Diagnosis Procedure

Check NATS antenna amp. Installation. Refer to , "REMOVAL AND INSTALLATION ".

Is the inspection result normal? 

YES: GO TO 2.

NO: Reinstall NATS antenna amp. correctly.

Start engine using another registered ignition key.

Does the engine start? 

YES-1: Replace ignition key.

YES-2: Perform initialization of BCM and registration of all ignition keys using CONSULT-III. For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.

NO: GO TO 3.

1. Turn ignition switch OFF.
2. Check that the following IPDM E/R fuse is not blown.
   IPDM E/R FUSE CHART
   
   

   Signal name	Fuse No.
   Battery power supply	43 (20 A)

   Is the fuse fusing? 

   YES: Replace the blown fuse after repairing the cause of blowing.

   NO: GO TO 4.

1. Disconnect NATS antenna amp. connector.
2. Check voltage between NATS antenna amp. harness connector and ground.
   CONNECTOR TERMINALS VOLTAGE REFERENCE CHART
   
   

   (+)		(-)	Voltage (V)
   NATS antenna amp.
   Connector	Terminal
   M26	1	Ground	6 - 16

   Is the inspection result normal? 

   YES: GO TO  6.

   NO: GO TO 5.

1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector and NATS antenna amp. connector.
   CONNECTOR TERMINALS CONTINUITY REFERENCE CHART
   
   

   IPDM E/R		NATS antenna amp.		Continuity
   Connector	Terminal	Connector	Terminal
   E14	42	M26	1	Existed

   Is the inspection result normal? 

   YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

   NO: Repair or replace harness.

Check continuity between NATS antenna amp. harness connector and ground.

Is the inspection result normal? 

YES: GO TO 7.

NO: Repair or replace harness.

1. Connect BCM connector and NATS antenna amp. connector.
2. Check voltage between BCM harness connector and ground.
   CONNECTOR TERMINALS VOLTAGE REFERENCE CHART
   
   

   (+)		(-)	Condition	Voltage (V) (Approx.)
   BCM
   Connector	Terminal
   M65	21	Ground	Just after inserting ignition key into key cylinder	Pointer of tester should move
   			Other than above	0
   	25		Just after inserting ignition key into key cylinder	Pointer of tester should move
   			Other than above	0

   Is the inspection result normal? 

   YES: GO TO  9.

   NO: GO TO 8.

1. Disconnect NATS antenna amp. connector.
2. Check continuity between BCM harness connector and NATS antenna amp. harness connector.
   CONNECTOR TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		NATS antenna amp.		Continuity
   Connector	Terminal	Connector	Terminal
   M6	21	M26	2	Existed
   	25		4

3. Check continuity between BCM harness connector and ground.
   CONNECTOR TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		Ground	Continuity
   Connector	Terminal
   M65	21		Not existed
   	25

   Is the inspection result normal? 

   YES: Replace NATS antenna amp. Refer to , "REMOVAL AND INSTALLATION ".

   NO: Repair or replace harness.

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END