Page 3337 of 4264
IMMOBILIZER SYSTEM 11A-51
Step Action Value(s) Yes No
9 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Go to Step 10
10 Check the immobilizer programming functions.
Immobilizer control unit (ICU).
All transponder (Key).
If a problem is found, repair as necessary.
(Refer to "Important information on Programming")
Was the action complete?
Go to Step 11
11 Recheck the DTC.
1. Key position is “OFF” and keep the position for more
than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0011 stored?
Go to Step 12
Verify repair
12 Replace the transponder (Key).
IMPORTANT:
The replacement transponder (key) must
be programmed the security data by scan tool.
Was the action complete?
Verify repair
Page 3338 of 4264

11A-52 IMMOBILIZER SYSTEM
B0012 WRONG TRANSPONDER KEY (Only 4JA1-T Engine)
Step Action Value(s) Yes No
1
Was the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Check the key.
Is a key peculiar to a vehicle?
Go to Step 3
Refer to
Diagnostic Aids
3 Check the immobilizer programming functions.
Transponder (Key).
Was a problem found?
Go to Step 4
Go to Step 5
4 Perform the immobilizer programming functions.
Transponder (Key).
(Refer to "Important information on Programming")
Was the action complete?
Go to Step 5
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0012 stored?
Go to Step 6
Verify repair
6 Replace the transponder (Key).
IMPORTANT
: The replacement transponder (key)
must be programmed the security data by scan tool.
Was the action complete?
Go to Step 7
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0012 stored?
Go to Step 8
Verify repair
8 Replace the immobilizer control unit (ICU).
IMPORTANT
: The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Verify repair
Page 3339 of 4264

IMMOBILIZER SYSTEM 11A-53
B0013 IMMOBILIZER NOT PROGRAMMED (Only 4JA1-T Engine)
Step Action Value(s) Yes No
1
Was the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Check the immobilizer programming functions.
Immobilizer control unit (ICU).
If a problem is found, repair as necessary.
(Refer to "Important information on Programming")
Was the action complete?
Go to Step 3
Go to Step 5
3 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0013 stored?
Go to Step 4
Verify repair
4 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Verify repair
5 Check the immobilizer programming functions.
Engine control immobilizer unit.
Immobilizer control unit (ICU).
If a problem is found, repair as necessary.
(Refer to "Important information on Programming")
Was the action complete?
Verify repair
Go to Step 6
6 Replace the key and lock cylinder assembly and
immobilizer system (ICU and Engine immobilizer
unit).
IMPORTANT:
ICU and Engine immobilizer unit are not
replacing simultaneously.
After replace lock cylinders, perform the
following below the items.
Program the immobilizer system.
(Refer to "Important information on Programming")
Was the action complete?
Verify repair
Page 3340 of 4264

11A-54 IMMOBILIZER SYSTEM
B0014 NO TRANSPONDER KEY PROGRAMMED (Only 4JA1-T Engine)
Step Action Value(s) Yes No
1
Was the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Check the key.
Is a key peculiar to a vehicle?
Go to Step 3
Refer to
Diagnostic Aids
3 Check the immobilizer programming functions.
Transponder (Key).
Was a problem found?
Go to Step 4
Go to Step 5
4 Perform the immobilizer programming functions.
Transponder (Key).
(Refer to "Important information on Programming")
Was the action complete?
Go to Step 5
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0014 stored?
Go to Step 6
Verify repair
6 Replace the transponder (Key).
IMPORTANT:
The replacement transponder (key)
must be programmed the security data by scan tool.
Was the action complete?
Go to Step 7
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0014 stored?
Go to Step 8
Verify repair
8 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Verify repair
Page 3341 of 4264

IMMOBILIZER SYSTEM 11A-55
B0015 FREQUENCY SIGNAL LOW (Only 4JA1-T Engine)
Step Action Value(s) Yes No
1 Was the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the scan tool on vehicle.
3. Key position is “ON”.
4. Check the DTC on scan tool.
Is DTC B0015 stored?
Go to Step 3
Refer to
Diagnostic Aids
3 Check the immobilizer communication W line circuit.
1. Key position is “OFF”.
2. Disconnect the immobilizer control unit (ICU).
3. Disconnect the Engine immobilizer unit.
4. Check the immobilizer communication W line
circuit for an open, short to ground, or short to
voltage.
Also, check the ICU and Engine immobilizer unit
ignition feed circuits for an open or short to ground
and the ICU and Engine immobilizer unit ground
circuit for an open.
Was a problem found?
Go to Step 4
Go to Step 5
4 Repair or replace the immobilizer communication W
line circuit.
Was the action complete?
Verify repair
5 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Verify repair
Page 3342 of 4264

11A-56 IMMOBILIZER SYSTEM
B0016 FREQUENCY SIGNAL HIGH (Only 4JA1-L Engine)
Step Action Value(s) Yes No
1
Was the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the scan tool on vehicle.
3. Key position is “ON”.
4. Check the DTC on scan tool.
Is DTC B0016 stored?
Go to Step 3
Refer to
Diagnostic Aids
3 Check the immobilizer communication W line circuit.
1. Key position is “OFF”.
2. Disconnect the immobilizer control unit (ICU).
3. Disconnect the engine control module (Engine
immobilizer unit).
4. Check the immobilizer communication W line
circuit for an open, short to ground, or short to
voltage.
Also, check the ICU and Engine immobilizer unit
ignition feed circuits for an open or short to ground
and the ICU and Engine immobilizer unit ground
circuit for an open.
Was a problem found?
Go to Step 4
Go to Step 5
4 Repair or replace the immobilizer communication W
line circuit.
Was the action complete?
Verify repair
5 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Verify repair
Page 3343 of 4264

IMMOBILIZER SYSTEM 11A-57
B0023 IMMOBILIZER COIL CIRCUIT (ANTENNA COIL FAULT)
(Only 4JA1-T Engine)
Step Action Value(s) Yes No
1
Was the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Check the immobilizer coil (antenna) circuit.
1. Key position is “OFF”.
2. Disconnect the immobilizer control unit (ICU).
(immobilizer coil circuit : 3 pin connector)
3. Check the immobilizer coil circuit for an open, short
to ground, or short to voltage.
Also, check the ICU ignition feed circuit for an open or
short to ground and the ICU ground circuit for an
open.
Was a problem found?
Go to Step 3
Go to Step 4
3 Repair or replace the immobilizer coil (antenna).
Was the action complete?
Verify repair
4 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0023 stored?
Go to Step 5
Verify repair
5 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete?
Verify repair
Page 3344 of 4264

11A-58 IMMOBILIZER SYSTEM
B0024 WRONG TRANSPONDER KEY (Only 4JA1-T Engine)
Step Action Value(s) Yes No
1
W as the "Immobilizer System Check" performed?
Go to Step 2
Go to Immobilizer
System Check
2 Check the key.
Is a key peculiar to a vehicle?
Go to Step 3
Refer to
Diagnostic Aids
3 Check the immobilizer programming functions.
Transponder (Key).
W as a problem found?
Go to Step 4
Go to Step 5
4 Perform the immobilizer programming functions.
Transponder (Key).
(Refer to "Important information on Programming")
W as the action complete?
Go to Step 5
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0024 stored?
Go to Step 6
Verify repair
6 Replace the transponder (Key).
IMPORTANT
: The replacement transponder (key)
must be programmed the security data by scan tool.
Was the action complete?
Go to Step 7
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0024 stored?
Go to Step 8
Verify repair
8 Replace the immobilizer control unit (ICU).
IMPORTANT
: The replacement ICU must be
programmed the security data by scan tool.
W as the action complete?
Verify repair