Mitsubishi Outlander (2013+). Manual — part 663
MB992006
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-137
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC
TROUBLESHOOTING
M1541402500133
Refer to GROUP 00
− Contents of troubleshooting .
DIAGNOSIS FUNCTION
M1541400900083
HOW TO READ DIAGNOSIS CODE
Refer to GROUP 00
− Diagnosis function .
HOW TO ERASE DIAGNOSIS CODE
Refer to GROUP 00
− Diagnosis function .
DIAGNOSIS CODE CHART
M1541400200299
CAUTION
On troubleshooting, if the ignition switch is turned ON while disconnecting connector(s), diagnosis
code(s) associated with other system may be set. On completion, confirm all systems for diagnosis
code(s). If diagnosis code(s) are set, erase them all.
Diagnosis code No.
Diagnostic item
Reference page
B16A7
Tail lamp (RH) circuit short <Short circuit in the
position lamp (RH) circuit or the tail lamp (RH)
circuit>
B16A8
Tail lamp (LH) circuit short <Short circuit in the
position lamp (LH) circuit, tail lamp (LH) circuit or the
licence plate lamp circuit>
DIAGNOSIS CODE PROCEDURES
Code No.B16A7 Tail lamp (RH) circuit short <Short circuit in the position lamp (RH) circuit or the tail
lamp (RH) circuit>
CAUTION
• Before replacing the ECU, ensure that the
power supply circuit, the earth circuit and the
communication circuit are normal.
• When the ETACS-ECU of vehicles without
KOS is replaced, the encrypted code of the
ignition key needs to be registered to the
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in
Immobilizer System
− How to Register Key ID
DIAGNOSTIC FUNCTION
When a short circuit is detected in the position lamp
circuit or the tail lamp circuit, the ETACS-ECU sets
the diagnosis code No. B16A7.
MB992006
Extra fine probe
Continuity check and voltage
measurement at harness wire or
connector
MB990784
MB990784
Ornament
remover
Removal of rear combination lamp
assembly
Tool
Number
Name
Use
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-138
JUDGEMENT CRITERIA
The problem detection of tail lamp is made based on
the digital feed back signal (input signal to
ETACS-ECU) which operates the tail lamp. When the
ignition switch is ON, the ETACS-ECU determines
the tail lamp circuit state from the load placed on the
line. After 100 ms has elapsed since the start of the
check, the ETACS-ECU performs a sampling with
each 10 ms. If an abnormality is detected, it
increases the counter by 2, and when no abnormality
is detected, it decreases the counter by 1. Once the
counter reaches "10," the ETACS-ECU sets the diag-
nosis code No. B16A7 if no load is detected.
PROBABLE CAUSES
• Malfunction of bulbs
• Damaged harness wires and connectors
• Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Bulb check
Check the bulb(s) of the lamp that does not illumi-
nate.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the bulb(s) of the lamp that does
not illuminate.
STEP 2. Resistance measurement at the
headlamp assembly (position: RH) connector,
rear combination lamp (tail: RH) connector (earth
terminals).
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the resistance between the connector
terminal of lamp which does not illuminate and
the body earth.
• Measure the resistance between the head-
lamp assembly (position: RH) connector
(earth terminal) and body earth.
• Measure the resistance between the rear
combination lamp (tail: RH) connector (earth
terminal) and body earth.
OK: Continuity exists (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Go to Step 3.
STEP 3. Check of open circuit in earth lines
between the headlamp assembly (position: RH)
connector , rear combination lamp (tail: RH)
connector and body earth.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the connector(s) or wiring harness.
STEP 4. Check of short to power supply, short to
earth, and open circuit in (TAR1, TAR2) lines
between the headlamp assembly (position: RH)
connector , rear combination lamp (tail: RH)
connector and ETACS-ECU connector.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the connector(s) or wiring harness.
STEP 5. Check whether the diagnosis code is
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)
position to "ON" position.
(3) Check if diagnosis code is set.
Q: Is the diagnosis code set?
YES :
Replace the ETACS-ECU.
NO :
The diagnosis is complete.
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-139
Code No.B16A8 Tail lamp (LH) circuit short <Short circuit in the position lamp (LH) circuit, tail lamp
(LH) circuit or the licence plate lamp circuit>
CAUTION
• Before replacing the ECU, ensure that the
power supply circuit, the earth circuit and the
communication circuit are normal.
• When the ETACS-ECU of vehicles without
KOS is replaced, the encrypted code of the
ignition key needs to be registered to the
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in
Immobilizer System
− How to Register Key ID
DIAGNOSTIC FUNCTION
When a short circuit is detected in the position lamp
circuit, the tail lamp circuit or the licence plate lamp
circuit, the ETACS-ECU sets the diagnosis code No.
B16A8.
JUDGEMENT CRITERIA
The problem detection of tail lamp is made based on
the digital feed back signal (input signal to
ETACS-ECU) which operates the tail lamp. When the
ignition switch is ON, the ETACS-ECU determines
the tail lamp circuit state from the load placed on the
line. After 100 ms has elapsed since the start of the
check, the ETACS-ECU performs a sampling with
each 10 ms. If an abnormality is detected, it
increases the counter by 2, and when no abnormality
is detected, it decreases the counter by 1. Once the
counter reaches "10," the ETACS-ECU sets the diag-
nosis code No. B16A8 if no load is detected.
PROBABLE CAUSES
• Malfunction of bulbs
• Damaged harness wires and connectors
• Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Bulb check
Check the bulb(s) of the lamp that does not illumi-
nate.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the bulb(s) of the lamp that does
not illuminate.
STEP 2. Resistance measurement at the
headlamp assembly (position: LH) connector,
rear combination lamp (tail: LH) connector,
licence plate lamp (LH) connector and licence
plate lamp (RH) connector (earth terminals).
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the resistance between the connector
terminal of lamp which does not illuminate and
the body earth.
• Measure the resistance between the head-
lamp assembly (position: LH) connector
(earth terminal) and body earth.
• Measure the resistance between the rear
combination lamp (tail: LH) connector (earth
terminal) and body earth.
• Measure the resistance between the licence
plate lamp (LH) connector (earth terminal)
and body earth.
• Measure the resistance between the licence
plate lamp (RH) connector (earth terminal)
and body earth.
OK: Continuity exists (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Go to Step 3.
STEP 3. Check of open circuit in earth lines
between the headlamp assembly (position: LH)
connector , rear combination lamp (tail: LH)
connector, licence plate lamp (LH) connector or
licence plate lamp (RH) connector and body
earth.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the connector(s) or wiring harness.
STEP 4. Check of short to power supply, short to
earth, and open circuit in (TAL1, TAL2) lines
between the headlamp assembly (position: LH)
connector , rear combination lamp (tail: LH)
connector, licence plate lamp (LH) connector or
licence plate lamp (RH) connector and
ETACS-ECU connector.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the connector(s) or wiring harness.
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-140
STEP 5. Check whether the diagnosis code is
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF)
position to "ON" position.
(3) Check if diagnosis code is set.
Q: Is the diagnosis code set?
YES :
Replace the ETACS-ECU.
NO :
The diagnosis is complete.
TROUBLE SYMPTOM CHART
M1541401000500
Trouble symptom
Inspection
Procedure No.
Reference page
None of the tail lamps illuminate.
1
The stop lamps do not illuminate or go out normally.
2
SYMPTOM PROCEDURES
Inspection Procedure 1: None of the tail lamps illuminate.
CAUTION
• Before replacing the ECU, ensure that the
power supply circuit, the earth circuit and the
communication circuit are normal.
• When the ETACS-ECU of vehicles without
KOS is replaced, the encrypted code of the
ignition key needs to be registered to the
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in
Immobilizer System
− How to Register Key ID
COMMENTS ON TROUBLE SYMPTOM
If all the tail lamps do not illuminate normally, the tail
lamp switch input circuit or ETACS-ECU may have a
problem.
PROBABLE CAUSES
• Malfunction of column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Licence plate lamp operation check
Check that the licence plate lamp illuminates nor-
mally.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the ETACS-ECU.
STEP 2. M.U.T.-III diagnosis code
Check if diagnosis code is set to the ETACS-ECU.
Q: Is the diagnosis code set?
YES :
Troubleshoot the ETACS-ECU. Refer to
.
NO :
Go to Step 3.
STEP 3. M.U.T.-III data list
Use the ETACS-ECU service data to check the sig-
nals related to the tail lamp illumination.
•
Item No.
Item name
Normal
condition
Item 340
Head lamp
switch (tail)
ON
Turn the lighting switch to the "TAIL" position.
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 11 "The column
switch signal is not received"
.
STEP 4. Retest the system
Check that the tail lamp illuminates normally.
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 ).
NO :
Replace the ETACS-ECU.
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