Acura CSX. Manual — part 368
SNR9A0JB54175100000HBAT00
Symptom
Diagnostic procedure
Also check for
18-56
TPMS
Symptom Troubleshooting Index
HDS does not communicate with the
TPMS control unit or the vehicle
Troubleshooting the DLC circuit (see page
11-204)
Low tire pressure indicator does not come
on, and no DTCs are stored
Symptom Troubleshooting (see page 18-71)
Low tire pressure indicator does not go off,
and no DTCs are stored
Symptom Troubleshooting (see page 18-72)
TPMS indicator does not come on, and no
DTCs are stored
Symptom Troubleshooting (see page 18-73)
TPMS indicator does not go off, and no
DTCs are stored
Symptom Troubleshooting (see page 18-73)
08/08/21 14:58:24 61SNR030_180_0056
―――
+
01
SNR9A0JB54175100000CAAT00
TPMS Control Unit Inputs and Outputs for 20P Connector
Terminal
number
Wire color
Terminal sign
Description
Signal
18-57
System Description
NOTE: Standard battery voltage is about 12 V.
2
WHT
CAN H (F-CAN
communication
signal high)
F-CAN
communication
circuit
Ignition switch ON (II): pulses
3
BLK
GND (Ground)
Ground for the
TPMS control unit
Less than 0.1 V at all times
7
LT BLU
K-LINE (Data link
connector)
Communications
with the HDS
8
BRN
IG1 (Ignition
switch 1)
Power source for
activating the
system
Ignition switch ON (II): battery voltage
Ignition switch in LOCK (0): less than 0.1 V
10
BLU
B (Battery
positive)
Power source for
the TPMS control
unit
Battery voltage at all times
11
RED
CAN L (F-CAN
communication
signal low)
F-CAN
communication
circuit
Ignition switch ON (II): pulses
Wire side of female terminals
08/08/21 14:58:24 61SNR030_180_0057
*01
System Structure
Control unit
Indicators
18-58
TPMS
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
03
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 though 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.
2
2
2
2
08/08/21 14:58:25 61SNR030_180_0059
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст