HVAC

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PINPOINT TEST 27: DTCs U3003:16 AND 17 - HYBRID

See the Tribute Wiring Diagram for schematic information.
NOTE:DTC U3003 can be set if the vehicle has recently been jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.
NOTE:Carry out a thorough inspection and verification before proceeding with the pinpoint test. See - Initial Inspection and Diagnostic Overview.

Normal Operation

Under normal operation, the HVAC module received a ground through circuit (B/L). The HVAC module is supplied constant battery voltage through circuit (W/R).

- DTC U3003:16 (Control Module Input Power "A": Circuit Voltage Below Threshold) - The module senses when battery voltage is greater than 16 volts.
- DTC U3003:17 (Control Module Input Power "A": Circuit Voltage Above Threshold) - The module senses when battery voltage is less than 9 volts.

Possible Causes
- Wiring, terminals or connectors
- HVAC module

Diagnostic Procedure

Step 1-Step 4:

Step 5-Step 6: