Group 36 Vehicle Control Unit, Fault Tracing PSID “MID 144 PSID 1 Retarder Control Set Switch”, page 14 “MID 144 PSID 2 Idle Validation Switch page 14 “MID 144 PSID 4 Engine Brake Stalk Lever”, page 15 “MID 144 PSID 8 Neutral Position Error”, page 15 “MID 144 PSID 16 Power Relay page 15 “MID 144 PSID 20 Power Take-off Signal”, page 15 “MID 144 PSID 23 Air Dryer, Regenerating”, page 16 “MID 144 PSID 24 Compressor, Control”, page 16 “MID 144 PSID 25 Air Leakage”, page 16 “MID 144 PSID 200 Communication Interference, Data Link, Engine Control Module (ECM)”, page 16 “MID 144 PSID 202 Communication Interference, Data Link, Instrumentation”, page 17 “MID 144 PSID 204 Communication Interference, Data Link, Brake Control Module”, page 17 “MID 144 PSID 205 Communication Interference, Data Link, Transmission Control Module”, page 17 “MID 144 PSID 206 Communication Interference, Data Link, Retarder Control Module”, page 17 “MID 144 PSID 207 Communication Interference, Data Link, Gear Selector Control Module”, page 17 “MID 144 PSID 208 Communication Interference, Data Link, Air Suspension”, page 18 “MID 144 PSID 210 SAE J1939 Data Link Interruption, Lighting Control Module (LCM)”, page 18 “MID 144 PSID 211 SAE J1939 Data Link Interruption, Collision Avoidance Control Module”, page 18 “MID 144 PSID 214 Data Link, Bodybuilder Control Module”, page 18 “MID 144 PSID 230 Software Fault”, page 18 6