Test E: Height Sensor Signal Shorted To Ground

Check Sensor Connector

Disconnect suspect height sensor connector. See Figure or Figure . Check connector for corrosion, bent pins and damaged wires. If connector is okay, go to next step. If connector is worn or damaged, repair as necessary and repeat ON-DEMAND SELF-TEST and PNEUMATIC TEST under DIAGNOSTIC TEST MODE .

Check Circuit No. 430

Disconnect Vehicle Dynamics Module (VDM) 60-pin connector. VDM is located in trunk, behind package tray. Install Breakout Box (007-00033), leaving VDM disconnected. Measure resistance between ground and terminal No. 60 (Gray Wire) at breakout box. If resistance 3 ohms or less, go to next step. If resistance is 3 ohms or more, repair open in Gray wire. See WIRING DIAGRAMS . Repeat ON-DEMAND SELF TEST and PNEUMATIC TEST under DIAGNOSTIC TEST MODE .

Check Wiring Harness

Measure resistance between breakout box test pin No. 60 (Gray wire) and suspect height sensor test pin. See HEIGHT SENSOR TEST PIN IDENTIFICATION TABLE. If resistance is 10,000 ohms or more, go to next step. If resistance is less than 10,000 ohms, repair short to ground in suspect height sensor wire and repeat ON-DEMAND SELF-TEST and PNEUMATIC TEST under DIAGNOSTIC TEST MODE .

Check Circuit No. 432

Measure resistance between breakout box test pin No. 46 (Black/Pink wire) and suspect height sensor test pin. See HEIGHT SENSOR TEST PIN IDENTIFICATION TABLE. If resistance is 10,000 ohms or more, go to next step. If resistance is less than 10,000 ohms repair short circuit in Black/Pink wire and repeat ON-DEMAND SELF-TEST and PNEUMATIC TEST under DIAGNOSTIC TEST MODE .

Check For Short To Ground

Connect VDM to breakout box. Hook-up New Generation Star (NGS) tester. See EQUIPMENT HOOK-UP under TESTING & DIAGNOSIS. Rotate dial (on scan tester) to menu item DIAGNOSTIC DATA LINK, and press trigger to select. Select VDM-VEHICLE DYNAMICS MODULE. Select ACTIVE COMMAND MODES. Select AIR SUSPENSION CONTROLS. Command HGT POWER: ON. Measure voltage between breakout box test pin No. 46 (Black/Pink wire) and suspect height sensor test pin. See HEIGHT SENSOR TEST PIN IDENTIFICATION TABLE in step 3). If voltage is 2.3-2.7 volts, go to next step. If voltage is not 2.3-2.7 volts, replace VDM and repeat ON-DEMAND SELF-TEST and PNEUMATIC TEST under DIAGNOSTIC TEST MODE . Adjust riding height. See RIDING HEIGHT under ADJUSTMENTS & INSPECTION.

Check Sensor Signal

Reconnect suspect height sensor. Command HGT POWER: ON as in step 5). Measure voltage between breakout box test pin No. 46 (Black/Pink wire) and suspect height sensor test pin. See HEIGHT SENSOR TEST PIN IDENTIFICATION TABLE in step 3). If voltage is more than .5 volt, no problem is indicated at this time. Fault may be intermittent. See WIGGLE TEST and SEMI-ACTIVE RIDE CONTROL under DIAGNOSTIC TEST MODES . If voltage is .5 volt or less, replace suspect height sensor and repeat ON-DEMAND SELF-TEST and PNEUMATIC TEST under DIAGNOSTIC TEST MODE . Adjust riding height. See RIDING HEIGHT under ADJUSTMENTS & INSPECTION .

HEIGHT SENSOR TEST PIN IDENTIFICATION