The TPMS display device
is located on the instrument cluster to provide information about TPMS
operating conditions and tire pressure. The TPMS display device is consist
of TREAD indicator lamp and TPMS Warning indicator lamp. The TREAD
indicator lamp is turned on when pressure of one or more tires are below
the warning limit level. The TPMS Warning indicator lamp is turned on if
there is the failure in the system.
This DTC indicates that
the TPMS lamp control circuit short to battery when lamp is on. TPMS lamp
control circuit short to ground or open when lamp is off.
Item
|
Detecting
Condition
|
Possible cause
|
DTC strategy
|
| •
|
Check Input TPMS lamp
current | |
| •
|
Short to battery / ground between TPMS
lamp and TPMS receiver |
| •
|
Open between TPMS lamp and TPMS
receiver | |
Enable conditions
|
|
Threshold
value
|
case1
|
| •
|
TPMS lamp control circuit Short to
battery | |
case2
|
| •
|
TPMS lamp control circuit Short to
ground | |
case3
|
| •
|
TPMS lamp control circuit
Open | |
Diagnosis time
|
| •
|
Within 3 sec. after IGN
ON | |
| 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
"Control Circuit Inspection"
procedure.
|
|
| Control Circuit
Inspection |
【Chcek Short to battery】
| 2. |
Disconnect instrument cluster connector and
TPMS receiver connector. |
| 4. |
Measure voltage between TPMS check lamp
control terminal of TPMS receiver harness connector and chassis
ground.
Specification
: Approx. 0 V
| |
| 5. |
Is the measured voltage within
specifications?
|
|
▶ 'Check
Short to ground' as follows.
|
|
|
▶ Repair
short to power in TPMS check lamp control circuit between
instrument cluster harness connector and TPMS receiver harness
connector and then go to "Verification of Vehicle Repair"
procedure.
|
|
【Check Short to ground】
| 2. |
Disconnect instrument cluster connector and
TPMS receiver connector. |
| 3. |
Measure resistance between TPMS check lamp
control terminal of TPMS receiver harness connector and chassis
ground.
|
| 4. |
Is the measured resistance within
specifications?
|
|
▶ 'Check
Open' as follows.
|
|
|
▶ Repair
short to ground in TPMS check lamp control circuit between
instrument cluster harness connector and TPMS receiver harness
connector and then go to "Verification of Vehicle Repair"
procedure.
|
|
【Check Open】
| 2. |
Disconnect instrument cluster connector and
TPMS receiver connector. |
| 3. |
Measure resistance between TPMS check lamp
control terminal of TPMS receiver harness connector and TPMS check
lamp control terminal of instrument cluster harness
connector.
Specification
: Approx. 0 Ω
| |
| 4. |
Is the resistance measured 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.
|
|
|
▶ Repair
open in TPMS check lamp control circuit between instrument
cluster harness connector and TPMS receiver harness connector
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.
|
|
