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

Engine Will Not Crank

Test 1 - 2:




Test 3 - 7:




Test 8 - 12:




Test 13 - 14:





SYMPTOM
ENGINE WILL NOT CRANK

POSSIBLE CAUSES
- Battery cable high resistance
- Battery cables
- Checking ECM power and grounds
- Checking for TCM codes
- ECM
- ECM Codes present
- Ignition switch output (start) circuit open
- Mechanical problem
- Starter Motor
- Starter motor relay
- Starter motor relay circuit(s) open
- Starter motor relay circuit(s) shorted to ground
- Starter relay control circuit shorted to voltage
- Starter relay output circuit open