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 B: TPMS Will Not Enter Sensor Training Mode

Pinpoint Test B: TPM's Will Not Enter Sensor Training Mode

Normal Operation
With the ignition switch in the ON position, the TPM's module enters the training mode when a combination of inputs are received from the brake on/off (BOO) switch and the ignition status switch (from the instrument cluster). The BOO signal and ignition status signal are sent to the TPM's module on the SCP network.

Possible Causes
^ Circuit open
^ Circuit shorted
^ BOO switch
^ VSM module

B1-B2: