PCM Removal And Installation: Removal

NOTE: 

• Make sure the HDS or the MVCI has the latest HDS software version.
• If you are replacing the PCM after substituting a known-good PCM, reinstall the original PCM, then do this procedure.
• If you are removing or substituting the PCM, skip the procedures of READ DATA.

1. HDS - Connect

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   1. Turn the vehicle to the ON mode, but do not start the engine. 2. Connect the HDS to the DLC (A) located under the driver's side of the dashboard. 3. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting .

2. READ DATA (Engine Oil Life) - Select (USA and Canada Models)

   1. Select the PGM-FI system with the HDS. 2. Select the REPLACE PCM MENU, then select READ DATA, and follow the screen prompts. Doing this step copies (READS) the engine oil life data from the original PCM so you can later download (WRITES) them into the new PCM. If the READ DATA indicates FAILED, continue with this procedure.

3. READ DATA (ATF Life) - Select (USA and Canada Models)

   1. Select the A/T system with the HDS. 2. Select the REPLACE TCM/PCM MENU, then select READ DATA, and follow the screen prompts. Doing this step copies (READS) the ATF life data from the original PCM so you can later download (WRITES) it into the new PCM. If the READ DATA indicates FAILED, continue with this procedure.

4. SCS - Short

   1. Jump the SCS line with the HDS. 2. Turn the vehicle to the OFF (LOCK) mode.

5. PCM Cover - Remove

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   Remove the PCM cover (A).

6. PCM - Remove

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   1. Disconnect PCM connectors A, B, and C. NOTE:  PCM connectors A, B, and C have symbols (A=□, B=Δ, C=o) embossed on them for identification. 2. Remove the PCM (D).