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

Exhaust Gas Recirculation

EGR System:








1 = EGR VALVE
2 = EGR MODULATOR
3 = VSV
4 = MAIN SWITCH
5 = BATTERY
6 = CONTROL RELAY
7 = BRAKE PEDAL SWITCH (STOP LIGHT SWITCH)
8 = LOCK-UP RELAY (FOR A/T VEHICLE)
9 = LOCK-UP SOLENOID (FOR A/T VEHICLE)
10 = ECM
11 = IGNITION COIL
12 = COOLANT TEMPERATURE SENSOR (CTS)
13 = MANIFOLD AIR PRESSURE (MAP) SENSOR
14 = 5TH SWITCH (FOR M/T VEHICLE)
15 = EXHAUST GAS
16 = VACUUM
17 = AIR
18 = THROTTLE POSITION SENSOR (TPS)