Mitsubishi Outlander XL. Manual - part 990

ZC5010400052

Relay box side: A-20X

(2)

Measure the voltage between terminal 2 or 4 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 5.

NO:

 Go to Step 7.

STEP 5. 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 6.

NO:

 Repair the damaged parts.

STEP 6. Check the wiring harness between headlight relay
(HIGH) connector A-20X (terminal 1) and ETACS-ECU
connector C-312 (terminal 13).

｠

Check the ground wires for open circuit.

Q:Is  the  wiring  harness  between  headlight  relay  (HIGH)

connector A-20X (terminal 1) and ETACS-ECU connector

C-312 (terminal 13) in good condition?

YES:

 Go to Step 8.

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 high-beam
headlights illuminate normally.

STEP 7. Check the wiring harness between headlight relay
(HIGH) connector A-20X (terminal 4) and the fusible link (36).

｠

Check the power supply line for open circuit.

Q:Is  the  wiring  harness  between  headlight  relay  (HIGH)

connector A-20X (terminal 4) and fusible link (36) in good

condition?

YES:

 Go to Step 8.

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 high-beam
headlights illuminate normally.

STEP 8. Check the column switch (switch body).
Refer to GROUP 54Ah - Inspection P.54Ah-9.

Q:Is the column switch (switch body) in good condition?

YES:

 Go to Step 9.

NO:

 Replace the column switch. Verify that the high-beam

headlights illuminate normally.

LIGHTING

54Ac-33

DIAGNOSIS

STEP 9. Retest the system

Q:Does  the  headlights  (high-beam)  do  not  illuminate  in

good condition?

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:

 Replace the ETACS-ECU.

Inspection Procedure 3: The headlights do not illuminate when the lighting switch is
at the "PASSING" position, but the low-beam illuminates (high-beam and low-beam
cannot be changed) with the switch at the "HEAD" position.

M15410900106USA0000010000

Whenever  the  ECU  is  replaced,  ensure  that  the  power
supply circuit, the ground circuit and the communication
circuit are normal.

TECHNICAL DESCRIPTION (COMMENT)
If the headlights illuminate only at low-beam regardless of the
lighting switch position, the headlight fail-safe function may be
active.

TROUBLESHOOTING HINTS

｠

Malfunction of column switch

｠

Malfunction of the ETACS-ECU

｠

Damaged harness wires and connectors

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)

54Ac-34

LIGHTING

DIAGNOSIS

STEP 1. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code.

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.54Ac-11."

(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. Retest the system

Q:Do the headlights illuminate normally?

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:

 Replace the ETACS-ECU.

Inspection Procedure 4: Headlights do not illuminate when the passing switch is
operate.

M15410900098USA0000010000

Whenever  the  ECU  is  replaced,  ensure  that  the  power
supply circuit, the ground circuit and the communication
circuit are normal.

TECHNICAL DESCRIPTION (COMMENT)
If both headlights (low-beam and high-beam) do not illuminate,
the  passing  switch  input  circuit  or  ETACS-ECU  may  have  a
problem.

TROUBLESHOOTING HINTS

｠

Malfunction of column switch

｠

Malfunction of the ETACS-ECU

｠

Damaged harness wires and connectors

LIGHTING

54Ac-35

DIAGNOSIS

DIAGNOSIS

Required Special Tools:

｠

MB991223: Harness set

｠

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)

STEP 1. Check that the headlights operate.
Check that the low-beam and high-beam headlights illuminate
normally.

Q:Is the check result normal?

YES:

 Go to Step 2.

NO:

 Refer to Inspection Procedure 1 "Headlights (low-

beam) do not illuminate." P.54Ac-26and Inspection
Procedure 2 "Headlights (high-beam) do not
illuminate." P.54Ac-30.

STEP 2. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code.

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.54Ac-11."

(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 3.

STEP 3. Retest the system

Q:Do the headlights (low-beam and high-beam) illuminate

normally when turning ON the passing switch?

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:

 Replace the ETACS-ECU.

54Ac-36

LIGHTING

DIAGNOSIS