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

Handling No Trouble Code Problems

NOTE: Read DESCRIPTION AND OPERATION, to gain a better understanding of the theory and operation of the powertrain control system.

NO TROUBLE CODE testing is broken down into three test methods:

- No Code Complete Test
- No Code Quick Individual Test
- No Code Quick Symptom Test

NOTE: Always start with NTC-1, for proper sequence of tests and proper test procedures. NTC-1A No Trouble Code Menu - Start Here