Diagnosis By Symptom

SYMPTOM TROUBLESHOOTING

TIRE PRESSURE MONITORING SYSTEM (TPMS) WIRING DIAGRAM

With-advanced keyless system or keyless entry system:

Without advanced keyless system and keyless entry system:

FOREWORD
^ Before performing the steps in Symptom Troubleshooting, perform the On-board Diagnostic Inspection. To check the DTC, follow the DTC Inspection steps.

PRECAUTION
Intermittent Concern Troubleshooting
Vibration method
If malfunction occurs or becomes worse while driving on a rough road or when the engine is vibrating, perform the steps below.

Note:
^ There are several reasons why vehicle or engine vibration could cause an electrical malfunction. Some of the things to check for are:
- Connectors not fully seated.
- Wire harnesses not having full play.
- Wires laying across brackets or moving parts.
- Wires routed too close to hot parts.
^ An improperly routed, improperly clamped, or loose harness can cause wiring to become pinched between parts.
^ The connector joints, points of vibration, and places where wire harnesses pass through the firewall, body panels and other panels are the major areas to be checked.

Inspection method for switch and/or sensor connectors or wires
1. Connect WAS or equivalent to DLC-2
2. Turn the ignition switch to the ON position (engine off).

Note: If engine starts and runs, perform the following steps at idle.





3. Access PIDs for the switch you are inspecting.
4. Turn switch on manually.
5. Shake each connector or wire harness a bit vertically and horizontally while monitoring the PID.
^ If PID value is unstable, check for poor connection.

Inspection method for sensors
1. Connect WAS or equivalent to DLC-2
2. Turn the ignition switch to the ON position (engine off).

Note: If engine starts and runs, perform the following steps at idle.

3. Access PIDs for the switch you are inspecting.
4. Vibrate the sensor slightly with your finger.
^ If PID value is unstable or malfunction occurs, check for poor connection and/or poorly mounted sensor.

Connector terminal check method





1. Check the connection condition of each female terminal.
2. Insert male terminal; fit the female terminal side to female terminal and check to see whether the malfunction is in the female terminal or not.

SYMPTOM TROUBLESHOOTING:

NO.1 TPMS WARNING LIGHT ILLUMINATES CONTINUOUSLY

Caution:
^ The tire pressure cannot be measured accurately after driving for a long period due to the internal temperature and pressure. Stop the vehicle for approximately 1 hour and then perform the tire pressure measurement and adjustment.
^ Use a high accuracy digital gauge for measurement of the tire pressure.

Note: If the DTC clearing procedure is implement, the TPMS warning light turns off.








NO.2 TPMS WARNING LIGHT (LOW PRESSURE WARNING) ILLUMINATES AFTER ENGINE START AND TURNS OFF AFTER DRIVING FOR PERIOD OF TIME

Caution:
^ The tire pressure cannot be measured accurately after driving for a long period due to increased internal temperature and pressure. Stop the vehicle for approximately 1 hour and then perform the tire pressure measurement and adjustment.
^ use a high accuracy digital gauge for measurement of the tire pressure.

Note:
^ The tire pressure decreases spontaneously by approximately 7 kPa (0.07 kegs/cm, 1.02 psi) per month even if the tire is normal.
^ The FFD (temperature and pressure) stored when the TPMS warning light is turned on or off can be verified by operating the WAS or equivalent.








NO.3 FLAT TIRE WARNING LIGHT (FLAT TIRE WARNING) ILLUMINATES
Note:
^ When the DTC clear command of the WAS or equivalent is operated, the flat tire warning light can be turned off.
^ The FFD (temperature and pressure) stored when the flat tire warning light is turned on or off can be verified by operating the WAS or equivalent.








NO.4 WHEEL UNIT ID REGISTRATION CANNOT BE PERFORMED (TPMS WARNING LIGHT FLASHES)

Caution: Active the wheel unit ID registration mode using the WAS or equivalent, and perform the following steps if the TPMS warning light does not turn off after driving at 25 km/ha (115.5 mph) or more for 10 min or more.








Display Of WAS (Example)
Registered ID: OxAAAAAAAA, OxBBBBBBBB, 0xCCCCCCCC, and 0xDDDDDDDD (AAAAAAAA, BBBBBBBB, CCCCCCCC, and DDDDDDDD mean arbitrary numbers.)
Unregistered ID: 0x0000000
Tire pressure: aaa kPa, bbb kPa, ccc kPa, ddd kPa (aaa, bbb, ccc, and ddd mean measurement value.)
^ The battery is removed, the stored tire pressure is reset to 0 kPa.

Three registered wheel units and a replaced wheel unit When a replaced wheel unit malfunctions:

When a registered wheel unit malfunctions:

When two registered wheel unit malfunction:

When a replaced wheel unit and a registered wheel unit malfunction:

When a replaced wheel unit and two registered wheel units malfunctions:

When three registered wheel units malfunction:

Two registered wheel units and two replaced wheel units When aa replaced wheel unit malfunctions:

When a registered wheel unit malfunctions:

When two replaced wheel units malfunction:

When two registered wheel units malfunction:

When a replaced wheel unit and a registered wheel unit malfunction:

When two replaced wheel units and a registered wheel unit malfunction:

When a replaced wheel unit and two registered wheel units malfunction:

A registered wheel unit and three replaced wheel units When a registered wheel unit malfunctions:

When a replaced wheel unit malfunctions:

When a replaced wheel unit and a registered wheel unit malfunction:

When two replaced wheel units malfunction:

When two replaced wheel units and a registered wheel unit malfunction:

When three replaced wheel units malfunction: