DTC Diagnosis Procedure
- CHECK NATS ANTENNA AMP. INSTALLATION
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.
- CHECK NVIS (NATS) IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.
Does the engine start?
YES
- Ignition key ID chip is malfunctioning.
- Replace the ignition key.
- Perform initialization with CONSULT.
For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.
NO
GO TO 3
- CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
- Turn ignition switch ON.
- Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
1 - Ground
: Battery voltage
Is the inspection result normal?
YES
GO TO 4
NO
Repair or replace fuse or harness.
- CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
- Turn ignition switch OFF.
- Disconnect NATS antenna amp. connector.
- Check continuity between NATS antenna amp. connector M21 terminal 3 and ground.
3 - Ground
: Continuity should exist.
Is the inspection result normal?
YES
GO TO 5
NO
Repair or replace harness.
- CHECK NATS ANTENNA AMP. SIGNAL LINE- 1
- Connect NATS antenna amp. connector.
- Turn ignition switch ON.
- Check voltage between NATS antenna amp. connector M21 terminal 2 and ground with analog tester.
Terminals
Position of ignition key cylinder
Voltage (V)
(Approx.)
(+)
(-)
2
Ground
Before inserting ignition key
Battery voltage
After inserting ignition key
Pointer of tester should move for approx. 30 seconds, then return to battery voltage
Just after turning ignition switch ON
Pointer of tester should move for approx. 1 second, then return to battery voltage
Is the inspection result normal?
YES
GO TO 6
NO
Repair or replace harness.
- CHECK NATS ANTENNA AMP. SIGNAL LINE- 2
Check voltage between NATS antenna amp. connector M21 terminal 4 and ground with analog tester.
Terminals
Position of ignition key cylinder
Voltage (V)
(Approx.)
(+)
(-)
4
Ground
Before inserting ignition key
Battery voltage
After inserting ignition key
Pointer of tester should move for approx. 30 seconds, then return to battery voltage
Just after turning ignition switch ON
Pointer of tester should move for approx. 1 second, then return to battery voltage
Is the inspection result normal?
YES
NATS antenna amp. is malfunctioning.
NO
Repair or replace harness. If harness is OK, replace BCM, refer to Removal and Installation . Perform initialization with CONSULT. For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.