2007- 2011 Honda CR-V PCM Idle Learn Proceedure

If you replace the air cleaner element, reset the PCM with the Honda HDS, and do the PCM idle learn procedure.

**Note:** Disconnecting the battery for a few minutes will also reset the PCM but doing so will cause you to have to reenter the radio code and perhaps stations.

PCM Idle Learn Procedure

The idle learn procedure must be done so the PCM can learn the engine idle characteristics. 

Do the idle learn procedure whenever you do any of these actions:
-Replace the PCM.
-Reset the PCM.
-Update the PCM.
-Replace or clean the throttle body.
-Disassemble the engine or the transmission.

NOTE: Clearing the DTC's with the HDS does not require you to do the idle learn procedure.

Procedure

1. Make sure all electrical items (A/C, audio, lights, etc.) are off.
2. Reset the PCM with the HDS.
3. Turn the ignition switch to ON (II), and wait 2 seconds.
4. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, or until the coolant temperature reaches 194 degrees F (90 degrees C).
5. Let the engine idle for about 5 minutes with the throttle fully closed.

NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes."


PCM=Powertrain Control Module
DTC =Diagnostic Test Code
HDS=Honda Diagnostic System

I did this to my '07 and to my surprise it did idle a little rough at first and smoothed out during the procedure.

2007 Honda CR-V Immobilizer Key Registration with HDS

Here is the procedure from the 2007 Honda CR-V service manual.

Immobilizer Key Registration
NOTE:
The HDS is required for registration of the immobilizer keys.
Programming the immobilizer also programs the keyless transmitter.
Check for aftermarket electrical equipment that can cause problems with transponder operation.
The immobilizer control unit-receiver can store up to six immobilizer Keys.

Add one new key/Keyless transmitter
1. Have a registered key, a new immobilizer key, and the first password from the iN system.
2. Connect the HDS to the data link connector.
3. Turn the ignition switch ON (II).
4. Select "IMMOBILIZER" from the "SYSTEM SELECT" menu.
5. Select "Add and Delete keys", then "Add 1 key".
6. Do the registration according to the instructions on the HDS screen.
7. Check if the engine can be started by the newly registered key.

Add and Delete keys/Keyless transmitters,
Then select Delete or Add keys
1. Have all registered keys, all new keys, and the first password.
2. Connect the HDS HIM to the data link connector.
3. Turn the ignition switch ON (II).
4. Select "IMMOBILIZER" from the "SYSTEM SELECT" menu.
5. Select "Add and Delete Keys", or "Delete or Add Multiple Keys".
6. Do the registration according to the instruction of HDS screen.
7. Check if the engine can be started by all the registered keys.

All keys are lost
1. Prepare all new keys and have the immobilizer PCM code.
2. connect the HDS to the data link connector.
3. Turn the ignition switch ON (II).
4. Select "IMMOBILIZER" from the "SYSTEM SELECT" menu.
5. Select "Add and Delete keys", then "ALL KEYS LOST".
6. Do the registration according to the instruction of HDS screen.
7. Check if the engine Can be started by all the registered keys.

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