System Description
When the vehicle has reached a speed of 40 km/h (25 MPH) or greater, the BCM receives a signal transmitted from the tire pressure sensors installed in each wheel. If the BCM detects low inflation pressure or a system malfunction, it sends a signal to the combination meter via CAN communication to illuminate the low tire pressure warning lamp.In addition, a warning message will be displayed in the vehicle information display. Refer to the Owner’s Manual for additional information.
The tire pressure monitoring system (TPMS) has Easy fill tire alert function to aid in tire inflation. Refer to WT- 9, "Easy Fill Tire Alert Function".
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL
Major signal transmission between each unit via communication lines is shown in the following table.
Component parts |
Signal item |
Combination meter | Mainly receives the following signals from BCM via CAN
communication.
|
ABS actuator and electric unit (control unit) | Mainly transmits the following signals to BCM via CAN communication.
|
TCM | Mainly transmits the following signals to BCM via CAN communication.
|
IPDM E/R | Mainly transmits the following signals to BCM via CAN communication.
|
LOW TIRE PRESSURE WARNING LAMP INDICATION CONDITION
Uses CAN communication from the BCM to illuminate the low tire pressure warning lamp on the combination meter.
Condition | Low tire pressure warning lamp |
Power switch OFF |
OFF |
Power switch ON (System normal) | Warning lamp turns on for 1second, then turns off. |
Low tire pressure | ON |
Configuration not performed in tire pressure monitoring system | |
Tire pressure sensor ID not registered in BCM | |
Tire pressure monitoring system malfunction (Other diagnostic item) | Warning lamp blinks 1 min, then turns on. |
HAZARD WARNING LAMP INDICATION CONDITION
The hazard warning lamp blinks under the following conditions.
HORN CONTROL CONDITION
During the use of easy fill tire alert function.
Easy Fill Tire Alert Function
NOTE: The easy fill tire alert function is recommended to use with the power switch ON.
NOTE: When beginning tire inflation, it takes a few seconds for the Easy fill tire alert to function. If there is no response for approximately 15 seconds or more, cancel the Easy fill tire alert function and move the vehicle approximately 1 m (3.2 ft) backward or forward to try again.
S connector circuit
Description
The starter motor magnetic switch is supplied with power when the ignition
switch is turned to the START position
while the selector lever is in the P (Park) or N (Neutral) position.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to STR-7, "Wiring Diagram" ...
P0137 HO2S2
DTC Description
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time
between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen
storage capacity of the three way catalyst (manifold) causes the
longer switching time. To judge the malfunctions of heated ox ...
Diagnosis system (combination meter)
Description
COMBINATION METER SELF-DIAGNOSIS MODE
The following meter functions can be checked during Combination Meter
Self-Diagnosis Mode:
Pointer sweep of speedometer, tachometer and gauges.
Illumination of all LCD segments and color patterns for meter
displays.
I ...