Mitsubishi Outlander XL. Manual — part 903
DTC SET CONDITIONS
DTC is set when the resistance between input
terminals of the seat belt switch in the SRS-ECU is
without the standard value.
TROUBLESHOOTING HINTS
⦆
Malfunction of the seat belt switch
⦆
Damaged wiring harnesses or connectors
⦆
Malfunction of the SRS-ECU
DIAGNOSIS
Required Special Tools:
⦆
MB991222: Probe
⦆
MB991958: Scan Tool (M.U.T.-III Sub Assembly)
⦆
MB991824: Vehicle Communication Interface (V.C.I.)
⦆
MB991827: M.U.T.-III USB Cable
⦆
MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.
ZC501967
AC404789
ZC5019680000
MB991824
MB991827
MB991910
Data link
connector
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.
(1)
Connect scan tool MB991958. Refer to "How to connect the
scan tool P.52B-31."
(2)
Connect scan tool MB991958 to the data link connector.
(3)
Turn the ignition switch to the "ON" position.
(4)
Diagnose the CAN bus line.
(5)
Turn the ignition switch to the "LOCK" (OFF) position.
Q:Is the CAN bus line found to be normal?
YES:
Go to Step 3.
NO:
Repair the CAN bus line (Refer to GROUP 54D,
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-143
SRS AIR BAG DIAGNOSIS
STEP 2. Recheck for diagnostic trouble code.
ZC501967
AC404789
ZC5019680000
MB991824
MB991827
MB991910
Data link
connector
Check again if the DTC is set.
(1)
Erase the DTC.
(2)
Turn the ignition switch to "ON" position.
(3)
Check if the DTC is set.
(4)
Turn the ignition switch to the "LOCK" (OFF) position.
Q:Is the DTC set?
YES:
Go to Step 3.
NO:
There is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to GROUP 00,
How to Cope with Intermittent Malfunction P.00-15).
STEP 3. Check the passenger’s seat belt switch.
ZC6009450001
Tongue
Buckle
D-32 Seat belt
switch connector
ZC500788
D-32 Seat belt
switch connector
0061
Disconnect passenger’s seat belt switch connector D-32. Then
check continuity between the switch terminals.
52B-144
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS AIR BAG DIAGNOSIS
ZC500788
D-32 Seat belt
switch connector
0062
Item
Tester
connection
Specified
condition
Fastened seat belt
1 - Ground
No continuity
2 - Ground
No continuity
1 - 2
Continuity
(Less
than 2 Ω)
Unfastened seat belt
1 - Ground
No continuity
2 - Ground
No continuity
1 - 2
No continuity
Q:Is passenger’s seat belt switch in good condition?
YES:
Go to Step 4.
NO:
Replace inner seat belt. (Refer to GROUP 52A, Front
STEP 4. Check the passenger’s seat belt switch circuit D-32.
Measure the resistance at SRS-ECU connector C-27.
(1)
Disconnect passenger’s seat belt switch connector D-32.
ZC6009450002
Tongue
Buckle
D-32 Seat belt
switch connector
(2)
Install the passenger’s seat belt to the passenger’s seat belt
switch.
(3)
Disconnect SRS-ECU connector C-27 and measure at the
harness side.
ZC600210
A
Lock lever
0000
(4)
While pushing the part "A" indicated in the figure of the
harness side connector, turn the lock lever to the direction of
the arrow to release the lock lever, and disconnect the C-27
SRS-ECU connector.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-145
SRS AIR BAG DIAGNOSIS
ZC5007880063
C-27 Harness side
connector (front view)
(5)
Measure the resistance between terminal 55, 58 and body
ground.
It should be an open circuit.
ZC500788
C-27 Harness side
connector (front view)
0064
(6)
Measure the resistance between terminal 55 and terminal 58.
Resistance should be less than 2 ohms.
ZC6009450003
Tongue
Buckle
D-32 Seat belt
switch connector
(7)
Remove the passenger’s seat belt from the passenger’s seat
belt switch.
(8)
Disconnect SRS-ECU connector C-27 and measure at the
harness side.
ZC600210
A
Lock lever
0000
(9)
While pushing the part "A" indicated in the figure of the
harness side connector, turn the lock lever to the direction of
the arrow to release the lock lever, and disconnect the C-27
SRS-ECU connector.
ZC5007880063
C-27 Harness side
connector (front view)
(10)
Measure the resistance between terminal 55, 58 and body
ground.
It should be an open circuit.
52B-146
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS AIR BAG DIAGNOSIS
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