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Mitsubishi Outlander GS45X. Manual - part 1595

CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-29

DTC 22: Stoplight Switch System.

ACA03181

FUSIBLE
LINK

WHITE

ETACS-ECU

GREEN-WHITE

STOPLIGHT
SWITCH

BLUE

BLACK

RED-

WHITE

RED-

WHITE

STOPLIGHT
RELAY

RED-WHITE

ENGINE CONTROL MODULE (ECM)

CAN DRIVE
CIRCUIT

INTERFACE
CIRCUIT

BLACK

ORANGE

JOINT
CONNECTOR
(CAN2)

GREEN-

WHITE

YELLOW

JOINT
CONNECTOR
(CAN3)

GREEN-

RED

PINK

GREEN-

WHITE

YELLOW

Stoplight Switch System Circuit

CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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CIRCUIT OPERATION

• For the stoplight switch, two switches, a stoplight

switch for the stoplight illumination and a brake
switch exclusively for the cruise control system,
are incorporated to improve the reliability.

• As for the stoplight switch, when the brake pedal

is depressed/released, the stoplight switch
ON/OFF signal is transmitted from the
ETACS-ECU to the ECM via CAN bus line.

• As for the brake switch, the ECM connector B-11

terminal number 108 monitor the state of the
brake switch. The brake switch turn ON/OFF
when the brake pedal is depressed/released, and
the input signal to the ECM connector B-11 termi-
nal number 108 changes. According to this
change, the ECM judges the state of the brake
switch.

DTC SET CONDITIONS

Check Condition

• The "CRUISE" indicator light illuminates.

Judgment Criteria

• Open/short in stoplight switch circuit.

• Open circuit in the brake switch circuit (between

ECM connector B-11 terminal number 108 and
body ground.)

• Malfunction of CAN bus line.

TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)

• Malfunction of CAN bus system.

• Damaged harness or connector.

• Malfunction of the fuse No.2 at the ETACS-ECU.

• Malfunction of the stoplight switch.

• Malfunction of the stoplight relay.

• Malfunction of the ETACS-ECU.

• Malfunction of the ECM.

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

• MB991223: Harness Set

• MB992006: Extra Fine Probe

CAUTION

If there is any problem in the CAN bus lines, an incorrect
DTC may be set. Prior to this diagnosis, diagnose the CAN
bus lines (Refer to GROUP 54C, Trouble code diagnosis

P.54C-11

AC703918AB

B-11 (GR)

Connector: B-11

ACA03170

Connector: C-124

CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

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 to the data link connector

(Refer to

P.17-12

(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to diagnose the CAN bus line

(Refer to

P.17-12

Q: Is the check result satisfactory?

YES : Go to Step 2.
NO : Repair the CAN bus lines (Refer to GROUP 54C,

Diagnosis

− CAN Bus Diagnostics Chart

P.54C-19

Then go to Step 12.

STEP 2. Using scan tool MB991958, check the data list
item 74: Brake light switch.
(1) Connect scan tool MB991958 to the data link connector

(Refer to

P.17-12

(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode for cruise

control system (Refer to

P.17-12

• Item 74: Brake light switch.

• When the brake pedal is depressed, the display on

scan tool MB991958 should be "ON".

• When the brake pedal is released, the display on

scan tool MB991958 should be "OFF".

Q: Is the switch operating properly?

YES : Go to Step 6.
NO : Go to Step 3.

ZC501967

AC404789

AC703911AB

MB991824

MB991827

MB991910

Data link

connector

CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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STEP 3. Check the stoplight operation.
Check the stoplight operation.

OK:

Brake pedal depressed: Stoplight will illuminate
Brake pedal not depressed: Stoplight does not illu-

minate

Q: Is the stoplight operating properly?

YES : Go to Step 4.
NO : Check the stoplight system (Refer to GROUP 54A,

Rear Combination Lamp, Symptom Procedures

−

Inspection Procedure 3

P.54A-258

). Then go to Step

12 .

STEP 4. Using scan tool MB991958, check the ETACS
system data list item 290: Brake light switch.
(1) Connect scan tool MB991958 to the data link connector

(Refer to

P.17-12

(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode for ETACS

system (Refer to GROUP 54A, Data List Reference Table

P.54A-798

• Item 290: Brake light switch.

• When the brake pedal is depressed, the display on

scan tool MB991958 should be "ON".

• When the brake pedal is released, the display on

scan tool MB991958 should be "OFF".

Q: Is the switch operating properly?

YES : Go to Step 5.
NO : Replace the ETACS-ECU (Refer to GROUP 54A,