The engine start function, door lock function, power distribution system and NATS-NVIS system are closely
related to each other regarding control. Narrow down the functional area in question by performing basic
inspection to identify which function is malfunctioning. The vehicle security function can operate only when the
door lock and power distribution system are operating normally. Therefore, it is easy to identify any factor
unique to the vehicle security system by performing the vehicle security operation check after basic inspection.

CHECK DOOR LOCK OPERATION

Check the door lock for normal operation with the keyfob or Intelligent Key (if equipped) and door request
switch.
Successful door lock operation with the keyfob or Intelligent Key (if equipped) and request SW indicates
that the remote keyless entry receiver and inside key antenna (with Intelligent Key) required for engine
start are functioning normally.
Identify the malfunctioning point by referring to the DLK section if the door cannot be unlocked.

Can the door be locked with the Intelligent Key and door request switch?

YES

>> GO TO 2

>> Refer to

DLK-191, "DOOR LOCK AND UNLOCK SWITCH : Symptom Table"

(with Intelligent Key

without super lock),

DLK-420, "DOOR LOCK AND UNLOCK SWITCH : Symptom Table"

(with

Intelligent Key and super lock),

DLK-567, "DOOR LOCK AND UNLOCK SWITCH : Symptom

Table"

(without Intelligent Key without super lock) or

DLK-718, "DOOR LOCK AND UNLOCK

SWITCH : Symptom Table"

(without Intelligent Key with super lock).

CHECK ENGINE STARTING

Checks that the engine starts.

Does the engine start?

YES

>> GO TO 3

>> Refer to

SEC-76, "Symptom Table"

(with Intelligent Key) or

SEC-117, "Symptom Table"

(without

Intelligent Key).

CHECK STEERING LOCKING (MODELS WITH INTELLIGENT KEY)

Does the steering lock when operating door switch after switching the power supply from ON position (or
ACC position) to LOCK position?
If door switch is malfunctioning, BCM cannot lock the steering. If BCM does not detect DTC, steering lock
unit is normal.

Does steering lock?

YES

>> GO TO 4

>> Refer to

STC-29, "Symptom Chart"

CHECK VEHICLE SECURITY SYSTEM

Check the vehicle security system for normal operation.
The vehicle security function can operate only when the door lock and power distribution functions are
operating normally.
Therefore, it is easy to identify any factor unique to the vehicle security by performing the vehicle security
operation check after this basic inspection.

>> Refer to

SEC-75, "Symptom Table"

(with Intelligent Key) or

SEC-116, "Symptom Table"

(without

Intelligent Key).

PCS

BCM (BODY CONTROL MODULE)

PCS-41

< ON-VEHICLE REPAIR >

[POWER DISTRIBUTION SYSTEM]