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Deviate relay location and fuse placements as well as the locations of multiple connectors see section ”component locations” Relay location on the thirteenfold auxiliary relay panel, above relay panel: 4 A/C Cut-Off Control Module (384) Relay panel:
Relay location on the eightfold auxiliary relay panel, behind relay panel: 5 First Speed Coolant Fan Control (FC) (214)
8 Second Speed Coolant Fan Control (FC) Relay (213) Note: Number in parentheses indicates production control number stamped on relay housing.

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Before replacing any air suspension components, disconnect power to the system by turning off the air suspension switch located in the rh kick panel area to prevent vehicle damage or personal injury. Rear Air Suspension Load Leveling Control Components
Compressor Air Drier Air Suspension Switch Generic Electronic Module (GEM) Powertrain Control Module Air Suspension Control Module
Check Air Suspension Indicator Vehicle Speed Sensor Electronic Steering Sensor Ignition Switch Air Suspension Height Sensor— (Rear)
Rear Air Springs Air Lines Brake Pedal Position (BPP) Switch Electronic Variable Orifice (EVO) Actuator Air Compressor Relay
Air Compressor

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Some vehicles may exhibit a check suspension lamp on with Diagnostic Trouble Codes (DTC’s) B2140 or C2140 even after the Air Suspension switch in the upper RH kick panel has been turned on. This may occur at pre-delivery, following suspension service, or after Air Suspension module replacement. This may be caused by the ride height calibration. ACTION Adjust and/or recalibrate ride height as necessary using the NGS (New Generation Star) Tester. Refer to the following Service Procedure for details. SERVICE PROCEDURE NOTE DURING PDI (PRE-DELIVERY INSPECTION) IF “CK SUSP” LIGHT IS ON, PRIOR TO SENDING TO SERVICE, VERIFY SWITCH IN UPPER RIGHT KICK PANEL IS ON. THIS SWITCH IS TURNED OFF DURING VEHICLE SHIPMENT TO PREVENT MODULE FROM SEEKING TRIM HEIGHT WHILE
SECURED DOWN FOR TRANSPORT.

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Cabriolet, Corrado, Fox, Golf GL/GTI, Jetta, Passat, Vanagon INTRODUCTION This article contains underhood views of vacuum hose routing. Use these vacuum diagrams during the visual inspection of F – BASIC TESTING article. This will assist in identifying improperly routed vacuum hoses which cause driveability and/or computer-indicated malfunctions. Fig. 1: Fox Vacuum Diagram Fig. 6: Cabriolet Canister-to-Intake Manifold Vacuum Diagram Fig. 7: Canister-to-Intake Manifold Vacuum Diagram (CIS–E Motronic System)

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ISSUE Some 2003-2006 Expedition and Navigator vehicles equipped with an air suspension may exhibit an air suspension height sensor linkage arm disengaging from the suspension ball stud or height sensor rotating arm. This concern typically occurs with the rear sensor (Figure 1) but may occur with the front sensors as well. If this occurs, the symptom will typically be the vehicle leaning to one side, the vehicle sitting too low/high, a harsh ride, and/or an inoperative air suspension. In addition, this concern may result in diagnostic trouble code (DTC) C1725 (air suspension front pneumatic failure) or C1726 (air suspension rear pneumatic failure). ACTION When a linkage arm becomes disengaged, do not re-attach the arm and do not replace the sensor unless broken. Instead, install a revised linkage arm on all three (3) sensor assemblies, even if they have not detached from the ball stud.Refer to the following Service Procedure. SERVICE PROCEDURE NOTE IF THE SENSOR ASSEMBLY NEEDS TO BE REPLACED FOR ANY DAMAGE/FAILURE OTHER THAN THE ONE DESCRIBED IN THIS TSB, THE REPLACEMENT ASSEMBLY IS SUPPLIED WITH A NEW STYLE LINKAGE ARM, SO THERE IS NO NEED TO ORDER ADDITIONAL LINKAGES FOR THE SERVICE REPAIR. 1. Replace linkage arms on all three (3) sensor assemblies following Workshop Manual (WSM), Section 204-05. 2. Discard the old linkage arms.