Mitsubishi Evolution X. Manual - part 862

 

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Mitsubishi Evolution X. Manual - part 862

 

 

PARKING BRAKE DIAGNOSIS

TSB Revision

PARKING BRAKES

36-5

TECHNICAL DESCRIPTION (COMMENT)

The parking brake switch turns on and off by operat-
ing the parking brake lever, and the brake warning 
light illuminates and goes out, indicating the operat-
ing status of parking brake to a driver.

.

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

• Damaged wiring harness or connector

• Parking brake switch defective

• Combination meter defective 

.

DIAGNOSIS

Required Special Tools:

• 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

STEP 1. Using scan tool MB991958, check combination 
meter actuator test.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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.
(2) Turn the ignition switch to the "ON" position.
(3) Turn the parking brake switch and brake fluid level switch to 

"OFF" position.

(4) Set scan tool MB991958 to the actuator test mode.

• Item 13: Indicator lamp 4: ON

• The brake warning light illuminates.

• Item 13: Indicator lamp 4: OFF

• The brake warning light goes out.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Replace the combination meter (Refer to GROUP 

54A, Combination meter assembly 

P.54A-101

).

STEP 2. Check the parking brake switch.
Refer to 

P.36-12

.

Q: Is the parking brake switch normal?

YES : Go to Step 3.
NO :  Replace the parking brake switch. Then go to Step 7.

PARKING BRAKE DIAGNOSIS

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PARKING BRAKES

36-6

STEP 3. Check parking brake switch connector C-122, 
intermediate connector C-23 and combination meter 
connector C-04 for loose, corroded or damaged terminals, 
or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 4.
NO :  Repair or replace the faulty connector. (Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

). Then go to Step 7.

STEP 4. Check the harness wire parking brake switch 
connector C-122 terminal 1 and combination meter 
connector C-04 terminal 4 for damage.
Q: Are the harness wires in good condition?

YES : Go to Step 5.
NO :  Repair the damaged harness wire. Then go to Step 7.

STEP 5. Check the parking brake switch ground for 
damage.
Q: Is the parking brake switch ground in good condition?

YES : Go to Step 6.
NO :  Repair the ground or damaged harness wire. Then go 

to Step 7.

STEP 6. Retest the system.
Q: Does the brake warning light illuminate when the 

parking brake lever is pull?
YES : 
It can be assumed that this malfunction is intermittent. 

(Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

NO :  Replace the combination meter (Refer to GROUP 

54A, Combination meter assembly 

P.54A-101

).

STEP 7. Retest the system.
Q: Does the brake warning light illuminate when the 

parking brake lever is pulled?
YES : 
The procedure is complete.
NO :  Return to Step 1.

PARKING BRAKE DIAGNOSIS

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PARKING BRAKES

36-7

INSPECTION PROCEDURE 3: When the Parking Brake Lever is Released, the Brake Warning Light 
does not Turn Off.

AC709249 AB

Brake Waring Light Circuti

INTERFACE 
CIRCUIT

COMBINATION 
METER

PARKING 
BRAKE SWITCH

AC708950

Connector: C-04

AR

AC708951AN

C-23

C-122

Connectors: C-23, C-122

.

TECHNICAL DESCRIPTION (COMMENT)

The parking brake switch turns on and off by operat-
ing the parking brake lever, and the brake warning 
light illuminates and goes out, indicating the operat-
ing status of parking brake to a driver.

.

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

• Damaged wiring harness or connector

• Parking brake switch defective

• Combination meter defective 

.

DIAGNOSIS

Required Special Tools:

• 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

PARKING BRAKE DIAGNOSIS

TSB Revision

PARKING BRAKES

36-8

STEP 1. Using scan tool MB991958, check combination 
meter actuator test.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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.
(2) Turn the ignition switch to the "ON" position.
(3) Turn the parking brake switch and brake fluid level switch to 

"OFF" position.

(4) Set scan tool MB991958 to the actuator test mode.

• Item 13: Indicator lamp 4: ON

• The brake warning light illuminates.

• Item 13: Indicator lamp 4: OFF

• The brake warning light goes out.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Replace the combination meter (Refer to GROUP 

54A, Combination meter assembly 

P.54A-101

).

STEP 2. Check the parking brake switch.
Refer to 

P.36-12

.

Q: Is the parking brake switch normal?

YES : Go to Step 3.
NO :  Replace the parking brake switch. Then go to Step 7.

STEP 3. Check parking brake switch connector C-122, 
intermediate connector C-23 and combination meter 
connector C-04 for loose, corroded or damaged terminals, 
or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 4.
NO :  Repair or replace the faulty connector. (Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

). Then go to Step 7.

STEP 4. Check the harness wire parking brake switch 
connector C-122 terminal 1 and combination meter 
connector C-04 terminal 4 for damage.
Q: Are the harness wires in good condition?

YES : Go to Step 5.
NO :  Repair the damaged harness wire. Then go to Step 7.

 

 

 

 

 

 

 

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