warning light MITSUBISHI ENDEAVOR 2004 Service User Guide

SCAN TOOL COMMUNICATION SYMPTOMS (SINGLE-STAGE AI
R
BAG SYSTEMS)
SCAN TOOL COMMUNICATION SYMPTOMS (DUAL-STAGE AIR BAG
SYSTEMS)
DIAGNOSTIC TROUBLE CODES (DTCS) IDENTIFICATION WITH
SINGLE-STAGE AIR BAG SYSTEM
Symptom
Ins
pection
Procedure
No communication with all systems
INSPECTION PROCEDURE
1
No communication with SRS only
INSPECTION PROCEDURE
2
Ignition switch on (engine stopped)AIR BAG warning light does not come on
(1)
AIR BAG warning light stays on after 7 seconds
(2)
(1)
See DTC 43: AIR BAG WARNING LIGHT DOES NOT ILLUMINATE
under .
(2)
See DTC 43: AIR BAG WARNING LIGHT STAYS ILLUMINATED

under .
Symptom
Inspection Procedure
No communication with all systems
INSPECTION PROCEDURE 1
No communication with SRS only
INSPECTION PROCEDURE 2
AIR BAG warning light does not come on
INSPECTION PROCEDURE 3
AIR BAG warning light stays on
INSPECTION PROCEDURE 4
DTC
Possible Cause

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

1A

Driver-side front impact sensor short circuit
1B

Driver-side front impact sensor open circuit
1C

Driver-side front impact sensor short to voltage
1D

Driver-side front impact sensor short to ground
2A

Passenger-side front impact sensor short circuit
2B

Passenger-side front impact sensor open circuit
2C

Passenger-side front impact sensor short to voltage
2D

Passenger-side front impact sensor short to ground
11
Front impact sensor short circuit
12
Front impact sensor either circuit open/no power
13
Front impact sensor both circuits open/no power
14
Analog "G" sensor system
15
Safing "G" sensor short circuit
16
Safing "G" sensor open circuit
17
Safing "G" side impact sensor
21
Driver-side air bag module short circuit
22
Driver-side air bag module open circuit
24
Passenger-side air bag module short circuit
25
Passenger-side air bag module open circuit
26
Driver-side seat belt pretensioner short circuit
27
Driver-side seat belt pretensioner open circuit
28
Passenger-side seat belt pretensioner short circuit
29
Passenger-side seat belt pretensioner open circuit
31 & 32
SRS ECU capacitor circuit
34
SRS ECU connector lock circuit
35
SRS ECU air bag system deployment
41
SRS ECU power circuit (Fuse No. 2)
42
SRS ECU power circuit (Fuse No. 3)
43
AIR BAG warning light does not illuminate
43
AIR BAG warning light stays illuminated
44
AIR BAG warning light

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

B1481

Driver-side air bag module second-stage open circuit
B1482

Driver-side air bag module second-stage short to voltage
B1483

Driver-side air bag module second-stage short to ground
B1484

Driver-side air bag module activation circuit short
B1485

Driver-side air bag module activation circuit open
B1486

Passenger seat belt warning light malfunction
B1487

Passenger seat belt warning light does not illuminate
B1487

Passenger seat belt warning light does not turn of
f
B1488

Passenger AIR BAG OFF indicator circuit malfunction
B1489

Passenger AIR BAG OFF indicator light does not illuminate
B1489

Passenger AIR BAG OFF indicator light does not turn of
f
B1490

Passenger-side air bag module second-stage short circuit
B1491

Passenger-side air bag module second-stage open circuit
B1492

Passenger-side air bag module second-stage short to voltage
B1493

Passenger-side air bag module second-stage short to ground
B1494

Passenger-side air bag module second-stage activation circuit
short circuit
B1495

Passenger-side air bag module second-stage activation circuit
open circuit
B1496

SRS ECU non-volatile memory (EEPROM)
B1497

SRS ECU ASIC (frontal activation)
B1498

SRS ECU ROM or RAM
B1499

Collision decision
B1506

Seat slide sensor open
B1507

Seat slide sensor circuit short to ground
B1508

Seat slide sensor circuit short to voltage
B1509

Incorrect SRS ECU
B1519

SRS ECU connector lock malfunction
B1520

Seat belt switch (RH) malfunction
B1521

Seat belt switch (RH) circuit open for N/C terminal
B1522

Seat belt switch (RH) ground-side circuit shorted for N/C
terminal

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

Fig. 22
. If wire harness and connectors are damaged, replace wire harness. Go
to step 8 . If wire harness and connectors are okay, go to step 8 .
4. Replace fuse. Turn ignition on for at least one minute, then off. Inspect fuse. If
fuse is okay, go to step 8 . If fuse is not okay, go to next step.
5. Disconnect connector C-211 from junction block. Check for continuity
between ground and terminal No. 7 (Yellow/Black wire) of connector C-211. I
f
continuity exists, check all circuits associated with fuse No. 3 for a short to
ground. If continuity does not exist, go to next step.
6. Disconnect SRS ECU connector C-26. Check for continuity between SRS ECU
connector C-26, terminal No. 13 (Black/White wire) and ground. If continuity
exists, go to next step. If continuity does not exist, erase, then retrieve DTCs
using scan tool. If DTC 42 is retrieved, replace SRS ECU. Go to step 8 .
7. Check Black/White wire between SRS ECU connector C-26, terminal No. 13
and junction block connector C-205, terminal No. 7 for an open, short or
damage. If wire is okay, go to next step. If wire is not okay, replace wire
harness and go to next step.
8. Reconnect all SRS components. Activate air bag system. Using scan tool, erase
then retrieve DTCs. If DTC 42 is retrieved, go to step 1 . If DTC 42 is not
retrieved, system is normal at this time. Intermittent condition may exist.
DTC 43: AIR BAG WARNING LIGHT DOES NOT ILLUMINATE 1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS
. Disable air
bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
Disconnect SRS ECU connector C-26. See SRS ELECTRONIC CONTROL
UNIT (SRS ECU)
under REMOVAL & INSTALLATION. See Fig. 19
.
Connect negative battery cable. Turn ignition on. If AIR BAG warning light
does not illuminate, go to next step. If AIR BAG warning light illuminates, go
to step 3 .
2. Inspect wire harness between ignition switch connector C-308 and SRS ECU
connector C-26 and between C-26 and combination meter connector C-102 for
damage, a short or open circuit. If wire harness is okay, replace combination
meter assembly. Go to next step. If wire harness is not okay, replace wire
harness. Go to next step.
3. Reconnect all SRS com
ponents. Activate air ba
g system. Usin
g scan tool, erase

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

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