Honda Element. Manual — part 775

SYSTEM DESCRIPTION

TPMS CONTROL UNIT INPUTS AND OUTPUTS FOR CONNECTOR A (14P)

Fig. 11: Identifying TPMS Control Unit Inputs And Outputs Connector Terminals (14P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

VOLTAGE SPECIFICATION

TPMS CONTROL UNIT INPUTS AND OUTPUTS FOR CONNECTOR B (20P)

Fig. 12: Identifying TPMS Control Unit Inputs And Outputs Connector Terminals (20P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

VOLTAGE SPECIFICATION

TPMS indicator does not come
on, and no DTCs are stored

Symptom Troubleshooting (see TPMS INDICATOR DOES
NOT COME ON, AND NO DTCS ARE STORED )

TPMS indicator does not go
off, and no DTCs are stored

Symptom Troubleshooting (see TPMS INDICATOR DOES
NOT GO OFF, AND NO DTCS ARE STORED )

Terminal

number

Wire
color

Terminal sign

(Terminal name)

Description

Signal

Terminal

Conditions

Voltage

1

RED/BLU

+B (Battery
positive)

Power source for the
TPMS control unit

1-GND At all times

Battery
voltage

3

BLK

GND (Ground)

Ground for the TPMS
control unit

3-GND At all times

Less than
0.1V

5

YEL

IG1 (Ignition 1)

Power source for
activating the system

5-GND

Ignition switch
ON (II)

Battery
voltage

Ignition switch

OFF

Less than
0.1V

Terminal

number

Wire
color

Terminal sign

(Terminal name)

Description

Signal

Terminal

Conditions

Voltage

2007 Honda Element EX

2007-2008 SUSPENSION TPMS (Tire Pressure Monitoring System) - Element

SYSTEM STRUCTURE

Once the vehicle speed exceeds 28 mph (45 km/h), the TPMS control unit monitors all four tires and the
system. 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.

Control unit

Mounted inside of the dash, the TPMS control unit receives pressure sensor ID signals every time the vehicle
speeds exceeds 28 mph (45 km/h). It also receives signals from the transmitters for tire pressure and the sensor
condition, and it continuously monitors and controls the system.

Indicators

Two indicators are in the gauge control module: 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.

9

LT

BLU

K-LINE (Data link
connector)

Communications with
HDS

-

-

-

10

RED

CANL (CAN
communication signal
low)

Sends the
communication signal

-

Ignition switch
ON (II)

Pulses

19

WHT

CANH (CAN
communication signal
high)

Sends the
communication signal

-

Ignition switch
ON (II)

Pulses

2007 Honda Element EX

2007-2008 SUSPENSION TPMS (Tire Pressure Monitoring System) - Element

Fig. 13: TPMS System Structure Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Tire pressure sensor

Each sensor is an integrated unit made up of the tire valve stem, a 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 28 mph (45 km/h). When the TPMS
control unit receives a tire pressure signal that is less than: Except SC model 190 kPa (1.9 kgf/cm

2

,28 psi), SC

model 175 kPa (1.8 kgf/cm

2

, 25 psi), the control unit then turns on the low tire pressure indicator. When that

tire's pressure is increased to more than: Except SC model 210 kPa (2.1 kgf/cm

2

,30 psi), SC model 200 kPa

(2.0 kgf/cm

2

,29 psi), and the vehicle is driven above 28 mph (45 km/h) the transmitter sends the tire pressure

signal to the control unit, and then the control unit turns the indicator off.

Do not mix the tire pressure sensor with another TPMS type.

Sensor active:



When the wheel rotates over 28 mph (45 km/h), the sensor detects the momentum, switches the sensor to
the normal function mode.



The LF (low frequency) signal of the TPMS initializer 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.

2007 Honda Element EX

2007-2008 SUSPENSION TPMS (Tire Pressure Monitoring System) - Element

Wheels

TPMS will not work unless TPMS type wheels are installed on the vehicle. There are three different type
wheels used. The original equipment wheels have a "TPMS" mark (A) on them and counterweights (B) cast into
the opposite side of the spoke to counter balance the weight of the tire pressure sensor (C).

Fig. 14: Sectional View Of Wheels
Courtesy of AMERICAN HONDA MOTOR CO., INC.

SYSTEM COMMUNICATION



When the vehicle is traveling more than 28 mph (45 km/h), an RF (radio frequency) band wave signal is
continuously transmitted from each tire pressure sensor to the control unit.



When the wheels rotate; and the tire pressure sensors momentum is detected, switching them from sleep
mode to normal function mode. After the vehicle is stationary for 5 minutes, the sensors switch from
normal function mode back to sleep mode to extend their battery life.



Each tire pressure sensor has its own ID to prevent jamming by similar systems on other vehicles. After
memorizing all the sensor IDs, the control unit receives only those specific signals.



An ID cannot be memorized automatically. The control unit knows which ID belongs to each tire
pressure sensor. This recurring ID confirmation prevents any confusion in the system as a result of
normal tire rotation.

NOTE:

Be careful not to bend the brackets on the TPMS control unit: Misalignment of

2007 Honda Element EX

2007-2008 SUSPENSION TPMS (Tire Pressure Monitoring System) - Element