Auto pilot system (APS) diagnosis troubleshooting · ad8261p5000c · Mercedes-Benz WIS

AD82.61-P-5000C

Auto pilot system (APS) diagnosis troubleshooting

13.5.98

MODEL 463 up to 30.6.99 with CODE (ET6) Auto pilot system (APS)

	To prevent damage to the control modules, couplings must only be disconnected or connected with "terminal 15R: OFF".
	When pushing in the radio and navigation operating unit (APS) (A2/29) do not press on the rotary transducers as these may become damaged. Use the frame of the display (left and right) as the pressure point when pushing the unit in.	Remove and reinstall the radio and navigation operating unit, APS	AR82.61-P-7412G
	The APS system must be calibrated to the tires fitted.
	Auto pilot system (APS) diagnosis, advanced information		AD82.61-P-2000C
a	Battery voltage 11–14 V
b	Fuses in order
	Troubleshooting
Complaint	Cause	Note	Remedy
Radio and navigation operating unit (APS) (A2/29) completely inoperative	Fuse in A2/29, voltage supply for A2/29		AD82.60-P-2000-07C AD82.61-P-6000-01C
No communication possible between Hand-Held Tester (HHT) and auto pilot system	Cables, radio and navigation operating unit (APS) (A2/29)		AD82.61-P-6000-04C
Navigation inoperative	Navigation CD-ROM is not inserted or is inserted incorrectly or incorrect CD-ROM Fuse in APS navigation processor (A2/30) Voltage supply for A2/30 CAN data bus	 CD-ROM is not upwards compatible Read out fault memory with HHT	Insert navigation CD, refer to: GF82.61-P-0001-03J AD82.61-P-2000-02C AD82.61-P-6000-02C AD82.61-P-4000C AD82.61-P-6000-05C
Navigation is defective	Navigation CD not is not inserted or is inserted incorrectly or incorrect CD-ROM Check variant coding and wheel calibration Global positioning system (GPS) APS navigation processor (A2/30) Reverse gear signal Wheel sensors	 CD-ROM is not upwards compatible Read out fault memory with HHT Read out actual value with HHT Read out actual values with HHT	Insert navigation CD, refer to: GF82.61-P-0001-03J AD82.61-P-4000C AD82.61-P-6000-06C AD42.30-P-1000BZ
Route guidance instructions are output too early or too late (e.g. "Please turn right")	Check wheel calibration		GF82.61-P-0001-03J
Audio response is fragmentary or inoperative	Language in RAM of APS navigation processor (A2/30) partly erased due to voltage open-circuit Cables, radio and navigation operating unit (APS) (A2/29), APS navigation processor (A2/30)	Test HHT menu item "Actuations, audio response"  Avoid severe vibrations at A2/30 when loading the language.	Reload language, refer to: GF82.61-P-0001-03J AD82.61-P-6000-03C
Display readout is difficult to read	Display contrast too slight		Adjust display contrast: GF82.61-P-0001-03J

Referenced documents

ad4230p1000bz Anti-lock brake system (ABS) diagnosis contents
ad8260p200007c Contact assignment radio with navigation operating unit
ad8261p200002c APS navigation computer connector assignment
ad8261p2000c Auto pilot system (APS) diagnosis previous knowledge
ad8261p4000c Auto pilot system (APS) diagnosis fault memory
ad8261p600001c APS test of electrical system radio and navigation operating unit voltage supply
ad8261p600002c APS test of electrical system navigation computer voltage supply
ad8261p600003c APS test of electrical system navigation computer language output
ad8261p600004c APS test of electrical system HHT interface
ad8261p600005c APS test of electrical system CAN bus test
ad8261p600006c APS test of electrical system reversing signal
ar8261p7412g Remove/install APS radio and navigation control unit
gf8261p000103j Auto-pilot system (APS), notes on operation