Mitsubishi Outlander XL. Manual - part 1070

ZC6008720013

Connector: A-45

A-45 (B)

ZC6008710015

Connector: A-49

A-49 (B)

Connector: A-15X

A-15X

ZC6045090000

TECHNICAL DESCRIPTION (COMMENT)
If horns do not sound, the horn input signal circuit or
the  ETACS-ECU  may  be  defective.  Also,  the  theft-
alarm function and horn may have been disabled with
a configuration function.

TROUBLESHOOTING HINTS

｠

Horns may be defective

｠

Horn relay may be defective

｠

The ETACS-ECU may be defective

｠

The wiring harness or connectors may have loose,
corroded,  or  damaged  terminals,  or  terminals
pushed back in the connector

DIAGNOSIS

Required Special Tools:

｠

MB992006: Extra fine probe

｠

MB991223: Harness set

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicles Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

ALARM SYSTEM

54Af-21

DIAGNOSIS

｠

MB991910:  M.U.T.-III  Main  Harness  A  (Vehicles  with
CAN communication system)

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code.
Check if DTC is set to the ETACS-ECU.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect scan
too (M.U.T.-III) P.54Af-4."

(2)

Turn the ignition switch to the "ON" position.

(3)

Check whether the ETACS-ECU related DTC is set.

(4)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is the DTC set?

YES:

 Diagnose the ETACS-ECU. Refer to GROUP 54Ad,

Diagnosis P.54Ad-8.

NO:

 Go to Step 2.

STEP 2. Using scan tool MB991958, Check the configuration
function.

(1)

Turn the ignition switch to the "ON" position.

(2)

Use the ETACS-ECU configuration function to check that the
"Alarm" is set to "Enable".

(3)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is the "Alarm" set to "Enable"?

YES:

 Go to Step 3.

NO:

 Use the ETACS-ECU configuration function to set the

"Alarm" to "Enable" (Refer to P.54Af-27).

STEP 3. Check which horn is defective.
Check which horn does not sound when the theft-alarm system
is triggered.

Q:Which horn does not sound?

Horn (HI) and horn (LO):

 Go to Step 4.

Horn (HI) only:

 Go to Step 10.

Horn (LO) only:

 Go to Step 13.

STEP 4. Check horn relay connector A-15X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is horn relay connector A-15X in good condition?

YES:

 Go to Step 5.

NO:

 Repair the damaged parts.

54Af-22

ALARM SYSTEM

DIAGNOSIS

STEP 5. Check the horn relay.
Refer to P.54Af-29.

Q:Is the horn relay in good condition

YES:

 Go to Step 6.

NO:

 Replace the horn relay.

STEP 6. Measure the voltage at horn relay A-15X.

(1)

Remove the relay, and measure at the relay box side.

ZC5010400057

Relay box side: A-15X

(2)

Measure  the  voltage  between  horn  relay  connector  A-15X
(terminal No. 2, 4) and the body 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 8.

NO:

 Go to Step 7.

STEP 7. Check the Wiring harness between horn relay
connector A-15X (terminal No. 2,4) and fusible link (36).
Check the power supply line for open circuit and short circuit.

Q:Is the check result normal?

YES:

 The trouble can be an intermittent malfunction

(Refer to GROUP 00, How to use Troubleshooting/inspection
Service Points - How to Cope with Intermittent
Malfunction P.00-15).

NO:

 Repair the wiring harness.between theft-alarm horn

relay connector A-15X and fusible link (36).

STEP 8. Check ETACS-ECU connector C-312 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is ETACS-ECU connector C-312 in good condition?

YES:

 Go to Step 9.

NO:

 Repair the damaged parts.

STEP 9. Check the Wiring harness between horn relay
connector A-15X (terminal No. 1) and ETACS-ECU
connector C-312 (terminal No. 11).
Check the output lines for open circuit and short circuit.

Q:Is the check result normal?

YES:

 Go to Step 10.

NO:

 Repair the wiring harness between horn relay

connector A-15X and ETACS-ECU connector C-312.

STEP 10. Check horn (HI) connector A-49 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is horn (HI) connector A-49 in good condition?

YES:

 Go to Step 11.

NO:

 Repair the damaged parts.

ALARM SYSTEM

54Af-23

DIAGNOSIS

STEP 11. Check the Wiring harness between horn (HI)
connector A-49 (terminal No. 1) and horn relay connector
A-15X (terminal No. 3).
Check the output lines for open circuit and short circuit.

Q:Is the check result normal?

YES:

 Go to Step 12.

NO:

 Repair the wiring harness between horn (HI) connector

A-49 and horn relay connector A-15X.

STEP 12. Check the horn (HI) work normally.

ZC6045080000

Connect the battery as shown, and verify that the horn sounds.

Q:Does horn (HI) work normally?

YES:

 Go to Step 13.

NO:

 Replace the horn (HI). go to step 13

STEP 13. Check which horn is defective.
Check which horn does not sound when the theft-alarm system
is triggered.

Q:Which horn does not sound?

Horn (HI) and horn (LO):

 Go to Step 14.

Horn (HI) only:

 Replace the ETACS-ECU.

Horn (LO) only:

 Go to Step 14.

STEP 14. Check horn (LO) connector A-45 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is horn (LO) connector A-45 in good condition?

YES:

 Go to Step 15.

NO:

 Repair the damaged parts.

STEP 15. Check the Wiring harness between horn (LO)
connector A-45 (terminal No. 1) and horn relay connector
A-15X (terminal No. 3).
Check the output lines for open circuit and short circuit.

Q:Is the check result normal?

YES:

 Go to Step 16.

NO:

 Repair the wiring harness between horn (LO) connector

A-45 and horn relay connector A-15X.

54Af-24

ALARM SYSTEM

DIAGNOSIS