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,

Diagnosis P.54D-17).

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,

Diagnosis P.54D-17).

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