Mitsubishi Outlander XL. Manual - part 940

 

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Mitsubishi Outlander XL. Manual - part 940

 

 

 

If  DTC  U0175  is  set  in  the  SRS-ECU,  always
diagnose the CAN main bus line.

CIRCUIT OPERATION
If an impact of set value or more is detected, the side
impact sensor sends the coded acceleration data to
SRS-ECU. Based on the acceleration data, SRS-ECU
determines the necessity of side air bag and curtain
air  bag  deployment,  and  then  turns  ON  the  power
supply circuit to the inflator.

DTC SET CONDITIONS
These  DTCs  are  set  if  communication  between  the
side impact sensor (front) (RH) and the SRS-ECU is
not possible or faulty.

TROUBLESHOOTING HINTS

Damaged wiring harnesses or connectors

Malfunction of the side impact sensor (front) (RH)

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-291

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 the "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 for any diagnostic trouble code. (Using scan
tool MB991958, read the diagnostic trouble code.)
Check the side impact sensor (front) (RH).

(1)

Disconnect the negative battery terminal.

(2)

Replace  the  side  impact  sensor  (front)  (RH)  with  the  side
impact sensor (front) (LH).

(3)

Connect the negative battery terminal.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

(4)

Erase diagnostic trouble code from memory, and check the
diagnostic trouble code.

Q:Is DTC U0175 set?

YES:

 Replace the side impact sensor (front) (RH) with a

new one. (Refer to P.52B-338). Go to Step 5.

NO:

 Go to Step 4.

STEP 4. Check the harness wires for open circuit or short
circuit between SRS-ECU connector C-27 (terminal No.51

52B-292

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

and 52) and side impact sensor (front) (RH) connector D-129
(terminal No.2 and 1).

Q:Are the harness wires between SRS-ECU connector C-27

(terminal  No.51  and  52  and  side  impact  sensor  (front)

(RH)  connector  D-129  (terminal  No.2  and  1)  in  good

condition?

YES:

 Erase the diagnostic trouble code memory, and check

the diagnostic trouble code. If DTC U0175 sets, replace
the SRS-ECU (Refer to P.52B-326). Then go to Step 5.

NO:

 Replace the harness wires between SRS-ECU connector

C-27 and side impact sensor (front) (RH) connector D-129.
Then go to Step 5.

STEP 5. 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 DTC U0175 set?

YES:

 Return to Step 1.

NO:

 The procedure is complete.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-293

SRS AIR BAG DIAGNOSIS

DTC U0176: Side Impact Sensor (Rear) (RH) Communication Error

M15204000978USA0000010000

CPU

CPU

SIDE IMPACT 
SENSOR  
(FRONT: RH)

SIDE IMPACT 
SENSOR  
(REAR: RH)

SRS-ECU

Side Impact Sensor (Front, Rear) (RH) Circuit

ACCELERO
METER

ACCELERO
METER

ZC600876

Connector: C-27

C-27 (Y)

0025

ZC6008800017

Connector: D-132

D-132 (Y)

ZC6008790020

Connector: D-129

D-129 (Y)

52B-294

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

 

 

 

 

 

 

 

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