Diagnosis Procedure

1. Turn the ignition switch OFF.
2. Disconnect low tire pressure warning control unit harness connector.
3. Check the voltage between the low tire pressure warning control unit harness connector and ground.

   Terminals			Voltage
   (+)		(-)
   Low tire pressure warning control unit		Ground
   Connector	Terminal
   M44	1	--	Battery voltage

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

1. Check the 5A fuse l(#99).
2. Disconnect fuse and fusible link block 2 harness connector.
3. Check the continuity between low tire pressure warning control unit harness connector and fuse and fusible link block 2 harness connector.

   Low tire pressure warning control unit		Fuse and fusible link block 2		Continuity
   Connector	Terminal	Connector	Terminal
   M44	1	M131	59	Existed

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

   Low tire pressure warning control unit		Ground	Continuity
   Connector	Terminal
   M44	1	--	Not existed

Is the inspection result normal?

YES

Perform trouble diagnosis for battery power supply. Refer to Wiring Diagram - BATTERY POWER SUPPLY - .

NO

Repair or replace error-detected parts.

Check the continuity between 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.

1. Check the low tire pressure warning control unit pin terminals for damage or loose connection with harness connector.
2. Check the fuse and fusible link block 2 pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

INSPECTION END

NO

Repair or replace error-detected parts.