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AC-40 HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) DIAGNOSTICS FOR A/C SYSTEM FAILURE (RHD MODEL) 7 CHECK HARNESS BETWEEN BLOWER module. 2) Measure resistance between blower fan motor relay and A/C control module har- Connector & terminal (B50) No. 3 — (i49) No. 3: Is the measured value less than the speci- 1 Ω Repair harness 8 CHECK UNDER AUTO MODE. nected connectors. 2) Start the engine and turn the A/C switch to ON. 3) Select AUTO mode. Does change the blower fan speed? Blower fan speed changes. Blower fan is OK. 9 CHECK FOR POOR CONTACT. There is no poor contact. Replace A/C con- Repair poor con- Step Value Yes No |