C1754

C1754 LOW TIRE PRESSURE WARNING CONTROL UNIT





Description





- After the low tire pressure warning control unit (1) receives the tire pressure signal from the tire pressure receiver, it controls the operation of the low tire pressure warning lamp and buzzer.
- Performs self-diagnosis of the Tire Pressure Monitoring System
(TPMS).




DTC Logic

DTC logic

DTC Detection Logic:

DTC REPRODUCTION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Drive for several minutes at a speed of 40 km/h (25 MPH) or more, then stop the vehicle.
2. Stop the vehicle and perform self-diagnosis of the low tire pressure warning control unit.
Is DTC "C1754" detected?
YES - Perform trouble diagnosis. Refer to C1754.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK POWER VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the low tire pressure warning control unit harness connector.
3. Check the voltage between the harness connectors of the low tire pressure warning control unit and the ground.





Is the inspection result normal?
YES - GO TO 2.
NO - If the results of any of the following check items are not normal, repair or replace the malfunctioning part.
- 10 A fuse [No. 3 in fuse block (J/B)]
- Harness open circuit or short circuit between the ignition switch and harness connector terminal
15 of the low tire pressure warning control unit.
- Check battery voltage.
2.CHECK GROUND CIRCUIT
Check the continuity between the low tire pressure warning control unit harness connector and ground.





Are the check results normal?
YES - GO TO 3.
NO - If an open circuit or other damage is detected, malfunctioning part.
3.CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT AND TIRE PRESSURE RECEIVER CIRCUIT
1. Check the continuity between the low tire pressure warning control unit harness connector and tire pressure receiver harness connector.





2. Check the continuity between the low tire pressure warning control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace error-detected parts.
4.PERFORM THE SELF-DIAGNOSIS
With CONSULT-III
1. Perform transmitter ID registration for all wheels. Refer to Transmitter ID Registration Procedure.
2. Perform self-diagnosis of the low tire pressure warning control unit.
Is DTC "C1754" detected?
YES - Replace the low tire pressure warning control unit.
NO - Check for looseness or damage at the harness connector pins of the low tire pressure warning control unit. Repair or replace if necessary.




Special Repair Requirement
1.CHECK TIRE PRESSURE
Check the tire pressure of all wheels. Refer to [1][2]Pressure, Vacuum and Temperature Specifications.
Does the tire pressure match the specified value?
YES - GO TO 2.
NO - Check the road wheels and tires. Adjust the tire pressures to the specified values.
2.REGISTER TRANSMITTER ID
Perform transmitter ID registration. Refer to Transmitter ID Registration Procedure.
- END