Index Subaru Subaru Impreza 3 / Impreza WRX / Impreza WRX STI - service repair manual 2008-2014 year
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AC(diag)-29 Diagnostic Procedure for Sensors HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) 8. Diagnostic Procedure for Sensors A: AMBIENT SENSOR TROUBLE SYMPTOM: • Fan speed is not switched when the fan dial is in AUTO position. • Failure related to the ambient sensor is indicated in self-diagnosis. WIRING DIAGRAM: Air conditioning system, auto A/C model <Ref. to WI-77, AUTO A/C MODEL, WIRING DIAGRAM, Air Con- Step Check Yes No 1 CHECK AMBIENT SENSOR. Is the ambient sensor operating Replace the ambi- 2 CHECK INPUT SIGNAL FOR AMBIENT SEN- Connector & terminal (F78) No. 2 (+) — No. 1 (–): Is the voltage approx. 5 V? I/F * 1 * 2 B361 B361 1 2 3 4 5 6 8 9 10 11 12 13 14 i77 1 2 3 4 5 6 7 8 9 10 i3 5 6 7 8 2 1 9 4 3 10 24 22 23 25 27 26 28 11 12 13 14 15 16 17 18 19 20 21 F108 1 2 3 8 10 4 11 12 13 14 15 16 5 6 7 17 18 i77 * 1 * 2 * 1 * 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 i10 i88 2 1 i3 B38 i10 24 27 23 26 1 2 F78 2 1 F78 14 13 10 11 F108 B361 20 19 i88 AC-02343 AUTO A/C CONTROL MODULE JOINT CONNECTOR AMBIENT SENSOR COMBINATION METER MICRO COMPUTER CAN TRANSCEIVER & RECEIVER CAN JOINT CONNECTOR : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 6, 7, 8, 9 AND 10 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4 AND 5 |