Sensor Test
Remove plug A from module (see illustration). Connect an ohmmeter between pins two and three of connector (see illustration). Resistance should be 2400-3200 ohms. Connect ohmmeter between ground and either connector pin (see illustration). Resistance should be infinite. If resistance is not to specifications, remove connector from sensor at rear axle and repeat resistance checks at terminals of sensor. If resistance is still not to specifications, replace sensor. If resistance is correct at sensor but not at plug, problem is in wiring harness.