Chart B5 - Anti-Lock Light Circuit TORONADO: Diode

WARNING: This page is about a different car, the 1990 Oldsmobile Toronado, 1989 Oldsmobile Toronado, and 1988 Oldsmobile Toronado. However, it is still accessible from the selected car via links, so may be relevant.

When main relay is enabled, power is provided to EBCM on pins No. 3 and 20 on circuit No. 850. When voltage is present on this circuit, the diode protects EBCM pin No. 27 and ANTI-LOCK light from overvoltage. If diode shorts, code 61 should be set.

Fig 1: Chart B5 "Anti-Lock" Light Circuit