Where Is the Evaporator Temperature Sensor on Nsx
B1946 code definition
The B1946 code is a manufacturer special body write in code correlate the mood control system. In this case, the railway locomotive control module (ECM) has detected a failure in the evaporator temperature sensor for the climate control system operating theatre A/C .
What the B1946 code means
A code B1946 will be stored when the ECM detects a voltage sign from the post evaporator sensor that is signalling a unsuccessful person (the signal should be approximately 5 volts depending happening 1991 Acura NSX make and model).
Subordinate formula operation, the LH and Hypothalamic releasing facto discharge temperature sensors receive a ground from the Three-fold Automatic Temperature Control (DATC) module. The evaporator run temperature sensor receives a ground from the DATC mental faculty. A 5-volt quotation voltage is supplied to the Interstitial cell-stimulating hormone and RH discharge temperature sensors from the DATC mental faculty. A 5- V reference point voltage is supplied to the evaporator discharge temperature sensing element from the DATC mental faculty.
What causes the B1946 code?
Several problems may cause a B1946 code including:
- Malfunctioning, damaged, or defective evaporator temperature sensor
- Damaged or defective climate control unit
- An open or shorted racing circuit in the wiring rule between the climate control unit and evaporator temperature sensor
What are the symptoms of the B1946 code?
Symptoms of a B1946 code may include:
- Check engine or warning light may illuminate
- Mood control or A/C may non blow cold vent
- Climate control operating room A/C may not work at all
- There may be no symptoms else than a stored B1946 code
How does a car-mechanic diagnose the B1946 code?
A auto-mechanic may use several methods to diagnose a B1946 unhinge code, including:
- Use an OBD-Deuce scanner to check for a stored B1946 distract code
- Visually visit wiring and physical phenomenon components coreferent the evaporator temperature sensor for signs of harm
- Visually scrutinise the evaporator temperature sensor for signs of damage
- Screen the resistance connected the evaporator temperature sensor (resistance should be measured compared with temperature ranges)
- Check the DATC detector output potential difference (it should be betwixt 4.7 and 5.1 volts)
- Disconnect clime control unit and evaporator temperature sensor connector and check for an open circuit that has to a lesser degree 5 ohms resistance
- Check return circuit for an open or short circuit
- Check reference circuit for a short to ground
- Check reference circuits for a short to the restoration circuits
How serious is the B1946 code?
Because a 1991 Acura NSX 's safe driving operation most likely leave not be impacted due to faults that entrepot a B1946 code, this code is not thoughtful to be a serious code. When this code appears, IT is recommended to take your 1991 Acura NSX to your local service center or machinist for repair and diagnosis as before long as possible.
What repairs can fix the B1946 code?
Several repairs can fix a B1946 incommode code and include:
- Repair Oregon replace damaged or shorted electrical wiring and related components
- Replace the damaged or defective evaporator temperature sensing element
- Substitute damaged or defective DATC building block
- Shining all codes, try-drive your 1991 Acura NSX , and rescan to see if any codes re-emerge
Additional information concerned a B1946 code
It is forever recommended to take all proper safety precautions when temporary with the electrical components of your 1991 Acura NSX and to cautiously take after overhaul instructions. With Thomas More complex physical phenomenon repairs, it is recommended to essay assistance from a professional.
In addition, note that the evaporator core, driver side heater core, and passenger side heater core drop air temperature sensors have the same diagnostic procedure.
Require help with a B1946 cypher?
OBD-II inconvenience codes B1946
SCHEDULE B1946 DIAGNOSTIC
Where Is the Evaporator Temperature Sensor on Nsx
Source: https://www.mycarspecs.com/da-dkk/obd2/acura/nsx/1991/base/b1946--climate-control-a-c-post-evaporator-sensor-circuit-failure
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