Mitsubishi Outlander GS45X. Manual — part 58

REAR COMBINATION LIGHT

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DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC B16A0: Taillight (RH) circuit open <Open circuit in the position light (RH) circuit, rear side marker
light (RH) circuit and the taillight (RH) circuit>

DTC B16A7: Taillight (RH) circuit short <Short circuit in the position light (RH) circuit, rear side
marker light (RH) circuit or the taillight (RH) circuit>

Taillight (RH) Circuit

REAR
COMBINATION
LIGHT (TAIL: RH)

REAR SIDE
MARKER
LIGHT (RH)

ETACS-ECU

TAILLIGHT
CONTROL CIRCUIT

HEADLIGHT
ASSEMBLY
(POSITION: RH)

REAR COMBINATION LIGHT

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CHASSIS ELECTRICAL

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.

TROUBLE JUDGMENT

When an open circuit is detected in the taillight cir-
cuit, the ETACS-ECU sets DTC B16A0. If a short cir-
cuit is detected, DTC B16A7 is set.

.

TECHNICAL DESCRIPTION (COMMENT)

The problem detection of taillight is made based on
the digital feed back signal (input signal to
ETACS-ECU) which operates the taillight. When the
ignition switch is "ON", the ETACS-ECU determines
the taillight 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 DTC
B16A0 if the load is detected on the line, and sets the
DTC B16A7 if no load is detected.

.

TROUBLESHOOTING HINTS

• Malfunction of bulbs

• Malfunction of rear combination light unit (RH)

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• Malfunction of the ETACS-ECU

DIAGNOSIS

Required Special Tools:

• MB992006: Extra fine probe

• 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)

AC901112

Connector: A-56

A-56 (B)

AT

ACA02655AX

Connectors: C-304, C-311

C-304

C-311

AC702817AE

Connector: D-09

AC803008

AG

Connectors: F-10, F-15, F-18

F-10

F-15 (B)

F-18

REAR COMBINATION LIGHT

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STEP 1. Bulb check.
Check the bulb of the light that does not illuminate.
Q: Is the check result normal?

YES : Go to Step 2.
NO : Replace the bulb of the light that does not illuminate.

STEP 2. Check headlight assembly (RH) connector A-56
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is headlight assembly (RH) connector A-56 in good

condition?
YES : Go to Step 3.
NO : Repair the damaged parts.

STEP 3. Resistance measurement at headlight assembly
(RH) connector A-56.
(1) Disconnect the connector, and measure at the wiring

harness side.

(2) Measure the resistance between headlight assembly (RH)

connector A-56 (terminal No. 6) and the body ground.

The measured value should be continuity exists (2
Ω or less).

Q: Does the measured resistance value correspond with

this range?
YES : Go to Step 5.
NO : Go to Step 4.

STEP 4. Check the wiring harness between headlight
assembly (RH) connector A-56 (terminal No. 6) and
ground.
Check the ground line for open circuit.
Q: Is the wiring harness between headlight assembly (RH)

connector A-56 (terminal No. 6) and ground in good
condition?
YES : Go to Step 17.
NO : Repair the wiring harness.

STEP 5. Check ETACS-ECU connectors C-304 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connectors C-304 in good condition?

YES : Go to Step 6.
NO : Repair the damaged parts.

AC702818 DY

Harness side: A-56

REAR COMBINATION LIGHT

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STEP 6. Check the wiring harness between headlight
assembly (RH) A-56 connector (terminal No. 4) and
ETACS-ECU connector C-304 (terminal No. 7).
Check the communication line for open or short circuit.
Q: Is the wiring harness between headlight assembly (RH)

A-56 connector (terminal No. 4) and ETACS-ECU
connector C-304 (terminal No. 7) in good condition?
YES : Go to Step 7.
NO : Repair the wiring harness.

STEP 7. Check rear side marker light (RH) connector F-10
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is rear side marker light (RH) connector F-10 in good

condition?
YES : Go to Step 8.
NO : Repair the damaged parts.

STEP 8. Resistance measurement at rear side marker light
(RH) connector F-10.
(1) Disconnect the connector, and measure at the wiring

harness side.

(2) Measure the resistance between rear side marker light (RH)

connector F-10 (terminal No. 1) and the body ground.

The measured value should be continuity exists (2
Ω or less).

Q: Does the measured resistance value correspond with

this range?
YES : Go to Step 10.
NO : Go to Step 9.

STEP 9. Check the wiring harness between rear side
marker light (RH) connector F-10 (terminal No. 1) and
ground.
Check the ground line for open circuit.
NOTE: Before the wiring harness check, check the F-15, F-18
and repair that if necessary.
Q: Is the wiring harness between rear side marker light

(RH) connector F-10 (terminal No. 1) and ground in good
condition?
YES : Go to Step 17.
NO : Repair the wiring harness.

AC702818

Harness side: F-10

DB