Grand Vitara, Vitara & XL-7

For vehicle speed sensor inspection. Back probing, connect voltmeter between VSS signal wire at ECM/PCM and ground. On Vitara, backprobe ECM/PCM terminal C51-2 terminal No. 25 (Blue/Yellow wire). On Grand Vitara, backprobe ECM/PCM terminal C51-3 terminal No. 1 (Blue/Yellow wire). On XL-7, backprobe ECM/PCM terminal C51-1 terminal No. 14 (Blue/Yellow wire). Hoist vehicle, put vehicle in neutral. Turn ignition switch to ON position. Turn right rear tire slowly, left rear tire needs to be held stationary. While rotating tire, voltmeter should fluctuate a few times between 0-1 volt and 8-14 volts (exact number of times not given by manufacturer). If voltages are not as specified, see DTC P0500. VEHICLE SPEED SENSOR (VSS) MALFUNCTION under DIAGNOSTIC TESTS in appropriate SELF-DIAGNOSTICS article.

Remove VSS from transaxle. Inspect VSS assembly for damage or binding. Using an ohmmeter, measure resistance between sensor terminals. See VEHICLE SPEED SENSOR RESISTANCE  table.