Mitsubishi Galant 9G. Manual — part 57
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-224
STEP 10. Check the wiring harness between horn relay
connector A-06X (terminal 4) and horn (HIGH) connector
A-39 (terminal 1).
Q: Is the wiring harness between horn relay connector
A-06X (terminal 4) and horn (HIGH) connector A-39
(terminal 1) in good condition?
YES : Replace the ETACS-ECU. Verify that the horn sounds
normally.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the horn sounds normally.
STEP 11. Check horn connector A-38 (LOW) for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is horn (LOW) connector A-38 in good condition?
YES : Go to Step 12.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the horn sounds normally.
STEP 12. Check the horn (LOW).
Connect the battery as shown, and verify that the horn sounds.
Q: Is the horn normal?
YES : Go to Step 13.
NO : Replace the horn (LOW). Verify that the horn sounds
normally.
AC305992
RELAY BOX SIDE
CONNECTOR: A-06X
AC
FRONT OF VEHICLE
AC305206
CONNECTOR: A-39
BE
A-39 (B)
HARNESS SIDE
AC400526
AC
A-38 (B)
CONNECTOR: A-38
HARNESS SIDE
ACX02352
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-225
STEP 13. Check horn relay connector A-06X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is horn relay connector A-06X in good condition?
YES : Go to Step 14.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the horn sounds normally.
STEP 14. Check the wiring harness between horn relay
connector A-06X (terminal 4) and horn (LOW) connector
A-38 (terminal 1).
Q: Is the wiring harness between horn relay connector
A-06X (terminal 4) and horn (LOW) connector A-38
(terminal 1) in good condition?
YES : Replace the ETACS-ECU. Verify that the horn sounds
normally.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the horn sounds normally.
AC305992
RELAY BOX SIDE
CONNECTOR: A-06X
AC
FRONT OF VEHICLE
AC305992
RELAY BOX SIDE
CONNECTOR: A-06X
AC
FRONT OF VEHICLE
AC400526
AC
A-38 (B)
CONNECTOR: A-38
HARNESS SIDE
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-226
STEP 15. Check horn relay connector A-06X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is horn relay connector A-06X in good condition?
YES : Go to Step 16.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the horn sounds normally.
STEP 16. Check the horn relay.
Q: Is the horn relay normal?
YES : Go to Step 17.
NO : Replace the horn relay. Verify that the horn sounds
normally.
AC305992
RELAY BOX SIDE
CONNECTOR: A-06X
AC
FRONT OF VEHICLE
BATTERY
VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
1
− 4
Open circuit
• Connect
terminal 2 to the
positive battery
terminal
• Connect
terminal 3 to the
negative battery
terminal
1
− 4
Less than 2 ohms
AC306638
1
4
3
2
2
1
3
4
FRONT OF
VEHICLE
HORN RELAY
AB
CONNECTOR: A-06X
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-227
STEP 17. Check the battery power supply circuit to the
horn relay. Measure the voltage at horn relay connector
A-06X.
(1) Disconnect horn relay connector A-06X and measure the
voltage available at the relay box side of the connector.
(2) Measure the voltage between terminal 1 and ground, and
also between terminal 2 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 19.
NO : Go to Step 18.
STEP 18. Check the wiring harness between horn relay
connector A-06X (terminals 1 and 2) and the battery.
Q: Is the wiring harness between horn relay connector
A-06X (terminals 1 and 2) and the battery in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the horn sounds normally.
STEP 19. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?
YES : Go to Step 20.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the horn sounds normally.
AC305992
RELAY BOX SIDE
CONNECTOR: A-06X
AC
FRONT OF VEHICLE
AC209365EL
CONNECTOR A-06X
(RELAY BOX SIDE)
AC305992
RELAY BOX SIDE
CONNECTOR: A-06X
AC
FRONT OF VEHICLE
AC305413
C-217
CONNECTOR: C-217
AE
HARNESS SIDE
JUNCTION BLOCK
(REAR VIEW)
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