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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 224 (Engine Control System (2GR-FKS) - Diagnostic Codes (07 Of 10)) >> SFI System >> DTC P0597-12: Thermostat Heater Control Circuit Short to Battery [06/2018 - 08/2021] >> Typical Enabling Conditions

Typical Enabling Conditions

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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 command to thermostat heater Off
(b) Current command to thermostat heater Off
2. Both of the following conditions are met (c) and (d)
(c) Last command to thermostat heater On
(d) Current command to thermostat heater On
Battery voltage 8 V or higher
Starter Off
Command to thermostat heater On
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