Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Component Tests and General Diagnostics

PCM Location:




INSPECTION
1. Disconnect the PCM connector.
2. Connect the Special Service Tool SST (104 pin breakout box) between vehicle harness and PCM.
3. Measure the voltage at each terminal with a voltmeter.
4. If any PCM terminal voltage is incorrect, check the related input or output devices and wiring. It no problem is found, replace the PCM.
















Specifications
NOTE: All values shown may vary ± 20% depending on operating conditions and other factors. RPM values are axle and tire dependent.




PID Data Monitor

NOTE: You can also inspect any PID values through scan tool or SST New Generation Star (NGS) tester.