Mitsubishi Outlander GS45X. Manual - part 1413

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-147

CAUTION

Do not insert a probe into the terminal from D-08 interme-
diate connector front side directly, as the connector con-
tact pressure may be weakened.
(5) Check for continuity between the following terminals. It 

should be less than 2 ohms. 

• SRS-ECU connector C-27 (terminal No.39) and the 

intermediate connector D-08 (terminal No.2)

• SRS-ECU connector C-27 (terminal No.40) and the 

intermediate connector D-08 (terminal No.1)

Q: Does continuity exist?

YES : Go to Step 6.
NO :  Repair the wiring harness between the C-27 harness 

side connector terminal No. 39, 40 and the D-08 
intermediate connector (floor harness side) terminal 
No. 2, 1.

AC709326

C-27 Harness side 
connector (front view)

D-08 Intermediate connector 
(Curtain air bag harness side) 
(rear view)

AH

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-148

STEP 5. Resistance measurement at the D-08 intermediate 
connector terminal No. 1, 2 and the D-104 curtain air bag 
module harness side connector terminal No. 1, 2.
(1) Disconnect the negative battery terminal.

DANGER

To prevent the air bag from deploying unintentionally, 
disconnect the curtain air bag module connector 
D-104 to short the squib circuit.

(2) Disconnect curtain air bag module (RH) D-104. Use a 

flat-tipped screwdriver to unlock the locking button at the 
harness side connector by withdrawing it toward you in two 
stages, and then disconnect the connector.

(3) Disconnect the D-08 intermediate connector, unlock the 

connector by sliding the locking button to the direction of the 
arrow as shown in the figure, and then disconnect the 
connector.

(4) Because the short spring is installed to the D-08 

intermediate connector (curtain air bag harness side), insert 
a cable tie [3 mm (0.12 inch) wide, 0.5 mm (0.02 inch) thick] 
between terminals 1, 2 and the short spring to release the 
short spring.

(5) Connect special tool MB991884 to the removed D-104 

harness side connector.

AC701573

Locking 
button

 

Flat-tipped screwdriver

Inflator

Curtain air bag wiring
harness side connector

 

AB

AC706606

AH

Locking button

Intermediate 

connector

AC700119

D-08 Intermediate 
connector (module side ) 

22 mm or more

Cable tie

Short spring

AL

AC701596

MB991884

D-104 
Harness side 
connector

 

AB

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-149

CAUTION

Do not insert a probe into the terminal from D-08 interme-
diate connector front side directly, as the connector con-
tact pressure may be weakened.
(6) Check for continuity between the following terminals.

It should be less than 2 ohms.

• Intermediate connector D-08 (terminal No.1) and resis-

tor harness connector terminal No.2) 

• Intermediate connector D-08 (terminal No.2) and resis-

tor harness connector terminal No.1) 

Q: Is the check result normal?

YES : Replace the curtain air bag module (squib) (Refer to 

P.52B-453

). 

NO :  Repair the wiring harness.

STEP 6. Recheck for diagnostic trouble code. 
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 B1B22 set?

YES : Replace SRS-ECU. (Refer to 

P.52B-436

.)

NO :  Intermittent Malfunction (Refer to GROUP 00, How to 

Use Troubleshooting/Inspection Service Points 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

AC709326

Resistor 
harness
connector

D-08 Intermediate connector
(Curtain air bag harness side)
(rear view)

AI

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-150

DTC B1B23: Curtain Air Bag Module (RH) (Squib) System (Short Circuit between Squib Circuit 
Terminals)

CAUTION

If DTC B1B23 is set in the SRS-ECU, always diag-
nose the CAN main bus line.

.

CIRCUIT OPERATION

• The SRS-ECU judges how severe a collision is 

by detecting signals from the side impact sensors 
installed on the lower side of the center pillar and 
at the quarter panel inner. If the impact is over a 
predetermined level, the SRS-ECU sends an 
ignition signal. At this time, if the side collision 
safing G-sensor is on, the SRS air bag will inflate. 

AC709517

CURTAIN AIR BAG
MODULE
(SQUIB) (RH)

: CONNECTOR LOCK SWITCH
  CONNECTOR COUPLED: ON
  CONNECTOR UNCOUPLED: OFF

NOTE

SRS-ECU

Curtain Air Bag Module (Squib) (RH) Circuit

AB

AC901076

C-27 (Y)

AC

Connector: C-27

AC901080AC

Connectors: D-08, D-104

D-104 (B)

D-08 (Y)