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

Tester Abbreviations

DIS ABBREVIATIONS

ABBREVIATION DEFINITION

PIP Profile Ignition Pickup (Crankshaft sensor signal)
CID Cylinder Identification
SPOUT Spark Output (EEC spark control signal)
IDM Ignition Diagnostic Monitor (Diagnostic signal to EEC-IV)
BAT+ Battery positive
BAT- Battery negative
GND Low current ground reference
DPI Dual Plug Inhibit (High - right plugs fire; Low - both sides fire)
RC1, RC2 Right Coil Drive (For coils 1 and 2 right side of engine)
LC1, LC2 Left Coil Drive (For coils 1 and 2 left side of engine)

OVERLAY DESIGNATORS

PREFIX/ MEASUREMENT
SUFFIX LOCATION

Prefix "J "is a breakout box jack
Suffix "D" is at the DIS module
Suffix "S" is at the sensor"
Suffix "EEC" is at the signal source (the sensor) except PIP EEC which comes from the DIS module
Suffix "C" is at the coil