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

Test P: No Power To The Scan Tool

PINPOINT TEST P: NO POWER TO THE SCAN TOOL


P1:






P1-P3:






Normal Operation
The scan tool is connected to the data link connector (DLC) to communicate with the high speed controller area (HS-CAN) network, the standard corporate protocol (SCP) network, the UART-based protocol (UBP) network and the International Standards Organization (ISO) 9141 network. Voltage for the scan tool is provided by circuit 40 (LB/WH). Ground is provided by circuits 1203 (BK/LB) and 1205 (BK).

Possible Causes
- Fuse
- Circuit 40 (LB/WH) open
- Circuit 1203 (BK/LB) open
- Circuit 1205 (BK) open
- Scan tool