Mitsubishi Galant 9G. Manual — part 1474
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-306
STEP 4. Check the driver’s seat belt switch circuit D-28.
Measure the resistance at SRS-ECU connector C-122.
(1) Disconnect driver’s seat belt switch connector D-28.
(2) Install the driver’s seat belt to the driver’s seat belt switch.
(3) Disconnect SRS-ECU connector C-122 and measure at the
harness side (rear side).
(4) Measure the resistance between terminal 3 and terminal 4.
Resistance should be 820
± 82 Ω
AC305264
AS
CONNECTOR: D-28
D-28 (B)
HARNESS SIDE
AC308221AD
D-28 DRIVER'S
SEAT BELT SWITCH
CONNECTOR
BUCKLE
TONGUE
AC305362
CONNECTOR: C-122
C-122 (Y)
AI
SRS-ECU
C-122
Harness side
connector
(rear view)
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
AC308212
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
C-122 HARNESS SIDE
CONNECTOR
(REAR VIEW)
AB
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-307
(5) Measure the resistance between terminal 3, 4 and body
ground.
It should be open circuit.
(6) Measure the resistance between terminal 18 and terminal
4.
Resistance should be less than 2 ohms.
(7) Remove the driver’s seat belt from the driver’s seat belt
switch.
(8) Disconnect SRS-ECU connector C-122 and measure at the
harness side (rear side).
(9) Measure the resistance between terminal 18 and 4.
Resistance should be 820
± 82 Ω
AC310506
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
C-122 HARNESS SIDE
CONNECTOR
(REAR VIEW)
EO
AC308213
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
C-122 HARNESS SIDE
CONNECTOR
(REAR VIEW)
AB
AC308221AC
D-28 DRIVER'S
SEAT BELT SWITCH
CONNECTOR
BUCKLE
TONGUE
AC305362
CONNECTOR: C-122
C-122 (Y)
AI
SRS-ECU
C-122
Harness side
connector
(rear view)
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
AC308213
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
C-122 HARNESS SIDE
CONNECTOR
(REAR VIEW)
AB
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-308
(10)Measure the resistance between terminal 18, 4 and body
ground.
It should be open circuit.
(11)Measure the resistance between terminal 3 and terminal 4.
Resistance should be less than 2 ohms.
Q: Does the resistance meet the value above?
YES : Erase the diagnostic trouble code memory, and check
the diagnostic trouble code. If DTC B1520, B1521,
B1522, B1523, B1524, B1525, B1526, B1527, B1528
or B1529 are set, replace the SRS-ECU. (Refer to
NO : Go to Step 5.
STEP 5. Check the harness wires between SRS-ECU
connector C-122 (terminal No.3, 18 and 4) and driver’s seat
belt switch connector D-28 (terminal No.3, 4 and 5).
Q: Are harness wires between SRS-ECU connector C-122
(terminal No.3, 18 and 4) and driver’s seat belt switch
connector D-28 (terminal No.3, 4 and 5) in good
condition?
YES : Go to Step 6.
NO : Replace the harness wires between SRS-ECU
connector C-122 and driver’s seat belt switch
connector D-28. Then go to Step 6.
AC310506
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
C-122 HARNESS SIDE
CONNECTOR
(REAR VIEW)
EP
AC308212
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
C-122 HARNESS SIDE
CONNECTOR
(REAR VIEW)
AB
AC305362
CONNECTOR: C-122
C-122 (Y)
AI
SRS-ECU
C-122
Harness side
connector
(rear view)
A
B
18
10
15
7
13
5
14
6
16
8
17
9
19
11
20
12
1 2
3 4
AC305264
AS
CONNECTOR: D-28
D-28 (B)
HARNESS SIDE
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-309
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 B1520, B1521, B1522, B1523, B1524, B1525,
B1526, B1527, B1528 or B1529 set?
YES : Return to Step 1.
NO : The procedure is complete.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст