Antitheft and Alarm Systems: Service and Repair

NOTE: When an error occurs during the reprogram procedures, except when both the immobilizer unit and PCM are replaced, repeat the procedure from Step 1. If you still cannot reprogram, confirm how many keys can start the engine. Then, perform the key replacement or addition reprogram procedure according to the valid key number.

To make a copy of the key or replace the immobilizer system component parts (the key(s), steering lock, immobilizer unit and/or PCM), the customer should bring all keys to the dealer. This is because the previously programmed key IDs are erased when reprogramming the key IDs into the immobilizer unit and PCM.

If the customer has only one valid key when replacing the immobilizer system component parts, the dealer should contact a distributor to obtain the code word.

To replace the immobilizer unit or PCM, there should be at least one valid key. Otherwise, both the immobilizer unit and PCM should be replaced.

The immobilizer unit and PCM can not be changed from one car to another. If an immobilizer unit or PCM is replaced with one from another car, the engine will not start. Reprogramming of the IDs and code word of an immobilizer unit that has already been programmed as set is not possible.

The immobilizer unit and PCM should not be newly replaced as a trial during troubleshooting. If this is done, the ID and code word will be programmed into the new unit and it cannot be used for other oars even if you find that the old unit was normal.

The immobilizer system cannot be deactivated.

Confirm that all keys registered can start the engine after the reprogram procedure. When confirming, wait for more than 5 seconds before inserting the next key.

When the customer does not need to register more than two keys, the following procedures can be stopped after registering two keys.

Key Replacement or Addition




When the customer has two or more valid keys

NOTE: If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Cut new transponder equipped key(s).
2. Using key 1, turn ignition switch to ON position then back to LOCK position five times. The key should not remain at ON position or LOCK position for more than 1 second.
1. Turn key 1 back to ON position. Observe illumination of security light in instrument cluster.
2. Turn key 1 to LOCK position and remove key 1 from steering lock. Observe security light goes out.

3. Using key 2, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 2 to LOCK position and remove from steering lock.

4. Repeat Step 3 with key 1.
5. Repeat Step 3 with key 3.
6. If there are 4-8 keys (valid and/or new keys), repeat Step 3.
7. Wait for 30 seconds to quit reprogram mode.




When the customer has only one or no valid key (code word is required)

NOTE: If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Cut new transponder equipped key(s).
2. Using key 1, turn ignition switch to ON position then back to LOCK position five times. The key should not remain at ON position or LOCK position for more than 1 second.
1. Turn key 1 back to ON position. Observe flashing of security light (300 ms ON - 300 ms OFF) in instrument cluster.
2. Turn key 1 to LOCK position and wait for 5 minutes until security light decreases in flashing frequency to 1.2 seconds.
3. Input code word.
4. Observe security light stops flashing and illuminates.
5. Start engine with key 1. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
6. Turn key 1 to LOCK position and remove from steering lock.

3. Using key 2, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 2 to LOCK position and remove from steering lock.

4. Repeat Step 3 with key 3.
5. If there are 4-8 keys (valid and/or new keys), repeat Step 3.
6. Wait for 30 seconds to quit reprogram mode.

Steering Lock Replacement




When the customer has two or more valid keys from the old steering lock

NOTE:
- When replacing the steering lock, the coil and keys should be replaced as a set.
- If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Remove old steering lock.
2. Connect new steering lock to ignition switch connector.
3. Connect old steering lock to coil connector as shown in figure.
4. Insert key 1 into old steering lock.
5. Insert key 3 into new steering lock and turn to ON position then back to LOCK position five times. The key should not remain at ON position or LOCK position for more than 1 second.
1. Turn key 3 back to ON position. Observe illumination of security light in instrument cluster.
2. Turn key 3 to LOCK position. Observe security light goes out.

NOTE: Operate next two steps within 30 seconds of Step 5-(2).

6. Remove key 1 from old steering lock and insert key 2 into old steering lock.
7. Using key 3 of new steering lock, start engine. Observe that security light illuminates (for 1-2 seconds) and engine continues to run.
1. Turn key 3 to LOCK position.

NOTE: Operate next two steps within 30 seconds of Step 7-(1).

8. Disconnect coil connector from old steering lock, and reconnect coil connector to new steering lock.
9. Using key 3 of new steering lock, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 3 to LOCK position and remove from steering lock.

10. Repeat Step 9 with key 4.
11. Repeat Step 9 with key 5.
12. Wait for 30 seconds to quit reprogram mode.
13. Install new steering lock.




When the customer has only one or no valid key (code word is required)

NOTE:
- When replacing the steering lock, the coil and keys should be replaced as a set.
- If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Replace steering lock.
2. Using key 1, turn ignition switch to ON position then back to LOCK position five times. Key should not remain at ON position or LOCK position for more than 1 second.
1. Turn key 1 back to ON position. Observe flashing of security light (300 ms ON - 300 ms OFF) in instrument cluster.
2. Turn key 1 to LOCK position and wait for 5 minutes until security light decreases in flashing frequency to 1.2 seconds.
3. Input code word.
4. Observe the security light stops flashing and illuminates.
5. Start engine with key 1. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
6. Turn key 1 to LOCK position and remove from steering lock.

3. Using key 2, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 2 to LOCK position and remove from steering lock.

4. Repeat Step 3 with key 3.
5. Wait for 30 seconds to quit reprogram mode.

Immobilizer Unit Replacement

When customer does not have valid key
- PCM needs to be replaced with immobilizer unit. Perform "Both Immobilizer unit and PCM Replacement" of the IMMOBILIZER SYSTEM REPROGRAM PROCEDURE.




When the customer has at least one valid key (code word is required)

NOTE: If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Cut new transponder equipped key(s) if necessary.
2. Replace immobilizer unit.
3. Using key 1, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 1 to LOCK position and remove from steering lock.

4. Using key 2, turn ignition switch to ON position then back to LOCK position five times. The key should not remain at ON position or LOCK position for more than 1 second.
1. Turn key 2 back to ON position. Observe flashing of security light (300 ms ON - 300 ms OFF) in instrument cluster.
2. Turn key 2 to LOCK position and wait for 5 minutes until security light decreases in flashing frequency to 1.2 seconds.
3. Input code word.
4. Observe the security light stops flashing and illuminates.
5. Start engine with key 2. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
6. Turn key 2 to LOCK position and remove from steering lock.

5. Using key 1, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 1 to LOCK position and remove from steering lock.

6. Repeat Step 5 with key 3.
7. If there are 4-8 keys (valid and/or new keys), repeat Step 5.
8. Wait for 30 seconds to quit reprogram mode.

PCM Replacement

When the customer does not have valid key
- Immobilizer unit needs to be replaced with PCM. Perform "Both Immobilizer unit and PCM Replacement" of the IMMOBILIZER SYSTEM REPROGRAM PROCEDURE.




When the customer has two or more valid keys

NOTE: If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Cut new transponder equipped key(s) if necessary.
2. Replace PCM.
3. Using key 1, turn ignition switch to ON position, and observe that security light illuminates (for 1 - 2 seconds) in instrument cluster.
1. Turn key 1 to LOCK position.
2. Turn key 1 to ON position then back to LOCK position six times. The key should not remain at ON position or LOCK position for more than 1 second. It is particularly important to ensure that the 6th turn is done within 1 second.
3. Remove key 1.

4. Using key 2, turn ignition switch to ON position. Observe that security light illuminates (for 1 - 2 seconds).
1. Turn key 2 to LOCK position and remove from steering lock.

5. Using key 1 start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 1 to LOCK position and remove from steering lock.

6. Repeat Step 5 with key 3.
7. If there are 4-8 keys (valid and/or new keys), repeat Step 5.
8. Wait for 30 seconds to quit reprogram mode.
9. After reprogramming, clear DTCs of PCM with NGS tester.




When the customer has only one valid key (code word is required)

NOTE: If no specific time interval is giver, each step should be performed within 30 seconds of the previous step.

1. Cut new transponder equipped key(s) if necessary.
2. Replace PCM.
3. Using key 1, turn ignition switch to ON position. Observe that security light illuminates (for 1 - 2 seconds) in instrument cluster.
1. Turn key 1 to LOCK position and remove from steering lock.

4. Using key 2, turn ignition switch to ON position then back to LOCK position six times. The key should not remain at ON position or LOCK position for more than 1 second. It is particularly important to ensure that the 6th turn is done within 1 second.
1. Observe flashing of security light (300 ms ON - 300 ms OFF) in instrument cluster.
2. Wait for 5 minutes until security light decreases in flashing frequency to 1.2 seconds.
3. Input code word.
4. Observe the security light stops flashing and illuminates.
5. Turn key 2 to ON position. Observe that security light illuminates (for 1 - 2 seconds).
6. Turn key 2 to LOCK position and remove from steering lock.

5. Using key 3, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
1. Turn key 3 to LOCK position and remove from steering lock.

6. Repeat Step 5 with key 1.
7. If there are 4-8 keys (valid and/or new keys), repeat Step 5.
8. Wait for 30 seconds to quit reprogram mode.
9. After reprogramming, clear DTC of PCM with NGS tester.

Both Immobilizer Unit and PCM Replacement

When the customer has two or more valid keys

NOTE:
- Keys may be valid or new keys.
- When an error occurs in Steps 1 to 4, repeat the procedure from Step 1.
- When an error occurs in Step 5, perform the "Reprogram error recovery procedure for both immobilizer unit and PCM replacement".
- If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Cut new transponder equipped key(s) if necessary.
2. Replace immobilizer unit and PCM.
3. Using key 1, turn ignition switch to ON position. Observe security light illuminates and then goes out in instrument cluster.
1. Turn key 1 to LOCK position. Observe security light blinks once repeatedly.

4. Using key 2, turn ignition switch to ON position. Observe security light illuminates and then goes out.
1. Turn key 2 to LOCK position. Observe security light blinks twice repeatedly.

5. Using key 3, turn ignition switch to ON position. Observe security light illuminates and then goes out.
1. Turn key 3 to LOCK position. Observe security light blinks three times repeatedly.

6. If there are 4-8 keys (valid and/or new keys), repeat Step 4.
7. Wait for 30 seconds to quit reprogram mode.
8. After reprogramming, clear DTCs of PCM with NGS tester.

Reprogram error recovery procedure for both immobilizer unit and PCM replacement

NOTE: If no specific time interval is given, each step should be performed within 30 seconds of the previous step.

1. Using key 1, start engine. After security light illuminates for 1 - 2 seconds, turn key 1 to LOCK position.
2. Using key 1, turn ignition switch to ON position then back to LOCK position five times. Key should not remain at ON position or LOCK position for more than 1 second.
3. Using key 1, turn ignition switch to ON position (security light illuminates).
4. Turn key 1 to LOCK position and remove from steering lock (security light goes cut).
5. Using key 2, start engine. Observe that security light illuminates (for 1 - 2 seconds) and engine continues to run.
6. Turn key 2 to LOCK position and remove from steering lock.
7. Repeat Steps 5 and 6 with key 1.
8. Repeat Steps 5 and 6 with key 3.
9. If there are 4-8 keys (valid and/or new keys), repeat Steps 5 and 6.
10. Wait for 30 seconds to quit reprogram mode.
11. After reprogramming, clear DTCs of PCM with NGS tester.