Mitsubishi Evolution X. Manual - part 960

 

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Mitsubishi Evolution X. Manual - part 960

 

 

REAR COMBINATION LIGHT

TSB Revision

CHASSIS ELECTRICAL

54A-201

STEP 6. Check wiring harness between headlight 
assembly connector, rear combination light connector and 
taillight connector and ETACS-ECU connector.
Check the power supply line for open circuit or short circuit.

• Check the wiring harness between headlight assembly (RH) 

connector A-57 (terminal 4) and ETACS-ECU connector 
C-304 (terminal 3).

• Check the wiring harness between rear combination light 

(RH) connector F-06 (terminal 3) and ETACS-ECU connec-
tor C-311 (terminal 13).
NOTE: Also check intermediate connectors D-11 and joint 
connector C-43 for loose, corroded, or damaged terminals, 
or terminals pushed back in the connector. If intermediate 
connector D-11 or joint connector C-43 is damaged, repair 
or replace the connector as described in GROUP 00E, Har-
ness Connector Inspection 

P.00E-2

.

• Check the wiring harness between taillight (RH) connector 

F-07 (terminal 2) and ETACS-ECU connector C-311 (termi-
nal 13).
NOTE: Also check intermediate connectors D-17 and F-27 
and joint connector C-43 for loose, corroded, or damaged 
terminals, or terminals pushed back in the connector. If 
intermediate connector D-17 or F-27 or joint connector C-43 
is damaged, repair or replace the connector as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between headlight assembly 

connector, rear combination light connector or taillight 
connector and ETACS-ECU connector in good 
condition?
YES : Go to Step 7.
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.

REAR COMBINATION LIGHT

TSB Revision

CHASSIS ELECTRICAL

54A-202

STEP 7. Using scan tool MB991958, Check whether the 
diagnostic trouble code is reset.

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 scan tool MB991958. Refer to "How to connect 

scan tool (M.U.T.-III) 

P.54A-194

."

(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTC.
(4) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(5) Check if DTC is set.
Q: Is the DTC set?

YES : Replace the ETACS-ECU.
NO :  The procedure is complete.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

REAR COMBINATION LIGHT

TSB Revision

CHASSIS ELECTRICAL

54A-203

DTC B16A1: Taillight (LH) circuit open (Open circuit in taillight (LH), position light (LH), or license 
plate light)

 

DTC B16A8: Taillight (LH) circuit short (Short circuit in taillight (LH), position light (LH), or license 
plate light)

Taillight, Position Light and License Plate Light Circuit

REAR
COMBINATION
LIGHT  
(TAILLIGHT: LH)

ETACS-ECU

TAILLIGHT 
CONTROL CIRCUIT

TAILLIGHT 
(LH)

     LICENCE
     PLATE
     LIGHT
(LH)       (RH)

HEADLIGHT
ASSEMBLY
(POSITION
 LIGHT: LH)

AC708949AH

Connector: A-40

A-40 (B)

AC708972

Connectors: C-304, C-311

AW

C-311

C-304

REAR COMBINATION LIGHT

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CHASSIS ELECTRICAL

54A-204

.

TROUBLE JUDGMENT

When an open circuit is detected in the taillight, posi-
tion light or license plate light circuit, the 
ETACS-ECU sets DTC B16A1. If a short circuit is 
detected, DTC B16A8 is set.

.

TECHNICAL DESCRIPTION (COMMENT)

The problem detection of taillight, position light or 
license plate light is made based on the digital feed 
back signal (input signal to ETACS-ECU) which oper-
ates the taillight, position light or license plate light. 
When the ignition switch is "ON", the ETACS-ECU 
determines the taillight, position light or license plate 
light 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 
B16A1 if the load is detected on the line, and sets the 
DTC B16A8 if no load is detected.

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

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

• Malfunction of bulbs

• 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)

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

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

illuminate.

AC708955AL

Connector: D-17

D-17 (BR)

AC708970AO

Connectors: F-15, F-18, F-24, F-25, F-27

F-25

F-15 (GR)

F-18 (GR)

F-27

F-24 (GR)

 

 

 

 

 

 

 

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