2004 MITSUBISHI ENDEAVOR light

then retrieve DTCs. If DTC 43 is retrieved, replace SRS ECU. If DTC 43 is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC 43: AIR BAG WARNING LIGHT STAYS ILLUMINATED 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
Inspect Green/Yellow wire between SRS ECU connector C-26, terminal No. 8
and combination meter assembly connector C-102, terminal No. 10 for an open
circuit. See Fig. 21
& Fig. 27
. If an open circuit is not found, go to next step.
If an open circuit is found, repair wire harness. Go to step 3 .
2. Reconnect SRS components. Using scan tool, erase, then retrieve DTCs. If
DTC 43 is retrieved, replace combination meter assembly. If DTC 43 is not
retrieved, system is normal at this time. Intermittent condition may exist.
3. Reconnect all SRS components. Activate air bag system. Using scan tool, erase
then retrieve DTCs. If DTC 43 is retrieved, go to step 1 . If DTC 43 is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC 44: AIR BAG WARNING LIGHT CIRCUIT 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. If AIR BAG
warning light is working normally, use scan tool to retrieve SRS DTCs. If DTC
43 is retrieved, diagnose appropriate malfunction.
2. If DTC 44 is retrieved, no further action is necessary. DTC 44 will be
automatically erased when vehicle condition returns to normal.
DTC 46: IMPROPER SRS ECU INSTALLATION If DTC 46 is present, replace SRS ECU. See SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL & INSTALLATION.
DTC 51 & 52: DRIVER-SIDE AIR BAG MODULE If DTC 51 or 52 is present, replace SRS ECU. See SRS ELECTRONIC CONTROL UNIT (SRS ECU)
under REMOVAL & INSTALLATION.
DTC 54 & 55: PASSENGE
R-SIDE AIR BAG MODULE

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

10. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1486 is retrieved, go to step 1 . If DTC B1486 is not
retrieved, system is normal at this time.
Fig. 40: Identifying Connector C
-38 Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DTC B1487: PASSENGER SEAT BELT WARNING LIGHT DOES NOT TURN OFF 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 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. Using scan tool, request ACTUATOR TEST ITEM No. 02: PASSENGER
SEAT BELT WARNING LIGHT ILLUMINATION. If PASSENGER SEAT

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

BELT warning light comes on and goes off after 7 seconds, go to next step. If
PASSENGER SEAT BELT warning light does not come on and go off after 7
seconds, replace passenger seat belt warning light. Go to step 6 .
5. Inspect Pink wire between connector C-38, terminal No. 3 and SRS ECU
connector C-26, terminal No. 42, for an open circuit. See Fig. 30
. If an open
circuit is not found, reconnect SRS components. Erase, then retrieve DTCs. If
DTC B1487 is retrieved, replace SRS ECU. See SRS ELECTRONIC
CONTROL UNIT (SRS ECU)
under REMOVAL & INSTALLATION. Go
to next step. If an open circuit is found, repair wire as necessary. See WIRE
REPAIR
. Go to next step.
6. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1487 is retrieved, go to step 1 . If DTC B1487 is not
retrieved, system is normal at this time.
DTC B1488: PASSENGER AIR BAG OFF INDICATOR CIRCUIT 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. If DTC B1488 is retrieved, go to DTC B1489:
PASSENGER AIR BAG OFF INDICATOR LIGHT DOES NOT ILLUMINATE
. If DTC B1488 is not retrieved, an intermittent condition may
exist.
DTC B1489: PASSENGER AIR BAG OFF INDICATOR 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 diagnose CAN bus lines, repair CAN bus lines. Go to next
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 B1540, B1541, B1542, B1543, B1545 or B1546 is retrieved, dia
gnose

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

appropriate DTC. See DIAGNOSTIC TROUBLE CODES (DTCS) IDENTIFICATION WITH SINGLE
-STAGE AIR BAG SYSTEM
table. If
DTC B1540, B1541, B1542, B1543, B1545 or B1546 is not retrieved, go to
next step.
4. Visually inspect PASSENGER AIR BAG OFF indicator connector C-37. See
Fig. 30
. If connector C-37 is connected correctly, go to next step. If connector
C-37 is not connected correctly, properly connect connector. Go to step 10 .
5. Disconnect connector C-37. Measure voltage between ground and connector
C-37, terminal No. 1 (Black/White wire). See Fig. 41
. 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-37 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 Blue/Yellow wire between connector C-37, terminal No. 3 and SRS
ECU connector C-26, terminal No. 21, 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. 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. 21. If PASSENGER AIR BAG OFF
warning light does not illuminate, replace PASSENGER AIR BAG OFF
warning light assembly. Go to next step. If PASSENGER AIR BAG OFF
warning light illuminates, erase, then retrieve DTCs. If DTC B1489 is
retrieved, replace SRS ECU. Go to next step.
10. Reconnect all SRS components. Activate air bag system. Using scan tool,
retrieve DTCs. If DTC B1489 is retrieved, go to step 1 . If DTC B1489 is not
retrieved, s
ystem is normal at this time.

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

Fig. 41: Identifying Connector C
-37 Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DTC B1489: PASSENGER AIR BAG OFF INDICATOR LIGHT DOES NOT TURN OFF 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 DTCs are retrieved, go to next
step. If DTCs are not retrieved, an intermittent condition may exist.
3. If DTC 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 B1540, B1541, B1542, B1543, B1545 or B1546 is not retrieved, go to
next step.
4. Using scan tool, request ACTUATOR TEST ITEM No. 03: PASSENGER AIR
BAG OFF WARNING LIGHT ILLUMINATION. If PASSENGER AIR BAG
OFF warning light comes on and goes off after 7 seconds, go to next step. If
PASSENGER AIR BAG OFF warning light does not come on and go off after
7 seconds, replace PASSENGER AIR BAG OFF warning light. Go to step 6 .
5. Check Blue/Yellow wire between connector C-37, terminal No. 3 and SRS
ECU connector C-26, terminal No. 21, for damage, shorts or open circuits. See

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

STEP 3. Check the battery case and cover.
1. Remove the hold-downs and shields.
2. Check for broken/cracked case or cover.
Q: Is the battery case or cover faulty?
YES: Replace the battery. Then go to Step 4.
NO: Go to Step 4.
STEP 4. Check the open circuit voltage.
1. Turn headlights on for 15 seconds.
2. Turn headlights off for two minutes to allow battery positive voltage to
stabilize.
3. Disconnect the battery cables.
4. Read open circuit voltage.
Q: Is open circuit voltage 12.4 volts or more?
YES: Go to Step 5.
NO: Charge the battery at 5 amps for 10.4 hours. Then re-test.
STEP 5. Check the load test.
1. Connect a load tester to the battery.
2. Load the battery at the recommended discharge rate (See LOAD TEST
RATE CHART
) for 15 seconds.
3. Read voltage after 15 seconds, then remove load.
4. Compare the measured value with the minimum voltage (See LOAD
TEST CHART
).
Q: Is the voltage higher than minimum voltage?
YES: The battery is normal.
NO: Replace the battery. Then go to Step 4 .
LOAD TEST RATE CHART
2004 Mitsubishi Endeavor Limited 2004 ELECTRICAL Battery - Endeavor