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)

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Monitor Scantool Data





Monitor Scantool Data

1. Park the vehicle on a level surface.
2. Connect 'TPMS exciter' or scantool to Data Link Connector (DLC).
3. Select "TPMS DIAGNOSIS" mode.
4. Select the "FULL" mode of "CURRENT DATA" function.
5. Monitor the parameter of RF RSSI background on the 'TPMS exciter' or scantool after 9 minutes.
A. Specification : "RSSI background" is less than 1.5V




6. Is parameter within specifications ?
YES
1) Fault is intermittent. It has been repaired and TPMS receiver module memory is not cleared yet.
2) Go to "Verification of vehicle Repair" procedure.
NO
1) Substitute with a known-good TPMS receiver module and check for proper operation.
2) If the problem is corrected, replace TPMS receiver module and then go to "Verification of Vehicle Repair" procedure.