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

Checking Speed Control Operation With No DTC's Present

Tests 1 - 3:




Tests 4 - 9:




Tests 10 - 14:




Tests 15 - 18:




Tests 19 - 24:




Tests 25 - 28:




Tests 29 - 33:




Tests 34 - 36:




Tests 37 - 41:




Tests 42 - 47:




Test 48:




SYMPTOM
*CHECKING SPEED CONTROL OPERATION WITH NO DTC'S PRESENT

POSSIBLE CAUSES
- S/C switch signal circuit to clockspring connector open
- Ground circuit at S/C servo connector open
- Ground circuit to S/C Resume/Accel switch connector open
- DRB III does not show set switch "pressed" or released
- S/C wiring harness observable problem
- Cancel Switch
- Coast switch
- Throttle cable observable problem
- Throttle opens and closes
- Speed control ON/OFF switch stuck
- Speed control Resume/Accel switch
- Speed control Resume/Accel switch stuck