Mitsubishi Outlander XL. Manual — part 907
DTC B2209: Occupant Restraint Controller Internal 3
DTC B220A: Occupant Restraint Controller Internal 4
DTC B220B: Occupant Restraint Controller Internal Firing Stored Energy
DTC B220C: Occupant Restraint Controller Accelerometer 1
DTC B220D: Occupant Restraint Controller Accelerometer 2
DTC B2255: Occupant Restraint Controller Roll-over Feature Disabled
If DTCs are set in the SRS-ECU, always diagnose
the CAN main bus line.
TROUBLE JUDGMENT
The above DTC is set if an abnormality is detected in the circuit
inside the SRS-ECU.
TROUBLESHOOTING HINTS
Malfunction of the SRS-ECU
DIAGNOSIS
Required Special Tools:
⦆
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)
Turn the ignition switch to the "ON" position.
(3)
Diagnose the CAN bus line.
(4)
Turn the ignition switch to the "LOCK" (OFF) position.
Q:Is the CAN bus line found to be normal?
YES:
Go to Step 2.
NO:
Repair the CAN bus line. (Refer to GROUP 54D,
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-159
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 the "ON" position.
(3)
Check if the DTC is set.
(4)
Turn the ignition switch to the "LOCK" (OFF) position.
Q:Is the DTCs set?
YES:
Replace the SRS-ECU (Refer to P.52B-326).
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).
DTC B1C27 Side-airbag Module (LH) (Squib) System (Shorted to Squib Circuit Ground)
M15204000956USA0000010000
CONNECTOR
LOCK SWITCH
Side-airbag Module (Squib) (LH) Circuit
CONNECTOR
LOCK SWITCH
SIDE-AIRBAG
MODULE
(SQUIB) (LH)
SRS-ECU
: CONNECTOR COUPLED : ON
CONNECTOR UNCOUPLED : OFF
NOTE
52B-160
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS AIR BAG DIAGNOSIS
ZC600876
Connector: C-27
C-27 (Y)
0025
ZC600879
Connector: D-29
D-29 (Y)
0009
If DTC B1C27 is set in the SRS-ECU, always
diagnose the CAN bus lines.
CIRCUIT OPERATION
⦆
The SRS-ECU judges how severe a collision is by
detecting signals from the side impact sensor
installed on the lower side of the center pillar. If the
impact is over a predetermined level, the SRS-ECU
sends an ignition signal. At this time, if the side-
airbag safing G-sensor is on, the SRS side-airbag
will inflate.
⦆
The ignition signal is input to the side-airbag module
to inflate the side-airbag.
DTC SET CONDITIONS
This DTC is set if there is abnormal resistance
between the input terminals of the side-airbag module
(LH) (squib).
TROUBLESHOOTING HINTS
⦆
Damaged wiring harnesses or connectors
⦆
Short to ground in the left hand side-airbag module
(squib) harness
⦆
Malfunction of the SRS-ECU
DIAGNOSIS
Required Special Tools:
⦆
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)
⦆
MB991865: Dummy resistor
⦆
MB991866: Resister harness
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-161
SRS AIR BAG DIAGNOSIS
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)
Turn the ignition switch to "ON" position.
(3)
Diagnose the CAN bus line.
(4)
Turn the ignition switch to the "LOCK" (OFF) position.
Q:Is the check result satisfactory?
YES:
Go to Step 2.
NO:
Repair the CAN bus line (Refer to GROUP 54D,
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 side-airbag module (LH). (Using scan
tool MB991958, read the diagnostic trouble code.)
(1)
Disconnect the negative battery terminal.
(2)
Disconnect the side-airbag module (LH) connector D-29.
52B-162
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS AIR BAG DIAGNOSIS
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