Keyless Access System Check
1.

2.
Turn the vehicle to the ON mode.

3.
On the HDS screen, at SYSTEM SELECTION MENU, enter ONE-PUSH START, then select KEYLESS ACCESS CONTROL UNIT or BACKUP CONTROL UNIT.

NOTE: If the HDS does not communicate, check the keyless access control unit power, ground, K LINE and L-LINE connectors.

4.
At KEYLESS ACCESS CONTROL UNIT, enter KEYLESS ACCESS SYSTEM INFORMATION, then select SYSTEM CHECK 1 or SYSTEM CHECK 2.

5.
At BACKUP CONTROL UNIT, enter SYSTEM INFORMATION, then select SYSTEM CHECK.

6.
If the HDS displays NORMAL N-1, the immobilizer system is OK at this time, refer to the STATUS LOG. If the HDS displays any other messages, check as follows:

System Check 1 (Keyless Access Control Unit)
System Check No.
Possible cause
Check items
A-1
A-2
A-3
G-4
Keyless remote is mismatched
LF interior antenna failure
Keyless remote is not registered
Keyless remote test
LF interior antenna test
Register the keyless remote
B-1
B-2
G-1
PCM is replaced
No communication between keyless access control unit and PCM
Open in the IG1 line
Keyless access control unit is replaced
Register the PCM
Check PCM
Check harness
Register the keyless access control unit
C-1
C-2
G-2
G-3
MICU (Imoes unit) is replaced
Communication error between keyless access control unit and MICU
Open in the IG1 line
Keyless access control unit is replaced
Register the keyless access control unit
Check MICU
Check harness
C-3
C-4
Power control unit is replaced
Electric steering lock is replaced*
Keyless access control unit is replaced
Register the keyless access control unit
Register the electric steering lock*
Check for an open or short in the wire IGN TRX lines*
G-5
Electric steering lock is replaced*
Keyless access control unit is replaced
Register the keyless access control unit
Register the electric steering lock*
Check for an open or short in the wire IGN TRX lines*

*: With electric steering lock

System Check 2 (Keyless Access Control Unit)
System Check No.
Possible cause
Check items
D-1
D-2
D-3
S-NET line is short
No communication between keyless access control unit and MICU (Imoes unit)
No communication between keyless access control unit and PCM
Check harness
Check MICU
Check PCM
D-4
D-5
IGN TRX line trouble*
Check IGN TRX line*

*: With electric steering lock

System Check (Backup Control Unit)
System Check No.
Possible cause
Check items
A-1
A-2
A-3
Keyless remote is mismatched
Engine start/stop switch failure
Keyless remote is not registered
Register the keyless remote
Check engine start/stop switch
B-1
B-2
PCM is replaced
Communication error between keyless access control unit and PCM
Register the PCM
Check PCM
C-1
C-2
MICU is replaced
Communication error between keyless access control unit and MICU
Open in the IG1 line
Register the keyless access control unit
Check MICU
Check harness
D-1
D-2
D-3
S-NET line is short
No communication between keyless access control unit and MICU (Imoes unit)
No communication between keyless access control unit and PCM
Check harness
Check MICU
Check PCM
E-1
E-2
E-3
E-4
E-5
Keyless access control unit is not registered
Register the keyless access control unit
F-1
F-2
F-3
F-4
F-5
Special mode
Turn the vehicle to the ON mode and then select the OFF (LOCK) mode with a registered keyless remote