Mitsubishi Outlander GS45X. Manual — part 1407
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-123
• The ignition signal is input to the curtain air bag
module (LH) to inflate the curtain air bag.
.
DTC SET CONDITIONS
This DTC is set if there is abnormal resistance
between the input terminals of the curtain air bag
module (LH) (squib).
.
TROUBLESHOOTING HITS
• Improper engaged connector or defective short
spring*
• Short circuit between the curtain air bag module
(LH) (squib) circuit terminals
• Damaged connector(s)
• Malfunction of the SRS-ECU
NOTE: *: The squib circuit connectors integrate a
"short" spring (which prevents the air bag from
deploying unintentionally due to static electricity by
shorting the positive wire to the ground wire in the
squib circuit when the connectors are disconnected)
(Refer to
). Therefore, if connector C-27,
D-13 or D-109 is damaged or improperly engaged,
the short spring may not be released when the con-
nector is connected.
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
STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the
."
(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 54C,
).
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-124
STEP 2. Recheck for diagnostic trouble code.
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 Use Troubleshooting/Inspection
Service Points
− How to Cope with Intermittent
Malfunctions
).
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-125
STEP 3. Check SRS-ECU connector C-27, curtain air bag
module (LH) connector D-109 and intermediate connector
D-13. (Using scan tool MB991958, read the diagnostic
trouble code.)
(1) Disconnect the negative battery terminal.
(2) 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. Then connect the connector.
(3) Disconnect the D-109 connectors, and then reconnect it.
Use a flat-tipped (
−) screwdriver to pull out the D-109
curtain air bag module harness side connector locking
button toward the arrow direction, release the lock, and
then disconnect the connector.
(4) Disconnect the D-13 connector’s, and then reconnect them.
Unlock the connector by sliding the locking button to the
direction of the arrow as shown in the figure, and then
disconnect the connector.
(5) Connect the negative battery terminal.
(6) After erasing the diagnostic trouble code memory, check the
diagnostic trouble code again.
(7) Disconnect the negative battery terminal.
Q: Is DTC B1B1B set?
YES : Go to Step 4.
NO : Intermittent Malfunction (Refer to GROUP 00, How to
Use Troubleshooting/Inspection Service Points
− How
to Cope with Intermittent Malfunction
).
AC506734
A
AB
Lock lever
AC701573
Locking
button
Flat-tipped screwdriver
Inflator
Curtain air bag wiring
harness side connector
AB
AC706606
AH
Locking button
Intermediate
connector
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-126
STEP 4. Check by dummy resistor connection. (Using scan
tool MB991958, read the diagnostic trouble code.)
(1) Disconnect the negative battery terminal.
(2) Disconnect the D-13 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.
(3) Connect special tool MB991865 to special tool MB991866.
CAUTION
Do not insert a probe into the terminal from its front side
directly, as the connector contact pressure may be weak-
ened.
(4) Insert the probe of resistor harness, to which the dummy
resistor is installed, from the back of D-13 intermediate
connector (floor harness side).
(5) Connect the negative battery terminal.
(6) After erasing the diagnostic trouble code memory, check the
diagnostic trouble code again.
Q: Is DTC B1B1B set?
YES : Go to Step 5.
NO : Go to Step 6.
AC706606
AH
Locking button
Intermediate
connector
AC701559
D-13 Intermediate connector
(Curtain air bag harness side)
D-13
Intermediate
connector
(Floor harness side)
MB991865
(Dummy resistor: 3
Ω)
MB991866
(Resistor harness)
AB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст