieved, go to step 3 .
2. Inspect SRS ECU connector C-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 19
. If
connector is not connected properly, connect properly. Go to step 7 . If
connector is connected properly, go to next step.
3. Disconnect negative battery cable. Disconnect, then reconnect passenger-side
air bag module connector C-09 and SRS ECU connector C-26. See
PASSENGER
-SIDE AIR BAG MODULE
under REMOVAL &
INSTALLATION. Connect negative battery cable. Using scan tool, erase then
retrieve DTCs. If DTC 24 is retrieved, go to next step. If DTC 24 is not
retrieved, s
ystem is normal at this time.

2004 Mitsubishi Endeavor Limited
2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

4. Disconnect negative battery cable. Disconnect passenger-side air bag connector
C-09. Connect Resistor Harness (MB991866) to connector C-09 by
backprobing connector. Connect Load Resistor (MB991865) to resistor
harness. Connect negative battery cable. Using scan tool, erase then retrieve
DTCs. If DTC 24, is retrieved, go to next step. If DTC 24 is not retrieved,
replace passenger-side air bag module. Go to step 7 .
5. Disconnect SRS ECU connector C-26. Disconnect passenger-side air bag
module connector C-09. Insert a cable tie or similar insulator between
terminals No. 9 (Yellow/Green wire) and No. 10 (Yellow/Red wire) of SRS
ECU connector C-26 to release shorting bar. See Fig. 21
. Check for continuity
between terminals. If continuity exists, go to next step. If continuity does not
exist, erase, then retrieve DTCs using scan tool. If DTC 24 is retrieved, replace
SRS ECU. Go to step 7 .
6. Check wire harness between SRS ECU and passenger-side air bag module for
damage. If wire harness is okay, go to next step. Replace wire harness, if
damaged. Go to next step.
7. Reconnect all SRS components. Activate air bag system. Using scan tool, erase
then retrieve DTCs. If DTC 24 is retrieved, go to step 1 . If DTC 24 is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC 25: PASSENGER-SIDE AIR BAG MODULE OPEN CIRCUIT 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
. Go
to next step.
2. Disconnect passenger-side air bag module connector C-09. See PASSENGER
-
SIDE AIR BAG MODULE
under REMOVAL & INSTALLATION. See Fig.
19 . Connect Resistor Harness (MB991866) to connector C-09 by backprobing
connector. Connect Load Resistor (MB991865) to resistor harness. Connect
negative battery cable. Using scan tool, erase then retrieve DTCs. If DTC 25 is
retrieved, go to next step. If DTC 25 is not retrieved, replace passenger-side air
bag module. Go to step 4 .
3. Measure resistance of Yellow/Red and Yellow/Green wires between SRS ECU
connector C-26, terminals No. 9 and 10 and passenger-side air bag module
connector
C-09, terminals No. 1 and 2. See Fig. 21
. If resistance is less than 2

2004 Mitsubishi Endeavor Limited
2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems