TPMS Receiver
TPM Receiver is
integrated with the TPM module installed in the center console (behind the
audio). The operating battery of TPM module is supplied from the vehicle
battery.
The LOW-LINE TPMS
Receiver unit’s MCU and RF receiver circuits are active while the
vehicle’s ignition circuit is energized. It continuously monitors for RF
broadcasts from nearby WE units.
The TPMS Receiver unit
has nonvolatile memory in which the ID codes of the WE units fitted to
that particular vehicle are stored. When the TPMS Receiver unit receives
an information broadcast, it checks to see if the ID code contained within
that broadcast matches one of the ID codes stored within its nonvolatile
memory. If this is the case, the TPMS Receiver applies the information
contained within that broadcast to the TPMS Warning Algorithm.
This algorithm evaluates
the pressure and temperature of each tire for changes over time, and is
responsible for making the decision to alert the driver to a potentially
dangerous tire inflation condition via a visible ‘TREAD’ indicator.In
addition to processing data from the WE units, the TPMS Receiver is also
capable of self-diagnosis of its circuitry and operating condition.
This DTC indicates that
the Vehicle/receiver battery level is High.
Item
|
Detecting
Condition
|
Possible cause
|
DTC
strategy
|
| •
|
Check vehicle battery
voltage | |
|
Enable
conditions
|
|
Threshold
value
|
| •
|
Battery voltage > 17.5
V |
| •
|
Consecutive over 2
sec. | |
Diagnosis
time
|
| •
|
Within 3 sec. after IGN
ON | |
| 1. |
Start engine and turn headight and rear
defroster on. |
| 2. |
Connect 'TPMS exciter' or scantool to Data
Link Connector(DLC). |
| 3. |
Select "TPMS DIAGNOSIS"
mode. |
| 4. |
Select the "FULL" mode of "CURRENT DATA"
function. |
| 5. |
Maintaining ENG. RPM at 2,500RPM(idle) over 2
minutes. |
| 6. |
Monitor the parameter of BATT. VOLT on the
'TPMS exciter' or scantool.
Specification
: 'BATT. VOLT' is less than 16.5
V
| |
| 7. |
Is parameter within
specifications?
|
|
▶ Fault is
intermittent. It has been repaired and TPMS receiver module
memory is not cleared yet.
▶ Go to
"Verification of vehicle Repair" procedure.
|
|
|
▶ Go to
"Inspection/Repair"
procedure.
|
|
| Terminal and Connector
Inspection |
| 1. |
Many malfunctions in the electrical system are
caused by poor harness and terminal condition. Faults can also be
caused by interference from other electrical systems, and mechanical
or chemical damage. |
| 2. |
Thoroughly check all connectors (and
connections) for looseness, bending, corrosion, contamination,
deterioration, and/or damage. |
| 3. |
Has a problem been found?
|
|
▶ Repair if
necessary and then go to "Verification of Vehicle Repair"
procedure.
|
|
|
▶ Go to
"Charging System Inspection"
procedure.
|
|
| Charging System
Inspection |
| 2. |
headight and rear defroster
"ON". |
| 3. |
Measure voltage between terminal (+) and (-)
of battery maintaining ENG. RPM at 2,500RPM(idle) over 2
minutes.
Specification
: less than 16.5 V
| |
| 4. |
Is the measured voltage within
specifications?
|
|
▶
Substitute with a known-good TPMS receiver and check for
proper operation.
▶ If the problem
is corrected, replace TPMS receiver and then go to
"Verification of Vehicle Repair" procedure.
|
|
|
▶ Check for
fault in charging system and thoroughly check all connectors
(and connections) for looseness, bending, corrosion,
contamination, deterioration, and/or damage. Repair or replace
if necessary and then go to "Verification of Vehicle Repair"
procedure.
|
|
| Verification of Vehicle
Repair |
After a repair, it is
essential to verify that the fault has been corrected.
| 1. |
Connect TPMS exciter or scantool and select
"Diagnostic Trouble Codes(DTCs)"
mode |
| 2. |
Using a TPMS exciter or scantool, Clear
DTC. |
| 3. |
Operate the vehicle within DTC Enable
conditions in General information. |
| 4. |
Are any DTCs present ?
|
|
▶ Go to the
applicable troubleshooting procedure.
|
|
|
▶ System
performing to specification at this
time.
|
|
