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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Vehicle Speed Sensor: Testing and Inspection
With ECU test harness installed voltage between terminals 26 and 39 on engines should pulse from zero to battery voltage between terminals 8 and 39.
Perform Speed sensor circuit test.
Fig. 61 ECU System Diagnosis, Vehicle Speed Sensor Check:
