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Acura CSX. Manual - part 366

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System Indicator

The Low Tire Pressure Indicator

The TPMS Indicator

DTC 11, 13, 15, 17

Tire Pressure Changing by Temperature

18-49

General Troubleshooting Information

Low Tire Pressure
Indicator

TPMS
Indicator

104

140

psi
(kgf/cm , kPa)

38
(2. 6, 260)

35
(2. 4, 240)

32
(2. 2, 220)

29
(2. 0, 200)

26
(1. 8, 180)

23
(1. 6, 160)

20
(1. 4, 140)

The TPMS (tire pressure monitoring system) has the
low tire pressure indicator and the TPMS indicator.

• If the system detects low pressure in any of the four

tires, the low tire pressure indicator comes on.

• When this happens, inflate the air and test-drive the

vehicle at 45 km/h (28 mph) or more for at least 1
minute, and the low tire pressure indicator will go off.

• If the control unit detects a problem in the system

during an indication of low tire pressure, it turns off
the low tire pressure indicator, stores the DTC(s), and
turns on the TPMS indicator.

• If a problem is detected in the system, the TPMS

indicator comes on.

• If low tire pressure and a problem in the system are

detected, only the TPMS indicator comes on.

If the system is OK, the TPMS indicator and the low
tire pressure indicator should come on when you turn
the ignition switch to ON (II), and then go off 2
seconds later. If they don’t, there is a problem with
the system.

If the system detects low pressure in any of the four
tires, the low tire pressure indicator comes on, and the
control unit sets one or more of these codes: DTC 11,
13, 15, 17. When the tire pressure returns to normal,
and the TPMS control unit receives the normal pressure
signal from the tire pressure sensor, the control unit
turns off the indicator. However TPMS control unit still
retains the DTC(s).

NOTE: It is necessary to test-drive the vehicle at
45 km/h (28 mph) or more for at least 1 minute so that
tire pressure sensor transmits the signal.

The pressures increase slightly as the temperature in
the tires rises during driving.
Pressures can also increase or decrease slightly with
changes in outside air temperature.
A temperature change of about 10 °C (18 °F) changes
tire pressure by about 10 kPa (0.1 kgf/cm , 1.5 psi). If the
temperature drops, tire pressure could decrease just
enough to turn on the low tire pressure indicator, but
later, the tire temperature could increase enough to
turn the indicator off. To resolve a complaint of such
intermittent indications, confirm and clear the stored
DTC(s) and check the tire pressures. Then explain to the
client how temperature changes can affect the system.

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Problems That Are Not System Faults

How a Diagnostic Trouble Code (DTC) is Set

How to Troubleshoot DTCs

18-50

TPMS

• Tire Sealant

Fluid sealant used to repair a punctured tire can
damage the tire pressure sensor mounted on each
wheel. It can prevent the system from detecting the
correct tire pressure, which sets a DTC 11, 13, 15, or
17 even though the system is normal.

• Cold Weather

When the weather is extremely cold, about

40 °C

(

40 °F) or colder, the output of the lithium battery in

each tire pressure sensor may drop far enough that
the control unit sets a DTC for low battery voltage (31,
33, 35, or 37) even though the system is normal.

• Non-TPMS Wheels (Including Spare Tire)

Vehicles equipped with TPMS must use wheels made
for the system. Every TPMS wheel has an exclusive
mark; do not use any other type of wheel.
When a flat tire is replaced with the spare tire, the
TPMS indicator comes on (DTC 32, 34, 36, or 38)
because the system is no longer receiving the signal
from the flat tire’s transmitter.
This is not a problem with the spare tire.

• When the system detects a problem, the TPMS

control unit sets a code, but shifts to fail-safe mode,
and does not alert the driver to low tire pressures.

• If the TPMS control unit loses power, or fails, the

TPMS indicator comes on, but no DTCs are set.

• The memory can hold all the DTCs that could

possibly be set. However, when the same DTC is
detected more than once, the most recent one
overwrites the previous one, so only the latest DTC of
each type is stored.

• DTCs are indicated in ascending order, not in the

order they occurred.

• Set DTCs are stored in the EEPROM (nonvolatile

memory), and cannot be cleared by disconnecting the
battery. To clear a DTC, connect the HDS (Honda
Diagnostic System) to the data link connector (DLC),
and follow the screen prompts.

DTC troubleshooting procedures assume the cause of
the problem is still present and the TPMS indicator is
still on. Do not use a troubleshooting procedure unless
the system has set the DTC listed for it.

NOTE: For DTCs 11, 13, 15, and 17 (tire low pressure),
the TPMS indicator comes on only if the DTCs are
caused by a system problem rather than low tire
pressure.

1. Ask the client to describe the conditions when the

indicator came on, and try to reproduce the same
conditions for troubleshooting. Find out if the client
checked and/or adjusted tire pressures since the
indicator came on.

2. If an indicator does not come on during the test-

drive, check for loose terminals, poor contact due
to damaged terminals, etc. Before you start
troubleshooting.

3. After troubleshooting, repair and clear the DTCs,

and test-drive the vehicle. Make sure no indicators
come on.

4. Check for DTCs from other control units that are

connected via the F-CAN. If there are DTCs that are
related to the F-CAN, the most likely cause was that
the ignition switch was turned to ON (II) with the
TPMS control unit connector disconnected. Clear
the DTCs. Check for PGM-FI and TPMS codes, and
troubleshoot those first.

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How to Retrieve DTCs

How to Clear DTCs

18-51

1. With the ignition switch in LOCK (0), connect the

HDS (Honda Diagnostic System) to the data link
connector (DLC) (A) located under the driver’s side
of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle

and the TPMS control unit. If it doesn’t,
troubleshoot the DLC circuit (see page 11-204).

4. Follow the prompts on the HDS to display the

DTC(s) on the screen. After determining the DTC,
refer to the DTC troubleshooting.

NOTE: See the HDS Help menu for specific
instructions.

5. Turn the ignition switch to LOCK (0).

1. With the ignition switch in LOCK (0), connect the

HDS to the data link connector (DLC) (A) located
under the driver’s side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle

and the TPMS control unit. If it doesn’t,
troubleshoot the DLC circuit (see page 11-204).

4. Clear the DTC(s) by following the screen prompts

on the HDS.

NOTE: See the HDS Help menu for specific
instructions.

5. Turn the ignition switch to LOCK (0).

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Special Tools Required

18-52

TPMS

Memorizing the Tire Pressure Sensor ID

TPMS tool J-48714

Bartech Wheelrite Tech300 TPMS tool J-48714
Available through Honda Canada Inc. Technical Tools
Department; Fax

866-398-8665/

e-mail: ch_technicaltools

ch.honda.com

All four tire pressure sensor IDs must be memorized to
the TPMS control unit whenever you do any of these
actions:

• Replace the TPMS control unit.
• Replace the tire pressure sensor.
• Substitute a known-good wheel with tire pressure

sensor.

NOTE:

• To ensure the control unit memorizes the correct ID,

the vehicle with the new sensor must be at least 3 m
(10 ft) away from other vehicles that have tire
pressure sensors.

• When doing a tire rotation, memorizing the sensors

in not needed.

1. With the ignition switch in LOCK (0), connect the

HDS to the data link connector (DLC) (A) located
under the driver’s side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle

and the TPMS control unit. If it doesn’t,
troubleshoot the DLC circuit (see page 11-204).

4. Select Sensor ID Learning from the mode menu on

the HDS.

5. Turn on the TPMS tool by pressing the green select

button. Press the green select button until the
proper light sequence is illuminated as per the tool
user’s manual.

6. Hold the TPMS tool near one wheel, memorize the

tire pressure sensor ID by following the screen
prompts on the HDS.

NOTE:

• If you turn the ignition switch to LOCK (0) before

memorizing all four sensor IDs, the memorizing
ID is canceled.

• See the HDS Help menu for specific instructions.

7. Repeat step 6 for each wheel until all four sensor

IDs are memorized. When all four IDs are
memorized, the low tire pressure indicator blinks.

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