Code 2-1-4 (Permanent/Magnet Generator Or Engine Speed Sensor Signal)

Turn ignition off. Disconnect ECU connector and remove protective sleeve. Connect an ohmmeter between terminals No. 10 (Blue/Yellow wire on 240 series and Red wire on 740 GL) and No. 23 (Yellow/Red wire on 240 series and Blue wire on 740 GL). Resistance should be 215-265. If resistance is not within specification, check wiring. If wiring is okay, check sensor. See PERMANENT/MAGNET GENERATOR in the SYSTEM/COMPONENT TESTS article in this section.