C1728 RECEIVER ID

C1728

Description
DTC Logic
Diagnosis Procedure

Description

The front (A) tire pressure receiver (1) and rear (B) tire pressure receiver (2) receive the tire pressure signal by radio waves from the transmitter at each wheel, and transmit the tire pressure signal to the low tire pressure warning control unit.

DTC Logic

DTC DETECTION LOGIC

DTC	Display Item	Malfunction detected condition	Possible causes
C1728	RECEIVER ID NO REG	Receiver ID registration cannot be performed.	Tire pressure receiver malfunction Low tire pressure warning control unit malfunction

DTC REPRODUCTION PROCEDURE

1.DTC REPRODUCTION PROCEDURE

Diagnosis Procedure

1.CHECK RECEIVER INPUT SIGNAL

Turn the ignition switch ON.
■ CAUTION ■
Never start the engine.
Use an oscilloscope and check the input signal waveform between the low tire pressure warning control unit harness connector terminals and the ground.

Connector	Terminal	—	Condition	Standard
M14	22	Ground	Standby stats
	21
	20
	19

Connector	Terminal	—	Condition	Standard
M14	22	Ground	When transmitter signal is received
	21
	20
	19

Is the inspection result normal?

YES>>INSPECTION END

NO>>GO TO 2.

2.CHECK TIRE PRESSURE RECEIVER POWER SUPPLY CIRCUIT

3.CHECK TIRE PRESSURE RECEIVER GROUND CIRCUIT

4.CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT CIRCUIT

Tire pressure receiver		—	Voltage
Connector	Terminal
E16 (Front LH)	1	Ground	7 - 16 V
E44 (Front RH)
B58 (Rear LH)
B246 (Rear RH)

Low tire pressure warning control unit		Tire pressure receiver		Continuity
Connector	Terminal	Connector	Terminal
M14	26	E16 (Front LH)	4	Existed
	25	E44 (Front RH)
	24	B58 (Rear LH)
	23	B246 (Rear RH)