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Mitsubishi Montero (2004+). Manual - part 489

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

TSB Revision

WHEEL AND TIRE

31-27

STEP 5. Check the following harness wire.

• The wire between junction block connector D-220 (terminal

1) and TPMS receiver connector G-28 (terminal 3)

Q: Is the harness wire damaged?

YES : Repair or replace it. And then go to Step 7.
NO : Go to Step 6.

STEP 6. Using scan tool MB991958, check data list item 04:
VSS (Vehicle Speed Signal).

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) Check the following data list.

• Item 04: VSS (Vehicle Speed Signal)

(3) Drive the vehicle at 30 km/h (19 mph) or more, and

compare the value shown on scan tool MB991958 with the
speedometer in the combination meter.

Q: Does the vehicle speed shown on scan tool MB991958

correspond to that on the speedometer?
YES : It can be assumed that this malfunction is intermittent.

Go to Step 7.

NO : Replace the TPMS receiver. And then execute "Tire

Pressure Sensor ID Registration" (Refer to

P.31-89

And then go to Step 7.

AC204173

CONNECTOR : D-220

HARNESS SIDE

AC307592

G-28

9 8

2 1

HARNESS CONNECTOR:
COMPONENT SIDE

CONNECTOR: G-28

AC306409AF

MB991911

MB991824

MB991827

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

TSB Revision

WHEEL AND TIRE

31-28

STEP 7. Recheck for diagnostic trouble code.

Drive the vehicle for a while at 5 km/h (3 mph) or more and then
check the diagnostic trouble code.
Q: Does diagnostic trouble code 14 reset?

YES : Repeat the troubleshooting from Step 1.
NO : The procedure is complete.

DTC 17/43/44/45/46/47: TPMS Abnormality (Transmitter OFF Mode)

TPMS DTC SET CONDITION
DTC 17, 43, 44, 45, 46, or 47 is set if the TPMS is in
the "Transmitter OFF Mode." At the same time this
DTC is set, the TPMS warning light flashes.

• Transmitting signal of the TPMS transmitter

should be stopped during transportation to dealer
because it will break Japanese radio wave regu-
lation.

• OFF mode is canceled at dealer. So, output

warning and set DTC 17 (Transmitter OFF Mode,
ALL Tire) during transmitter OFF mode for
reminding cancel of OFF mode.

• When the TPMS receiver receives the signals

from all registered tire pressure sensor, the
TPMS receiver clears the warning.

TPMS DTC CLEAR CONDITION
When the TPMS receiver receives the signals from
all registered tire pressure sensor, the TPMS
receiver clears the warning.

TROUBLESHOOTING HINT
Execute "Tire Pressure Sensor ID Registration" on
scan tool MB991958 "Special Function."

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

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

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WHEEL AND TIRE

31-29

STEP 1. Execute "Tire Pressure Sensor ID Registration" on
scan tool MB991958 "Special Function." And then recheck
for diagnostic trouble code.

CAUTION

P.31-89

(4) Check the diagnostic trouble code.
Q: Does diagnostic trouble code 17/43/44/45/46/47 reset?

YES <DTC17> : Replace the TPMS receiver and then

execute "Tire Pressure Sensor ID Registration" (Refer
to

P.31-89

). And then go to Step 2.

YES <DTC43/44/45/46/47> : Replace the faulty TPMS

transmitter and then execute "Tire Pressure Sensor
ID Registration" (Refer to

P.31-89

). And then go to

Step 2.

NO : Go to Step 2.

STEP 2. Recheck for diagnostic trouble code.
Q: Does diagnostic trouble code 17/43/44/45/46/47 reset?

YES : Repeat the troubleshooting from Step 1.
NO : The procedure is complete.

DTC 21/25/29/34/38: TPMS Transmitter Abnormality (Transmitter Battery Voltage)

TPMS DTC SET CONDITION
DTC 21, 25, 29, 34 or 38 is set if the battery in the
TPMS transmitter is discharged. At the same time
this DTC is set, the TPMS warning light flashes.

TROUBLESHOOTING HINT
Replace the TPMS transmitter if its battery is dis-
charged.
NOTE: The battery cannot be removed from the
TPMS transmitter. Nominal service life of the battery
is 10 years or 160,000 km (100,000 miles).

AC306409AF

MB991911

MB991824

MB991827

TIRE PRESSURE MONITORING SYSTEM (TPMS) DIAGNOSIS

TSB Revision

WHEEL AND TIRE

31-30

DIAGNOSIS
NOTE: To help determine which TPMS transmitter is defective,
make a note of the tire pressure sensor ID, which the DTC indi-
cates, prior to the troubleshooting.

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. Execute "Tire Pressure Sensor Check" on scan
tool MB991958 "Special Function."

CAUTION

P.31-91

Q: Is information on the tire pressure sensor displayed on

scan tool MB991958 after the TPMS transmitter is
activated?
YES : Determine which TPMS transmitter is defective by

using scan tool MB991958, and replace its TPMS
transmitter. Then execute "Tire Pressure Sensor ID
Registration" (Refer to

P.31-89

). And then go to Step

NO : Replace the TPMS transmitter, which is not activated

and then execute "Tire Pressure Sensor ID
Registration" (Refer to

P.31-89

). And then go to Step

2. (If the TPMS transmitter is not activated and no
data is displayed, the TPMS transmitter battery is
completely flat).

STEP 2. Recheck for diagnostic trouble code.
Q: Does diagnostic trouble code 21, 25, 29, 34 or 38 reset?

YES : Repeat the troubleshooting from Step 1.
NO : The procedure is complete.

AC306409AF

MB991911

MB991824

MB991827

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