Mitsubishi Montero (2004+). Manual — part 496

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

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WHEEL AND TIRE

31-55

INSPECTION PROCEDURE 2: The TPMS Warning Light Flashes.

.

CIRCUIT OPERATION

• The TPMS warning light will flash when a fault

has occurred in the TPMS.

• The TPMS warning light may also flash when a

fault has occurred in the TPMS warning light sig-
nal circuit (including open circuit and shorted cir-
cuit).

.

COMBINATION
METER

TPMS
RECEIVER

TPMS Warning Light Signal Circuit

AC204170

CONNECTOR: D-04

EI

D-04 (GR)

AC204171

CONNECTOR : D-112

AU

AC307592

G-28

CONNECTOR: G-28

AD

THIRD SEAT
BELT (RH)

TPMS RECEIVER

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

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WHEEL AND TIRE

31-56

TECHNICAL DESCRIPTION (COMMENT)

• If any TPMS DTCs are set, carry out the relevant

troubleshooting.

• If no TPMS DTC is set, carry out the trouble-

shooting for the TPMS warning light signal circuit.

.

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

• A fault has occurred in the TPMS.

• Damaged harness wire or connector in the TPMS

warning light signal circuit

• Malfunction of the combination meter

• Malfunction of the TPMS receiver

.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

.

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code.

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) Check whether any TPMS DTC is set.
Q: Is any TPMS DTC set?

YES : Carry out the relevant TPMS troubleshooting (Refer

to

P.31-19

).

NO : Go to Step 2.

AC306409AF

MB991911

MB991824

MB991827

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

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WHEEL AND TIRE

31-57

STEP 2. Check the following connectors.

• Combination meter connector D-04

• Intermediate connector D-112

• TPMS receiver connector G-28

Check the connectors for loose, corroded or damaged termi-
nals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 3.
NO : Repair it. Then go to Step 5.

AC204170

CONNECTOR: D-04

EL

D-04

COMBINATION METER
CONNECTOR

D-04 (GR)

AC204171 AL

CONNECTOR : D-112

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

AC307592 AE

CONNECTOR : G-28

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

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WHEEL AND TIRE

31-58

STEP 3. Check the following harness wire.

• The wire between combination meter connector D-04 (ter-

minal 41) and TPMS receiver connector G-28 (terminal 7)

Q: Is the harness wire damaged?

YES : Repair or replace it. Then go to Step 5.
NO : Go to Step 4.

STEP 4. Check the combination meter.

Check that the combination meter warning lights and indicators
other than TPMS warning light illuminate normally.
Q: Are there any faults on the combination meter?

YES : Replace the meter assembly (Refer to

P.54A-78

).

Then go to Step 5.

NO : Replace the TPMS receiver (Refer to

P.31-96

) and

execute "Tire Pressure Sensor ID Registration" on
scan tool MB991958 "Special Function" (Refer to

P.31-89

). Then go to Step 5.

STEP 5. Retest the system.
Q: Turn the ignition switch to the "ON" position. Does the

TPMS warning light illuminate for three seconds, and
then go out?
YES : The procedure is complete.
NO : Repeat the troubleshooting from Step 1.

AC204170

CONNECTOR : D-04

AD

D-04(GR)

HARNESS
SIDE

D-04(GR)

31

32

41 40

33

34

36

37

35

43

46 45 44

39

42

38

47

AC307592

G-28

AF

G-28

10

5

6

7

9 8

3

4

2 1

HARNESS CONNECTOR:
COMPONENT SIDE

CONNECTOR: G-28