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

Checking Speed Control Operation With No DTC's Present

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 14:

Tests 15 - 16:

SYMPTOM
CHECKING THE SPEED CONTROL OPERATION

POSSIBLE CAUSES
- CANCEL switch
- COAST switch
- Connector observable defect
- Ground circuit open
- SET switch
- Vacuum solenoid control circuit open
- Vent solenoid control circuit open
- Throttle cable observable defect
- Vacuum check valve
- S/C servo
- Vacuum supply leak or restriction