DTC P16B5-11: Multi Flow Control Valve Sensor Circuit Short to Ground [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR
HINT:
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
- Disconnect the water control valve connector.
- Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition B69-2 (VCFC) - B69-3 (EFCV) Ignition switch ON 4.5 to 5.5 V B69-1 (FCV) - B69-3 (EFCV) Ignition switch ON 3.0 to 5.0 V - Turn the ignition switch off and wait for at least 30 seconds.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition B69-2 (VCFC) - B69-1 (FCV) Ignition switch off 190 to 210 kΩ Result
Proceed to OK NG
Result:
OK
REPLACE WATER CONTROL VALVE. Refer to REMOVAL [11/2021 - ]
Result:
NG
See step 2
- CHECK HARNESS AND CONNECTOR (WATER CONTROL VALVE - ECM)
- Disconnect the water control valve connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition B69-2 (VCFC) - B49-70 (VCFV) Always Below 1 Ω B69-1 (FCV) or B49-72 (FCA) - Body ground and other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [11/2021 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR