Mitsubishi Galant (2004+). Manual — part 443
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-383
STEP 16. Check the CAN_L and H lines (communication
lines including the SRS-ECU) between joint connector (3)
and the SRS-ECU for a short circuit. Measure the
resistance at joint connector (3) C-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect joint connector (3) C-02, and measure the
resistance at the wiring harness side of joint connector (3)
C-02.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between joint connector (3)
terminals 3 and 14.
OK: 1 k
Ω or more
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, go to Step
23 .
NO : If the resistance measures less than 1 k
Ω, go to Step
17.
STEP 17. Check intermediate connector C-22 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
CAUTION
The strand end of the twisted wire should be within 10 cm
(4 inches) from the connector. For details refer to
Q: Is intermediate connector C-22 in good condition?
YES : Go to Step 18.
NO : Repair the damaged parts.
AC305231AP
CONNECTOR: C-02
AC209438
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
TEST
HARNESS
AV
TEST
HARNESS
HARNESS SIDE: C-02
AC305233 AI
CONNECTOR: C-22
C-22 (Y)
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-384
STEP 18. Check the lines between the CAN_L and H lines
(communication line including ECUs) of the floor wiring
harness for a short circuit. Measure the resistance at
intermediate connector C-22.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-22, and measure the
resistance at the male side (at floor wiring harness side).
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between intermediate connector
terminals 22 and 23.
OK: 120
± 20 Ω
Q: Does the resistance measure 120
± 20 Ω?
YES : If the resistance measures 120
± 20 Ω, go to Step 22.
NO : If the resistance does not measure 120
± 20 Ω, go to
Step 19.
AC305233 AI
CONNECTOR: C-22
C-22 (Y)
AC204582
AC204582CS
MALE SIDE: C-22
TEST
HARNESS
TEST HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-385
STEP 19. Check the CAN_L and H lines (communication
lines only) between the SRS-ECU connector and the
intermediate connector for a short circuit. Measure the
resistance at intermediate connector C-22.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-22 and SRS-ECU
connector C-121, and measure the resistance at the male
side of intermediate connector C-22 (at floor wiring harness
side).
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
AC305234AC
CONNECTORS: C-22, C-121
C-121 HARNESS SIDE
C-121 (Y)
C-22 (Y)
C-22
48
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DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-386
(4) Measure the resistance between intermediate connector
terminals 22 and 23.
OK: 1 k
Ω or more
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, go to Step
20 .
NO : If the resistance measures less than 1 k
Ω, repair the
wiring harness between intermediate connector C-22
and SRS-ECU connector.
STEP 20. Check SRS-ECU connector C-121 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
CAUTION
The strand end of the twisted wire should be within 10 cm
(4 inches) from the connector. For details refer to
Q: Is SRS-ECU connector C-121 in good condition?
YES : Go to Step 21.
NO : Repair the damaged parts.
AC204582
AC204582CS
MALE SIDE: C-22
TEST
HARNESS
TEST HARNESS
AC305233 AJ
CONNECTOR: C-121
HARNESS SIDE
C-121 (Y)
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