MDX V6-3.7L (2007)
Engine Control Module: Removal and Replacement
PCM Replacement
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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USA, Canada models: During the procedure, is 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 vehicle systems. If it does not, 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 9,18 through 23, and 26 through 28, and do the following procedures
after replacing the PCM;
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USA, Canada models: Replace the engine oil and the engine oil filter.
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USA, Canada models: Replace the ATF.
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USA, Canada models: 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: USA, Canada models: If the TP POSITION CHECK indicates FAILED, continue with this procedure.
7. USA, Canada models: Select the REPLACE PCM MENU, then select READ DATA and follow the screen prompts.
NOTE:
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USA, Canada models: 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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USA, Canada models: If READ DATA indicates FAILED, continue with this procedure.
8. USA, Canada models: Select the A/T system with the HDS.
9. USA, Canada models: Select the REPLACE TCM/PCM MENU, then select READ DATA and follow the screen prompts.
NOTE:
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USA, Canada models: Doing this step copies (READS) the ATF life data from the original PCM so you can later download (WRITES) it into
the new PCM.
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USA, Canada models: If READ DATA indicates FAILED, continue with this procedure.
10. Turn the ignition switch OFF.
11. Jump the SCS line with the HDS.
