DTC P0070-11: Ambient Temperature Sensor Circuit Short to Ground [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CLEAR DTC
Result:
NEXT
See step 2
- CHECK FOR DTC
Pre-procedure1
- Turn the ignition switch off.
- Disconnect the ambient temp. sensor (thermistor assembly) connector.
*1 Ambient Temp. Sensor (Thermistor Assembly) *2 Air Conditioning Amplifier Assembly - Turn the ignition switch to ON and wait for 4 seconds or more.
- Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
Result
Result Proceed to P0070-15 is output A P0070-11 is output B
Post-procedure1
- None
Result:
A
REPLACE AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY). Refer to REMOVAL [10/2022 - ]
Result:
B
See step 3
- CHECK HARNESS AND CONNECTOR (AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY) - AIR CONDITIONING AMPLIFIER ASSEMBLY)
Pre-procedure1
- Disconnect the A11 ambient temp. sensor (thermistor assembly) connector.
- Disconnect the C48 air conditioning amplifier assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result A11-2 (+) or C48-1 (TAM) - Other terminals and body ground Always 10 kΩ or higher kΩ A11-1 (-) or C48-14 (SG-2) - Other terminals and body ground Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None
Result:
OK
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to REMOVAL [10/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR