DTC B1189
Precautions: Precautions for Diagnosing Trouble · Precautions for Immobilizer System · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC Detecting Condition | Trouble area |
|---|---|
|
B1189: Immobilizer Antenna Communication Error Communication error with immobilizer control module (built-in immobilizer coil antenna). |
•Immobilizer control module circuit / connector
•Immobilizer control module •Keyless entry control module |
Circuit Diagram
| [A]: | Immobilizer control module connector (View: [a]) | A2: | Immobilizer control module signal circuit 2 | 1. | Immobilizer control module (including immobilizer coil antenna) |
| [B]: | Keyless entry control module connector (View: [a]) | A3: | Immobilizer control module signal circuit 3 | 2. | Keyless entry control module |
| A1: | Immobilizer control module signal circuit 1 | A4: | Immobilizer control module signal circuit 4 |
DTC Confirmation Procedure
1)Set ignition “ON” for 10 sec.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Immobilizer control module signal circuit check
1)Check that ignition is “OFF”.
2)Disconnect “G17” and “G16” connectors.
3)Check for proper terminal connection to “G17” and “G16” connectors.
4)If connections are OK, check the following points.
•Resistance of “A1”, “A2”, “A3” and “A4” circuits: less than 1 Ω
•Resistance between each of “A1”, “A2”, “A3” and “A4” circuits and ground: infinity •Resistance between circuit terminal and other terminals at “G17” connector: infinity Is check result OK?
|
Go to Step 2.
|
Repair or replace defective wire harness.
|
| 2 |
DTC check
1)Replace immobilizer control module.
2)Perform DTC Confirmation Procedure and then recheck DTC.
Is DTC B1189 still detected?
|
Replace keyless entry control module and recheck DTC.
|
End. (Immobilizer control module was faulty)
|