Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Honda Insight BaseFACTORY OEM SERVICE PROCEDURE
System Check
- Connect the HDS to the data link connector.
- Turn the ignition switch to ON (II).
- Monitor the System Check in the Immobilizer Info with the HDS.
- If the HDS displays Normal N-1, the immobilizer system is OK at this time, refer to the STATUS LOGΒ . If the HDS displays any other messages, check as follows:SYSTEM CHECK CHART
System Check No. Status Log. Indication System Check Possible Failures A-1 Possible The key is not registered - This key is not registered in the immobilizer-keyless control unit. Try to register keys using the HDS.
- Poor communication between the antenna and the immobilizer key because of interference caused by items such as key chains.
- Poor communication between the antenna and the immobilizer key because of low battery voltage.
A-2 Possible Communication error between the key and immobilizer-keyless control unit - Intermittent interruption between transponder and immobilizer-keyless control unit.
- The immobilizer key type is different. It is not for this vehicle but for another one or for another company's one.
- Key failure (transponder failure)
- Poor communication between the antenna and the immobilizer key because of interference caused by items such as key chains.
- Poor communication between the antenna and the immobilizer key because of low battery voltage.
A-3 Possible No communication between the key and immobilizer-keyless control unit - The ignition switch was turned to ON (II) with a non-immobilizer key.
- The immobilizer key type is different. It is not for this vehicle but for another one or for another company's one.
- Key failure (transponder failure)
- Poor communication between the antenna and the immobilizer key because of interference caused by items such as key chains.
- Poor communication between the antenna and the immobilizer key because of low battery voltage.
- Immobilizer-keyless control unit failure
B-1 Possible The PCM is not registered - The PCM was not registered. Try to register the PCM using the HDS.
- Poor communication between the PCM and the immobilizer-keyless control unit because of low battery voltage.
- Poor communication between the immobilizer-keyless control unit and the PCM because of electrical interference.
B-2 Possible Error of communication format in PCM - The PCM was not registered. Try to register the PCM using the HDS.
- Poor communication between the PCM and the immobilizer-keyless control unit because of low battery voltage.
- Poor communication between the immobilizer-keyless control unit and the PCM because of electrical interference.
C-1 Possible MICU/IMOES unit is not registered The MICU/IMOES unit was not registered correctly. Try to register the MICU/IMOES unit using the HDS. C-2 Possible Error of communication format between MICU/IMOES unit and immobilizer-keyless control unit. - The MICU/IMOES unit was not registered correctly. Try to register the MICU/IMOES unit using the HDS.
- Poor communication between the PCM and the immobilizer-keyless control unit because of low battery voltage.
- Poor communication between the immobilizer-keyless control unit and the PCM by influence of some noise.
D-1 Possible S-Net line short - Harness short from the PCM to the immobilizer-keyless control unit. (IMOCD/S-NET line short)
- Poor communication between the PCM and the immobilizer key-less control unit because of low battery voltage.
- Poor communication between the immobilizer-keyless control unit and the PCM because of electrical interference.
- Immobilizer-keyless control unit failure
- PCM failure
D-2 Possible No communication between MICU/IMOES unit and immobilizer-keyless control unit - Blown fuse
- Harness open from the MICU/IMOES unit to immobilizer-keyless control unit.
- Poor communication between the MICU/IMOES unit and the immobilizer-keyless control unit because of low battery voltage.
- Poor communication between the immobilizer-keyless control unit and the MICU/IMOES unit because of electrical interference.
- Immobilizer-keyless control unit failure
- MICU/IMOES unit failure
D-3 Possible No communication between the PCM and immobilizer-keyless control unit - Blown fuse
- Harness open from the PCM to the immobilizer-keyless control unit.
- Poor communication between the PCM and the immobilizer-keyless control unit because of low battery voltage.
- Poor communication between the immobilizer-keyless control unit and the PCM because of electrical interference.
- Immobilizer-keyless control unit failure
- PCM failure
E-1 Possible initial registration of immobilizer-keyless control unit is not completed The immobilizer-keyless control unit is not registered. Try to register the immobilizer-keyless control unit using the HDS. E-2 E-3 E-4 E-5 F-1 Possible Special Mode Turn the ignition switch to ON (II) and to LOCK (0) with the registered key. F-2 F-3 F-4 F-5
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
