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3. CHECK (C105) HVAC MUX CONTROL CIRCUIT FOR AN OPEN Measure the resistance of the (C105) HVAC MUX Control circuit Is the resistance below 5.0 ohms? Yes >> Replace the Instrument Cluster (CCN) in accordance with the Service Information. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 ELECTRICAL/ELECTRONIC CONTROL MODULES/ FRONT CONTROL MODULE - DIAGNOSIS AND TEST- No >> Repair the (C105) HVAC MUX Control circuit for an open. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 ELECTRICAL/ELECTRONIC CONTROL MODULES/ FRONT CONTROL MODULE - DIAGNOSIS AND TEST- 75–AC REQUEST OUTPUT SIGNAL HIGH WHEN DRIVEN LOW (MTC) For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC Refer to 73–AC REQUEST OUTPUT SIGNAL TOO HIGH for the diagnostic test procedure. 76–AC REQUEST OUTPUT SIGNAL LOW WHEN DRIVEN HIGH (MTC) For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC Refer to 74–AC REQUEST OUTPUT SIGNAL TOO LOW for the diagnostic test procedure. 24 - 138 HVAC - ELECTRICAL DIAGNOSTICS LX |