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

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Test M

PINPOINT TEST M: DTCs U1027, U1041, U1051 AND U1059


Test M1:






Test M2-M6:






Normal Operation
The speed control actuator receives module inputs from the ABS module, PCM, and SJB through the SCP network, circuit 914 (TN/OG) and circuit 915 (PK/LB).

Possible Causes
- ABS module
- PCM
- speed control actuator