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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine Control System (A25A-FXS) (W/ Canister Pump Module) - Diagnostic Codes (07 Of 13)) >> SFI SYSTEM (w/ Canister Pump Module) >> DTC P0597-12: Thermostat Heater Control Circuit Short to Battery [02/2019 - 06/2020] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever the following DTCs are not stored None
All of the following conditions are met -
Either of the following conditions is met 1 or 2
1. Both of the following conditions are met (a) and (b)
(a) Last thermostat heater output terminal voltage level Low
(b) Current thermostat heater output terminal voltage level Low
2. Both of the following conditions are met (c) and (d)
(c) Last thermostat heater output terminal voltage level High
(d) Current thermostat heater output terminal voltage level High
Auxiliary battery voltage 8 V or higher
Command to thermostat heater On