2004 MITSUBISHI ENDEAVOR ignition

ground. If zero ohms is measured, inspect all circuits running from fuse No. 22
for a short to ground, including connector C-211. See Fig. 22
. Repair short to
ground. See WIRE REPAIR
. Go to next step. If resistance is infinite,
reconnect SRS components. Erase, then retrieve DTCs. If DTC B1476 is
retrieved, replace SRS ECU. Go to next step.
8. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1473 is retrieved, go to step 1 . If DTC B1473 is not
retrieved, system is normal at this time.
Fig. 39: Identifying Instrument Panel Junction Box & Fuse Locations

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DTC B1477: POWER SUPPLY VOLTAGE DROPS ABNORMALLY 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 B1477 is retrieved,
go to

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

next step. If DTC B1477 is not retrieved, an intermittent condition may exist.
3. Remove fuse No. 23 from instrument panel junction block. See Fig. 39
. If fuse
is blown, go to step 6 . If fuse is not blown, go to next step.
4. Disconnect negative battery cable. Disconnect SRS ECU connector C-26. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. See Fig. 30
. Connect negative battery cable. Turn ignition
on. Measure voltage between ground and SRS ECU connector C-26, terminal
No. 24 (Black/Yellow wire). If voltage is 9 volts or more, reconnect SRS
components. Erase, then retrieve DTCs. If DTC B1477 is retrieved, replace
SRS ECU. Go to step 8 . If DTC B1477 is not retrieved, go to next step.
5. Inspect Black/Yellow wire between SRS ECU connector C-26, terminal No. 24
and ignition switch connector C-308, terminal No. 2. See WIRING
DIAGRAMS
. If wire is okay, go to step 8 . If wire is not okay, replace
harness between SRS ECU and ignition switch. Go to step 8 .
6. Replace fuse. Turn ignition on for one minute, then turn off. Inspect fuse. If
fuse is okay, go to step 8 . If fuse is not okay, go to next step.
7. Measure resistance between SRS ECU connector terminal No. 24 and ground.
If zero ohms is measured, inspect all circuits running from fuse No. 23 for a
short to ground. including connector C-211. See Fig. 22
. Repair short to
ground. See WIRE REPAIR
. Go to next step. If continuity does not exist,
reconnect SRS components. Erase, then retrieve DTCs. If DTC B1477 is
retrieved, replace SRS ECU. Go to next step.
8. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1473 is retrieved, go to step 1 . If DTC B1473 is not
retrieved, system is normal at this time.
DTC B1478: SRS ECU CAPACITOR CIRCUIT VOLTAGE HIGH 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 B1478 is retrieved, replace SRS ECU. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &

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

INSTALLATION. If DTC B1478 is not retrieved, an intermittent condition
may exist.
DTC B1479: SRS ECU CAPACITOR CIRCUIT VOLTAGE LOW 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 B1479 is retrieved, replace SRS ECU. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. If DTC B1479 is not retrieved, an intermittent condition
may exist.
DTC B1480: DRIVER-SIDE AIR BAG MODULE SECOND-STAGE 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 B1400 is retrieved, go to
next step. If DTC B1400 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-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 30
. If
connector is engaged correctly, go to next step. If connector is not engaged
correctly, engage correctly. Go to step 10 .
5. Disconnect negative battery cable. Disconnect, then reconnect SRS connectors
C-26, C-307 and C-305. Connect negative battery cable. Using scan tool, erase,
then retrieve DTCs. If DTC B1480 is retrieved, go to next step. If DTC B1480
is not retrieved, intermittent condition may have existed.
6. Disconnect negative battery cable. Remove driver-side air bag module. See
DRIVE
R-SIDE AIR BAG MODULE & CLOCKSPRIN
Gunde
r

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

REMOVAL & INSTALLATION. Disconnect driver-side air bag module
connector C-305. Connect Load Resistor (MB991865) to upper clockspring
connector using Load Resistor Adapter (MB991866). Insert load resistor
adapter leads into terminals No. 3 (Yellow/Green wire) and No. 4
(Yellow/Black wire) of connector C-305. Connect negative battery cable.
Erase, then retrieve DTCs. If DTC B1480 is retrieved, go to next step. If DTC
B1480 is not retrieved, replace driver-side air bag module.
7. Disconnect negative battery cable. Disconnect lower clockspring connector C-
307. Connect load resistor and load resistor adapter to terminals No. 11
(Yellow/Blue wire) and No. 12 (Yellow/Violet wire) on harness-side of
connector C-307. See Fig. 32
. Reconnect negative battery cable. Erase, then
retrieve DTCs. If DTC B1480 is retrieved, replace clockspring. Go to step 10 .
If DTC B1480 is not retrieved, go to next step.
8. Disconnect negative battery cable. Disconnect clockspring connector C-301.
Disconnect SRS ECU connector. Release SRS ECU shorting bar using a cable
tie. Measure resistance between SRS ECU connector terminals No. 33
(Yellow/Blue wire) and No. 34 (Yellow/Violet 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 B1480 is retrieved, replace
SRS ECU. Go to step 10 .
9. Replace wire harness between SRS ECU and clockspring. Go to next step.
10. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1480 is retrieved, go to step 1 . If DTC B1480 is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC B1481: DRIVER-SIDE AIR BAG MODULE SECOND-STAGE 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 B1481 is retrieved, go to
next step. If DTC B1481 is not retrieved, an intermittent condition may exist.
3. Remove drive
r-side air ba
g module. See DRIVER
-SIDE AIR BAG

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

2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1482 is retrieved, go to
next step. If DTC B1482 is not retrieved, an intermittent condition may exist.
3. Remove driver-side air bag module. See DRIVER
-SIDE AIR BAG
MODULE & CLOCKSPRING
under REMOVAL & INSTALLATION.
Disconnect driver-side air bag module connector C-305. See Fig. 30
. Connect
Load Resistor (MB991865) to upper clockspring connector using Load
Resistor Adapter (MB991866). Insert load resistor adapter leads into terminals
No. 3 (Yellow/Green wire) and No. 4 (Yellow/Black wire) of connector C-305.
See Fig. 31
. Connect negative battery cable. Erase, then retrieve DTCs. If
DTC B1482 is retrieved, go to next step. If DTC B1482 is not retrieved,
replace driver-side air bag module. Go to step 7 .
4. Disconnect negative battery cable. Disconnect lower clockspring connector C-
307. Connect load resistor and load resistor adapter to terminals No. 11
(Yellow/Blue wire) and No. 12 (Yellow/Violet wire) on harness-side of
connector C-307. See Fig. 32
. Reconnect negative battery cable. Erase, then
retrieve DTCs. If DTC B1482 is retrieved, replace clockspring. Go to step 7 . I
f
DTC B1482 is not retrieved, go to next step.
5. Disconnect negative battery cable. Disconnect clockspring connector C-307.
Disconnect SRS ECU connector. Release SRS ECU connector shorting bar
using a cable tie. Measure voltage between ground and SRS ECU terminal No.
33 (Yellow/Blue wire) and No. 34 (Yellow/Violet wire). If voltage is measured
at either terminal, go to next step. If zero volt is measured at both terminals,
reconnect components. Erase, then retrieve DTCs. If DTC B1482 is retrieved,
replace SRS ECU. Go to step 7 .
6. Replace wire harness between SRS ECU and clockspring. Go to next step.
7. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1482 is retrieved, go to step 1 . If DTC B1482 is not
retrieved, system is normal at this time.
DTCB1483: DRIVER-SIDE AIR BAG MODULE SECOND-STAGE 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 dia
gnose CAN bus lines, re
pair CAN bus lines. Go to next

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

step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTC B1483 is retrieved, go to
next step. If DTC B1483 is not retrieved, an intermittent condition may exist.
3. Remove driver-side air bag module. See DRIVER
-SIDE AIR BAG
MODULE & CLOCKSPRING
under REMOVAL & INSTALLATION.
Disconnect driver-side air bag module connector C-305. See Fig. 30
. Connect
Load Resistor (MB991865) to upper clockspring connector using Load
Resistor Adapter (MB991866). Insert load resistor adapter leads into terminals
No. 3 (Yellow/Green wire) and No. 4 (Yellow/Black wire) of connector C-305.
See Fig. 31
. Connect negative battery cable. Erase, then retrieve DTCs. If
DTC B1483 is retrieved, go to next step. If DTC B1483 is not retrieved,
replace driver-side air bag module. Go to step 7 .
4. Disconnect negative battery cable. Disconnect lower clockspring connector C-
307. Connect load resistor and load resistor adapter to terminals No. 11
(Yellow/Blue wire) and No. 12 (Yellow/Violet wire) on harness-side of
connector C-307. See Fig. 32
. Reconnect negative battery cable. Erase, then
retrieve DTCs. If DTC B1483 is retrieved, replace clockspring. Go to step 7 . I
f
DTC B1483 is not retrieved, go to next step.
5. Disconnect negative battery cable. Disconnect clockspring connector C-307.
Disconnect SRS ECU connector. Release SRS ECU connector shorting bar
using a cable tie. Measure resistance between ground and SRS ECU terminal
No. 33 (Yellow/Blue wire) and No. 34 (Yellow/Violet wire). See Fig. 33
. If
resistance is not infinite at both terminals, go to next step. If resistance is
infinite at both terminals, reconnect components. Erase, then retrieve DTCs. If
DTC B1483 is retrieved, replace SRS ECU. Go to step 7 .
6. Replace wire harness between SRS ECU and clockspring. Go to next step.
7. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1483 is retrieved, go to step 1 . If DTC B1401 is not
retrieved, system is normal at this time.
DTC B1484: DRIVER-SIDE AIR BAG MODULE ACTIVATION CIRCUIT SHORT 1. Connect scan tool to Data Link Connector (DLC). See INITIAL SRS
DIAGNOSTIC PROCEDURE
under DIAGNOSTICS. If scan tool is able to
dia
gnose CAN bus lines and CAN bus lines are satis
factor
y, go to next ste
p. If

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

scan tool cannot diagnose CAN bus lines, repair CAN bus lines. Go to next
step.
2. Erase, then retrieve DTCs. If DTC B1484 is retrieved, replace SRS ECU. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. If DTC B1484 is not retrieved, an intermittent condition
may exist.
DTC B1485: DRIVER-SIDE AIR BAG MODULE ACTIVATION CIRCUIT OPEN 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 B1485 is retrieved, replace SRS ECU. See
SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL &
INSTALLATION. If DTC B1485 is not retrieved, an intermittent condition
may exist.
DTC B1486: PASSENGER SEAT BELT WARNING LIGHT MALFUNCTION 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 B1486 is retrieved, go to
DTC B1487: PASSENGER SEAT BELT WARNING LIGHT DOES NOT
ILLUMINATE
. If DTC B1486 is not retrieved, an intermittent condition may
exist.
DTC B1487: PASSENGER SEAT BELT WARNING LIGHT DOES NOT ILLUMINATE 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 dia
gnose CAN bus lines, re
pair CAN bus lines. Go to next

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

step.
2. Erase, then retrieve DTCs. Turn ignition off. If DTCs are retrieved, go to next
step. If DTCs are not retrieved, an intermittent condition may exist.
3. If DTC B1530, B1531, B1532, B1533, B1534, B1535, B1536, B1537, B1538,
B1539, B1540, B1541, B1542, B1543, B1545 or B1546 is retrieved, diagnose
appropriate DTC. See DIAGNOSTIC TROUBLE CODES (DTCS) IDENTIFICATION WITH SINGLE
-STAGE AIR BAG SYSTEM
table. If
DTC B1530, B1531, B1532, B1533, B1534, B1535, B1536, B1537, B1538,
B1539, B1540, B1541, B1542, B1543, B1545 or B1546 is not retrieved, go to
next step.
4. Visually inspect passenger seat belt warning light connector C-38. See Fig. 30
.
If connector C-38 is connected correctly, go to next step. If connector C-38 is
not connected correctly, properly connect connector. Go to step 10 .
5. Disconnect connector C-38. Measure voltage between ground and connector
C-38, terminal No. 1 (Black/White wire). See Fig. 40
. If voltage is not about
12 volts, go to next step. If voltage is about 12 volts, go to step 7 .
6. Inspect Black/White wire between terminal No. 1 of connector C-38 and
terminal No. 2 of ignition switch connector C-308, including junction block
connectors C-211 and C-215. See Fig. 22
. If wire is okay, go to next step. If
wire is not okay, repair as necessary. See WIRE REPAIR
. Go to step 10 .
7. Inspect SRS ECU connector C-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. If SRS ECU
connector C-26 is connected correctly, go to next step. If SRS ECU connector
C-26 is not connected correctly, properly connect connector. Go to step 10 .
8. Check Pink wire between connector C-07, terminal No. 3 and SRS ECU
connector C-26, terminal No. 42, for damage, shorts or open circuits. See Fig.
33 . If wire is okay, go to next step. If wire is not okay, repair as necessary. See
WIRE REPAIR
. Go to step 10 .
9. Disconnect negative battery cable. Disconnect SRS ECU connector C-26.
Connect negative battery cable. Connect a jumper wire between ground and
SRS ECU connector C-26, terminal No. 42. If passenger seat belt warning light
does not illuminate, replace passenger seat belt warning light assembly. Go to
next step. If passenger seat belt warning light illuminates, erase, then retrieve
DTCs. If DTC B1487 is retrieved, re
place SRS ECU. Go to next ste
p.

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