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)

Or, hide this message: temporarily or permanently

With Automatic Transaxle (ATX)

1. Unplug PCME connectors and connect Mazda SST or aftermarket equivalent.
2. Measure voltage at each terminal and compare to charts.
3. If any terminal voltage is incorrect, check the related input or output devices and wiring. If no problem is found, replace the PCME.

PCME TERMINAL VOLTAGE CHARTS

Part 1

PCME Terminal Voltage Chart (Part 1):






Part 2

PCME Terminal Voltage Chart (Part 2):






Part 3

PCME Terminal Voltage Chart (Part 3):






Part 4

PCME Terminal Voltage Chart (Part 4):






Part 5

PCME Terminal Voltage Chart (Part 5):