2004 MITSUBISHI ENDEAVOR ECU

next step.
4. Disconnect negative battery cable. Disconnect SRS ECU connector C-25. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. See Fig. 30
. Release SRS ECU connector shorting bar
using a cable tie. Inspect Black/Red wire between SRS ECU connector C-25,
terminal No. 63 and side impact sensor connector D-33, terminal No. 2 for an
open or short circuit. See Fig. 37 . Inspect White/Red wire between SRS ECU
connector C-25, terminal No. 64 and side impact sensor connector D-33,
terminal No. 1 for an open or short circuit. If an open or short circuit is not
found, reconnect SRS components. Erase, then retrieve DTCs. If DTC B1429
is retrieved, replace SRS ECU. Go to next step. If an open or short circuit is
found in either wire, replace wire harness between SRS ECU and side impact
sensor. Go to next step.
5. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1429 is retrieved, go to step 1 . If DTC B1429 is not
retrieved, system is normal at this time.
DTCB1430: SIDE IMPACT AIR BAG MODULE (LH) SHORT CIRCUIT 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1430 is retrieved, go to
next step. If DTC B1430 is not retrieved, an intermittent condition may exist.
3. Turn ignition on. If DTC B1519 is retrieved by scan tool, go to next step. If
DTC B1519 is not retrieved by scan tool, go to step 5 .
4. Inspect SRS ECU connector C-40. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 30
. If
connector is connected correctly, go to next step. If connector is not connected
correctly, reconnect correctly. Go to step 9 .
5. Disconnect negative battery cable. Disconnect, then reconnect SRS ECU
connector C-40 and driver side impact air bag module connector D-26.
Connect ne
gative batter
y cable. Usin
g scan tool, e
rase, then retrieve DTCs. I
f

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

DTC B1430 is retrieved, go to next step. If DTC B1430 is not retrieved,
intermittent condition may have existed.
6. Disconnect negative battery cable. Disconnect driver side impact air bag
module connector D-26. See SIDE IMPACT AIR BAG MODULE
under
REMOVAL & INSTALLATION. Connect Load Resistor (MB991865) to
Load Resistor Adapter (MB991866). Insert load resistor adapter leads into
harness-side terminals No. 1 (Yellow/Green wire) and No. 2 (Yellow/Red
wire) of connector D-26. See Fig. 36
. Connect negative battery cable. Erase,
then retrieve DTCs. If DTC B1430 is retrieved, go to next step. If DTC B1430
is not retrieved, replace driver side impact air bag module.
7. Disconnect negative battery cable. Remove load resistor and load resistor
adapter from driver side impact air bag module connector D-26. Disconnect
SRS ECU connector C-40. Release SRS ECU connector shorting bar using a
cable tie. Measure resistance between SRS ECU connector C-40, terminals No.
9 (Yellow/Green wire) and No. 10 (Yellow/Red wire). See Fig. 33
. If
continuity exits, go to next step. If continuity does not exist, reconnect SRS
components. Erase, then retrieve DTCs. If DTC B1430 is retrieved, replace
SRS ECU. Go to step 9 .
8. Replace wire harness between SRS ECU and driver side impact air bag
module. Go to next step.
9. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1430 is retrieved, go to step 1 . If DTC B1430 is not
retrieved, system is normal at this time.
DTCB1431: SIDE IMPACT AIR BAG MODULE (LH) OPEN CIRCUIT 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1431 is retrieved, go to
next step. If DTC B1431 is not retrieved, an intermittent condition may exist.
3. Disconnect negative battery cable. Disconnect driver side impact air bag
module connector D-26. See SIDE IMPACT AIR BAG MODULE
unde
r

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

REMOVAL & INSTALLATION. See Fig. 30
. Connect Load Resistor
(MB991865) to Load Resistor Adapter (MB991866). Insert load resistor
adapter leads into harness-side terminals No. 1 (Yellow/Green wire) and No. 2
(Yellow/Red wire) of connector D-26. See Fig. 36
. Connect negative battery
cable. Erase, then retrieve DTCs. If DTC B1431 is retrieved, go to next step. If
DTC B1431 is not retrieved, replace driver side impact air bag module. Go to
step 6 .
4. Disconnect negative battery cable. Remove load resistor and load resistor
adapter from driver side impact air bag module connector D-24. Disconnect
SRS ECU connector C-40. See SRS ELECTRONIC CONTROL UNIT
(SRS ECU)
under REMOVAL & INSTALLATION. Release SRS ECU
connector shorting bar using a cable tie. Measure resistance of Yellow/Green
wire between SRS ECU connector C-40, terminal No. 9 and terminal No. 1 of
connector D-26. See Fig. 33
. Measure resistance of Yellow/Red wire between
SRS ECU connector C-40, terminal No. 10 and terminal No. 2 of connector D-
26. If resistance is 2 ohms or more in either wire, go to next step. If resistance
is less than 2 ohms in both wires, reconnect SRS components. Erase, then
retrieve DTCs. If DTC B1431 is retrieved, replace SRS ECU. Go to step 6 .
5. Replace wire harness between SRS ECU and driver side impact air bag
module. Go to next step.
6. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1431 is retrieved, go to step 1 . If DTC B1431 is not
retrieved, system is normal at this time.
DTC B1432: SIDE IMPACT AIR BAG MODULE (LH) SHORT TO VOLTAGE 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1432 is retrieved, go to
next step. If DTC B1432 is not retrieved, an intermittent condition may exist.
3. Disconnect negative battery cable. Disconnect driver side impact air bag
module connector D-26. See SIDE IMPACT AIR BAG MODULE
unde
r

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

REMOVAL & INSTALLATION. See Fig. 30
. Connect Load Resistor
(MB991865) to Load Resistor Adapter (MB991866). Insert load resistor
adapter leads into harness-side terminals No. 1 (Yellow/Green wire) and No. 2
(Yellow/Red wire) of connector D-26. See Fig. 36
. Connect negative battery
cable. Erase, then retrieve DTCs. If DTC B1432 is retrieved, go to next step. If
DTC B1432 is not retrieved, replace driver side impact air bag module. Go to
step 6 .
4. Disconnect negative battery cable. Remove load resistor and load resistor
adapter from driver side impact air bag module connector D-26. Disconnect
SRS ECU connector C-40. Release SRS ECU connector shorting bar using a
cable tie. Measure voltage between ground and SRS ECU connector C-40,
terminals No. 9 (Yellow/Green wire) and No. 10 (Yellow/Red wire). See Fig.
33 . If voltage is measured at either terminal, go to next step. If voltage is not
measured at both terminals, reconnect SRS components. Erase, then retrieve
DTCs. If DTC B1432 is retrieved, replace SRS ECU. Go to step 6 .
5. Replace wire harness between SRS ECU and driver side impact air bag
module. Go to next step.
6. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1432 is retrieved, go to step 1 . If DTC B1432 is not
retrieved, system is normal at this time.
DTCB1433: SIDE IMPACT AIR BAG MODULE (LH) SHORT TO GROUND 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1433 is retrieved, go to
next step. If DTC B1433 is not retrieved, an intermittent condition may exist.
3. Disconnect negative battery cable. Disconnect passenger side impact air bag
module connector D-26. See SIDE IMPACT AIR BAG MODULE
under
REMOVAL & INSTALLATION. See Fig. 30
. Connect Load Resistor
(MB991865) to Load Resistor Adapter (MB991866). Insert load resistor
ada
pter leads into harnes
s-side terminals No. 1
(Yellow/Green wire
) and No. 2

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

(Yellow/Red wire) of connector D-26. See Fig. 36
. Connect negative battery
cable. Erase, then retrieve DTCs. If DTC B1433 is retrieved, go to next step. If
DTC B1433 is not retrieved, replace driver side impact air bag module. Go to
step 6 .
4. Disconnect negative battery cable. Remove load resistor and load resistor
adapter from passenger side impact air bag module connector D-26.
Disconnect SRS ECU connector C-40. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. Release SRS ECU
connector shorting bar using a cable tie. Measure resistance between ground
and SRS ECU connector C-40, terminal No. 9 (Yellow/Green wire) and
terminal No. 10 (Yellow/Red wire). If zero ohms is measured at either
terminal, go to next step. If infinity is measured at both terminals, reconnect
SRS components. Erase, then retrieve DTCs. If DTC B1433 is retrieved,
replace SRS ECU. Go to step 6 .
5. Replace wire harness between SRS ECU and driver side impact air bag
module. Go to next step.
6. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1433 is retrieved, go to step 1 . If DTC B1433 is not
retrieved, system is normal at this time.
DTCB1434: SIDE IMPACT AIR BAG MODULE (LH) DRIVE CIRCUIT SHORTED 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. If DTC B1434 is retrieved, replace SRS ECU. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. If DTC B1434 is not retrieved, an intermittent condition
may exist.
DTC B1435: SIDE IMPACT AIR BAG MODULE (LH) DRIVE CIRCUIT OPEN 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to

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

diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. If DTC B1435 is retrieved, replace SRS ECU. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. If DTC B1435 is not retrieved, an intermittent condition
may exist.
DTCB1436: SIDE IMPACT SENSOR (LH) FAILURE 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines.
2. Erase, then retrieve DTCs. If DTC B1466 is retrieved, go to next step. If DTC
B1436 is not retrieved, an intermittent condition may exist.
3. Replace driver-side impact sensor. See FRONT IMPACT SENSOR
under
REMOVAL & INSTALLATION. Reconnect SRS components. Erase, then
retrieve DTCs. If DTC B1436 is retrieved, replace SRS ECU. See SRS
ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. If DTC B1436 is not retrieved, system is normal at this
time.
DTCB1437: FRONT IMPACT SENSOR (LH) VOLTAGE ERROR 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1437 is retrieved,
go to
NOTE: When making electrical measurements at SRS ECU
connector, use a cable tie to ensure shorting bar in SRS
ECU connector is released and does not interfere with
electrical measurements.
2004 Mitsubishi Endeavor Limited
2004 ACCESSORIES/SAFETY EQUIPMENT Mitsubishi - Air Bag Restraint Systems

next step. If DTC B1437 is not retrieved, an intermittent condition may exist.
3. Disconnect negative battery cable. Disconnect passenger side impact sensor
connector D-23. See FRONT IMPACT SENSOR
under REMOVAL &
INSTALLATION. See Fig. 30
. Connect negative battery cable. Turn ignition
on. Measure voltage between ground and side impact sensor connector D-23,
terminal No. 2 (Black/Blue wire). See Fig. 37
. If voltage is 9 volts or more,
replace side impact sensor. Go to step 6 . If voltage is less than 9 volts, go to
next step.
4. Disconnect negative battery cable. Disconnect SRS ECU connector C-40. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. Release SRS ECU connector shorting bar using a cable tie.
Inspect White/Blue wire between SRS ECU connector C-40, terminal No. 19
and side impact sensor connector D-23, terminal No. 1 for a short or open
circuit. See Fig. 33
. Inspect Black/Blue wire between SRS ECU connector C-
40, terminal No. 20 and side impact sensor connector D-21, terminal No. 2 for
a short or open circuit. If wires are not okay, go to next step. If wires are okay,
reconnect SRS components. Erase, then retrieve DTCs. If DTC 1437 is
retrieved, replace SRS ECU. Go to step 6 .
5. Replace wire harness between SRS ECU and driver side impact sensor. Go to
next step.
6. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1437 is retrieved, go to step 1 . If DTC B1437 is not
retrieved, system is normal at this time.
DTCB1438: FRONT IMPACT SENSOR (LH) COMMUNICATION ERROR 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. If DTC B1438 is retrieved, go to next step. If DTC
B1438 is not retrieved, an intermittent condition may exist.
3. Disconnect negative battery terminal. Replace driver-side impact sensor with
passen
ger-side im
pact sensor. See SIDE IMPACT SENSOR
under

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

REMOVAL & INSTALLATION. Connect negative battery cable. Erase, then
retrieve DTCs. If DTC B1428 or B1429 is retrieved, replace driver-side impact
sensor. Go to step 5 . If DTC B1428 or B1429 is not retrieved, go to next step.
4. Disconnect negative battery cable. Disconnect SRS ECU connector C-40. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. See Fig. 30
. Release SRS ECU connector shorting bar
using a cable tie. Inspect White/Blue wire between SRS ECU connector C-40,
terminal No. 19 and side impact sensor connector D-23, terminal No. 1 for an
open or short circuit. See Fig. 33 & Fig. 37
. Inspect Black/Blue wire between
SRS ECU connector C-26, terminal No. 20 and side impact sensor connector
D-23, terminal No. 2 for an open or short circuit. If an open or short circuit is
not found, reconnect SRS components. Erase, then retrieve DTCs. If DTC
B1438 or B1439 is retrieved, replace SRS ECU. Go to next step. If an open or
short circuit is found in either wire, replace wire harness between SRS ECU
and side impact sensor. Go to next step.
5. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1438 or B1439 is retrieved, go to step 1 . If DTC
B1438 or B1439 is not retrieved, system is normal at this time.
DTC B1439: FRONT IMPACT SENSOR (LH) COMMUNICATION IMPOSSIBLE 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
diagnose CAN bus lines and CAN bus lines are satisfactory, go to next step. If
scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. If DTC B1438 is retrieved, go to next step. If DTC
B1438 is not retrieved, an intermittent condition may exist.
3. Disconnect negative battery terminal. Replace driver-side impact sensor with
passenger-side impact sensor. See SIDE IMPACT SENSOR
under
REMOVAL & INSTALLATION. Connect negative battery cable. Erase, then
retrieve DTCs. If DTC B1428 or B1429 is retrieved, replace driver-side impact
sensor. Go to step 5 . If DTC B1428 or B1429 is not retrieved, go to next step.
4. Disconnect negative battery cable. Disconnect SRS ECU connector C-40. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &

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