2006 ACURA CSX turn signal

SymptomProbable cause
17-78EPS Components
Steering Gearbox Removal and Installation (cont’d)
34. Install the steering wheel (see page 17-8).
35. With the tires raised off the ground (vehicle on a
lift), check for the following symptoms by turning
the steering wheel fully to the right and left several
times.
Rubbing sound
coming from the
lower steering
column area. Steering column joint
is contacting the cover.
Grating sound from
the lower steering
column area, or a
rough feeling during
steering. Poor engagement of
the pinion shaft
serrations.
Noise from around
the steering wheel
during steering. Poor engagement of
the SRS cable reel with
the steering wheel, or a
damaged cable reel.
36. Install the air cleaner housing (see page 11- 345).
37. Install the under cowl panel and cowl cover (see page 20-163). 38. Do the battery terminal reconnection procedure
(see page 22-68), and do these tasks:
 Turn the ignition switch to ON (II) and check that the SRS indicator comes on for about 6 seconds
and then goes off.
 Make sure the horn and turn signal switches work properly.
 Make sure the steering wheel switches work properly.
39. After installation, do the following checks:  Check the steering wheel spoke angle. If steeringspoke angles to the right and left are not equal
(steering wheel and rack are not centered),
correct the engagement of the joint/pinion shaft
splines.
 Set the steering column to the center tilt position, and to the center telescopic position, then check
the wheel alignment and adjust (see page 18-5).
 Make sure the steering wheel spokes are centered.
 Start the engine, and let it idle. Turn the steering wheel from lock-to-lock several times. Check that
the EPS indicator does not come on.
 Do the memorizing for the torque sensor neutral position (see page 17-22).
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17-84EPS Components
EPS Control Unit Removal/Installation
A
B
C D
F
E
6x1.0mm
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
1. Do the battery terminal disconnection procedure (see page 22-68).
2. Remove the passenger’s dashboard lower cover (see page 20-102).
3. Remove the passenger’s side kick panel (see page 20-66).
4. Disconnect EPS control unit connectors A (2P), connector B (2P), connector C (2P), and connector D
(28P).
5. Remove the nuts (E) from the EPS control unit (F).
6. Remove the EPS control unit. 7. Install the EPS control unit in the reverse order of
removal.
8. Do the battery terminal reconnection procedure (see page 22-68), and do these tasks:
 Make sure the horn and turn signal switches work properly.
 Make sure the steering wheel switches work properly.
 If the EPS control unit is replaced, the EPS control unit must memorize the torque sensor neutral
position (see page 17-22).
9. After installation, start the engine, and let it idle. Turn the steering wheel from lock-to-lock several
times. Check that the EPS indicator does not come
on.
08/08/21 14:55:30 61SNR030_170_0085
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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
20
0 20 4060
43 2 6 8 104 1 40
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)
2
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.
(cont’d)
2
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Problems That Are Not System Faults
How a Diagnostic Trouble Code (DTC) is Set How to Troubleshoot DTCs
18-50TPMS
General Troubleshooting Information (cont’d)
 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 t hough 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 t hough 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.
08/08/21 14:58:22 61SNR030_180_0050
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System Structure
Control unit
Indicators
18-58TPMS
System Description (cont’d)
Vehicle
Indicators (LED)
Gauge Control Module (Tach)
Communication
via F-CAN
Control Unit
(with radio
frequency antenna)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor) Wheel
(TPMS type)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Wheel
(TPMS type)
Wheel
(TPMS type) Wheel
(TPMS type)
Once the vehicle speed exceeds 45 km/h (28 mph), the TPMS control unit monitors all four tire pressure sensors and
the system function. If it detects low pressure in a tire, it alerts the driver by turning on the low tire pressure indicator.
If it detects a problem in the system, it turns on the TPMS indicator.
Mounted inside of the dash, the TPMS control unit receives wireless pressure sensor ID signals
every time the vehicle
speeds exceeds 45 km/h (28 mph). It also receives wireless signals from the transmitters for tire pressure and the
sensor condition, and it continuously monitors and controls the system. The TPMS control unit cannot directly
determine the position (location) of a tire pressure sensor(s) on the vehicle since it is a wireless system. TPMS sensor
locations will change during scheduled vehicle maintenance (tire rotation).
NOTE: To determine the actual location of each TPMS wheel sensor on the vehicle, do the tire pressure sensor
location procedure (see page 18-53). Once the tire pressure sensor locations are identified, write the sensor ID on the
side wall of the tire with a tire crayon to eliminate confusion.
Two indicators are in the gauge control module (tach): The low tire pressure indicator comes on when any tire
pressure is low, and the TPMS indicator that comes on only if there’s a problem with the system.
The low tire pressure indicator alerts the driver that a tire(s) pressure is low, but does not specify the tire(s) location.
08/08/21 14:58:24 61SNR030_180_0058
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Tire pressure sensor
Wheels
18-59
A
B
C
B
C
A B
C A
Each sensor is an integrated unit made up of the tire valve stem, a tire pressure sensor, and a transmitter. The unit is
attached to the inside of the wheel, around the valve stem. The sensor transmits the internal tire information to the
control unit once every 60 seconds when the vehicle speed exceeds 45 km/h (28 mph). When the TPMS control unit
receives a tire pressure signal that is less than 175 kPa (1.8 kgf/cm , 25 psi) with 16 inch wheels, or 183 kPa (1.9 kgf/cm ,
27 psi) with 17 inch wheels, the TPMS control unit then turns on the low tire pressure indicator. When that tire’s
pressure is increased to more than 200 kPa (2.0 kgf/cm , 29 psi) with 16 inch wheels, or 210 kPa (2.1 kgf/cm , 30 psi)
with 17 inch wheels, and the vehicle is driven above 45 km/h (28 mph) the transmitter sends the tire pressure signal to
the control unit, and then the control unit turns the indicator off.
NOTE: Do not mix the TPMS tire pressure sensors or wheels with other TPMS types. Be sure to use the correct type
sensors and wheels for this system.
Sensor are active:
 When the wheel rotates over 45 km/h (28 mph), the sensor detects the momentum, switches the sensor to the normal function mode.
 The LF (low frequency) signal of the TPMS tool makes the sensor active even t hough the vehicle is stopped. The tire
pressure sensor goes into sleep mode when the acceleration sensor detects the wheel is stationary for 5 minutes or
more continuously.
The TPMS will not work unless TPMS type wheels are installed on the vehicle. There are three different types of
wheels used. The original equipment wheels have a ‘‘TPMS’’ mark (A) on them and are counterweighted (B) the
opposite of the tire pressure sensor (C), and counterbalance the weight of the sensor.
(cont’d)
22
2 2
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DTC 32, 34, 36, 38:
YES
NO
DTC Tire Pressure Sensor Number YES
NO
YES
NO
18-66TPMS
DTC Troubleshooting (cont’d)
Tire Pressure Sensor
Transmission Failure
NOTE: Inspect for an aftermarket electrical device(s)
(such as an inverter, battery charger, etc) interfering
with the RF signal from the sensors when driving the
vehicle.
1. Turn the ignition switch to ON (II).
2. Make sure all four wheels are TPMS wheels with the mounted tire pressure sensors.
Go to step 3.
Install the TPMS wheel, and then memorize
the pressure sensor ID with the HDS (see page
18-52).
3. Turn the ignition switch to ON (II).
4. Check for DTCs with the HDS.
5. Note the tire pressure sensor(s) number by the indicated DTC.
32 No. 1
34 No. 2
36 No. 3
38 No. 4 6. Do the tire pressure sensor location procedure to
determine the affected tire location and relate it to
the tire pressure sensor number (see page 18-53).
Go to step 7.
Check for an aftermarket electrical device(s)
interfering with the RF signals from the sensors. If
there are no electrical devices causing interference,
replace the appropriate tire pressure sensor
(see page 18-76).
7. Turn the ignition switch to LOCK (0), and wait 5 minutes or more.
8. Test-drive the vehicle at 45 km/h (28 mph) or more for at least 1 minute.
9. Check the TIRE 1, TIRE 2, TIRE 3, or TIRE 4 PRESSURE SENSOR TRANSMITTER STATUS in
the TPMS DATA LIST with the HDS.
The system is OK at this time. Clear the DTC
with the HDS.
Replace the appropriate tire pressure sensor
(see page 18-76).
AreTPMStypewheelswithatirepressuresensor mount ed on t he v ehi cl e? Di d each t i r e pr essur e sensor r espond t o t he
T PM S t ool ?
I s N ORM AL i nd i cat ed f or al l f our t i r es w i t hi n onef ull turn of each tire?
08/08/21 14:58:59 61SNR030_180_0066
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DTC 41: DTC 51, 53, 55, 57:
YES
NO
YES
NO YES
NO
DTC Tire Pressure Sensor Number
18-6718-67
Abnormal Signal Reception Error Tire Pressure Sensor
Registration Error
NOTE:
 Inspect for an aftermarket electrical device(s) (such as an inverter, battery charger, etc) interfering with the
RF signal from the sensors when driving the vehicle.
 If DTC 32, 34, 36, or 38 is also set, troubleshoot those DTCs first.
1. Turn the ignition switch to LOCK (0).
2. Make sure all four wheels are TPMS wheels with the mounted tire pressure sensors.
Go to step 3.
Install the TPMS wheel, and then memorize
the pressure sensor ID with the HDS (see page
18-52).
3. Memorize the tire pressure sensor ID with the HDS (see page 18-52).
The system is OK at this time, clear the DTC
with the HDS.
Replace the TPMS control unit (see page
18-75). NOTE:
 These DTCs will only set during initialization with the HDS.
 Inspect for an aftermarket electrical device(s) (such as an inverter, battery charger, etc) interfering with the
RF signal from the sensors when driving the vehicle.
1. Turn the ignition switch to LOCK (0).
2. Make sure all four wheels are TPMS wheels with the mounted tire pressure sensors.
Go to step 3.
Install the TPMS wheel, and then memorize
the pressure sensor ID with the HDS (see page
18-52).
3. Turn the ignition switch to ON (II).
4. Check for DTCs with the HDS.
5. Note the tire pressure sensor(s) number by the indicated DTC.
51 No. 1
53 No. 2
55 No. 3
57 No. 4
(cont’d)
AreTPMStypewheelswithtirepressuresensorsmount ed on t he v ehi cl e?
Di d each t i r e pr essur e sensor r espond t o t heT PM S t ool ? AreTPMStypewheelswithatirepressuresensor
mount ed on t he v ehi cl e?
08/08/21 14:58:59 61SNR030_180_0067
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