Mitsubishi Montero (2004+). Manual — part 763
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-309
• The front-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
• MB991813: SWS Monitor Kit
• MB991806: SWS Monitor Cartridge
• MB991812: SWS Monitor Harness (For Column-ECU)
• MB991822: Probe Harness
STEP 1. Use scan tool MB991958 to select "ECU COMM
CHK" on the SWS monitor display.
Check the following ECUs:
• Column-ECU
• Front-ECU
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect the special tool. Refer to "How to connect SWS
monitor
.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Operate scan tool MB991958 according to the procedure
below to display "ECU COMM CHK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "ECU COMM CHK."
(4) Scan tool MB991958 should show "OK" on the "ECU
COMM CHK" menus for both the "COLUMN ECU" and the
"FRONT ECU" menus.
Q: Is "OK" displayed on both the "COLUMN ECU" and
"FRONT ECU" menus?
"OK" are displayed for all the items : Go to Step 2.
"NG" is displayed on the "COLUMN ECU" menu : Refer
to Inspection Procedure A-2 "Communication with
column switch (column-ECU) is not possible
"NG" is displayed on the "FRONT ECU" menu : Refer to
Inspection procedure A-4 "Communication with
front-ECU is not possible
AC309091
MB991911
MB991827
MB991824
AB
MB991806
MB991862
DATA LINK
CONNECTOR
(16-PIN)
DATA LINK
CONNECTOR
(13-PIN)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-310
STEP 2. Check the input signal by using "FUNCTION
DIAG." menu of the SWS monitor.
Check the input signals from the following switches:
• Ignition switch: ON
• Lighting switch: HEAD
• Dimmer switch: ON
Operate scan tool MB991958 according to the procedure below
to display "HEADLIGHT HI."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "LIGHTING."
6. Select "HEADLIGHT HI."
Check that normal conditions are displayed on the items
described in the table below.
Q: Are normal conditions displayed on the "HEADLIGHT
SW", "DIMMER SW", "H/L AUTO-CUT" and "FRONT
ECU ACK"?
Normal conditions are displayed for all the items : Go to
Step 3.
Normal condition is not displayed on the "HEADLIGHT
SW" : Refer to Inspection Procedure O-6 "ETACS-ECU
does not receive any signal from the headlight switch
Normal condition is not displayed on the "DIMMER SW"
:
Refer to Inspection Procedure O-6 "ETACS-ECU
does not receive any signal from the dimmer switch
Normal condition is not displayed on the "H/L
AUTO-CUT" : Refer to Inspection Procedure J-9 "Headlight
automatic shutdown function does not work normally
Normal condition is not displayed on the "FRONT ECU
ACK" : Replace the front-ECU. Verify that the headlights
(high-beam) illuminate normally.
ITEM NO.
ITEM NAME
NORMAL CONDITION
ITEM 00
HEADLIGHT SW
ON
ITEM 02
DIMMER SW
OFF (should turn "ON"
momentarily when the
dimmer switch is
operated)
ITEM 35
H/L AUTO-CUT
OFF
ITEM 70
FRONT ECU ACK HI-BEAM ACK
AC309091
MB991911
MB991827
MB991824
AB
MB991806
MB991862
DATA LINK
CONNECTOR
(16-PIN)
DATA LINK
CONNECTOR
(13-PIN)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-311
STEP 3. Check the front-ECU connector A-07X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is the front-ECU connector A-07X in good condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the headlights (low-beam)
illuminate normally.
STEP 4. Check the battery power supply circuit to the
front-ECU. Test at front-ECU connector A-07X.
(1) Disconnect front-ECU connector A-07X and measure the
voltage available at the relay box side of the connector.
(2) Measure the voltage between terminal 3 and ground.
• The voltage should be approximately 12 volts (battery
positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Replace the front-ECU. Verify that the headlights
(low-beam) illuminate normally.
NO : Go to Step 5.
AC204183
CONNECTOR : A-07X
AB
2 1
3
4
6
7
8
9
5
11 10
RELAY BOX SIDE
AC204183
CONNECTOR : A-07X
AB
2 1
3
4
6
7
8
9
5
11 10
RELAY BOX SIDE
AC204761
1
2
3
4
5
6
7
8
9
10
11
CONNECTOR A-07X
(RELAY BOX SIDE)
AB
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-312
STEP 5. Check the wiring harness between front-ECU
connector A-07X (terminal 3) and the battery.
Q: Is the wiring harness between front-ECU connector
A-07X (terminal 3) 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 headlights (low-beam) illuminate normally.
INSPECTION PROCEDURE J-4: Headlight and Taillight: Headlights do not illuminate when the
passing switch is operated.
NOTE: This troubleshooting procedure requires the
use of scan tool MB991958 and SWS monitor kit
MB991862. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor
.
TECHNICAL DESCRIPTION (COMMENT)
If both of the headlights (low-beam and high-beam)
do not illuminate, the input circuit from the passing
switch or the front-ECU may be defective.
.
TROUBLESHOOTING HINTS
• The column switch may be defective
• The front-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
• MB991813: SWS Monitor Kit
• MB991806: SWS Monitor Cartridge
• MB991812: SWS Monitor Harness (For Column-ECU)
• MB991822: Probe Harness
STEP 1. Verify the headlight operation.
Q: Do the headlights (low-beam and high-beam) illuminate
normally?
Headlights do illuminate normally : Go to Step 2.
Headlights (low-beam) do not illuminate normally :
Refer to Inspection Procedure J-2 "Headlights
(low-beam) do not illuminate normally
."
Headlights (high-beam) do not illuminate normally :
Refer to Inspection Procedure J-3 "Headlights
(high-beam) do not illuminate normally
AC204183
CONNECTOR : A-07X
AB
2 1
3
4
6
7
8
9
5
11 10
RELAY BOX SIDE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст