RDX L4-2.3L Turbo (2008)
Engine Control Module: Removal and Replacement
PCM Replacement
Special Tools Required
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Honda diagnostic system (HDS) tablet tester
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Honda interface module (HIM) and an iN workstation with HDS and CM update software
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HDS pocket tester
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GNA-600 and an iN workstation with HDS and CM update software
NOTE:
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Make sure the HDS is loaded with the latest software version.
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If you are replacing the PCM after substituting a known-good PCM, reinstall the original PCM, then do this procedure.
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During the procedure, if any READ DATA, WRITE DATA, or other data checks fail, note the failure, then continue.
1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the PCM and other vehicles system. If it doesn't, go to the DLC circuit troubleshooting. See: Testing and
Inspection/Component Tests and General Diagnostics/DLC Circuit Troubleshooting
If you are returning from DLC circuit troubleshooting, skip steps 4 through 7, 16 through 18, and 21 through 22, and do the Following procedures
after replacing the PCM (USA, Canada models);
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Replace the engine oil and the engine oil filter.
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Clean the throttle body.
4. USA, Canada models: Select the PGM-FI system with the HDS.
5. USA, Canada models: Select the INSPECTION MENU with the HDS.
6. USA, Canada models: Select the ETCS TEST, then select the TP POSITION CHECK, and follow the screen prompts.
NOTE: If the TP POSITION CHECK indicates FAILED, continue with this procedure.
7. USA, Canada models: Select the REPLACE PCM MENU, then READ DATA and follow the screen prompts.
NOTE:
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Doing this step copies (READS) the engine oil life data from the original PCM so you can later download (WRITES) it into the new PCM.
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If READ DATA indicates FAILED, continue with this procedure.
8. Turn the ignition switch OFF.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connectors A, B, and C.
