Why does DTC p1635 set at the same time?
If DTC P1635 sets at the same time, this indicates that the 5.0 voltage reference circuit is either shorted to a ground or shorted to a voltage. The 5.0 volt reference circuit is internally connected within the PCM. The A/C Refrigerant Pressure sensor or the EGR valve may be causing this DTC to set. Refer to DTC P1635 for further diagnosis.
How to know if your car has a p1635 code?
Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost to diagnose the P1635 code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type.
What is the DTC of a MAP sensor?
When the manifold pressure is high (low vacuum) the sensor output voltage is high. The MAP sensor voltage (depending on altitude) can range from 1.0-1.5 volts at idle (high vacuum) to 4.0 – 4.9 volts at wide open throttle (low vacuum). When the PCM senses a signal voltage higher than the normal operating range of the sensor, this DTC sets.
How many volts does the Powertrain Control Module use?
The Powertrain Control Module ( PCM) uses a common 5.0 Volt Reference 1 circuit as a sensor feed. This circuit supplies 5 Volts to the following sensors: The Air Condition (A/C) Pressure sensor, the Manifold Absolute Pressure ( MAP) sensor, and the Engine Gas Recirculation ( EGR) valve.
When to set the p1635 code on the sensor?
The P1635 code is set when the reference voltage from the sensor is our of range.
How to test a DTC p1635 5 volt reference?
Turn ON the ignition leaving the engine OFF. Connect the DMM J 39200 to ground. Do any of the circuits measure greater than the specified value? Turn OFF the ignition. Connect the test lamp J 34142-B to B+. Turn ON the ignition leaving the engine OFF.
When does DTC set on reference 1 circuit?
The PCM monitors the voltage on the 5.0 Volt Reference 1 circuit. This DTC sets if the voltage is out of range. The ignition switch is in the RUN position. The 5.0 volt reference circuit is out of range.
What kind of reference circuit does the PCM use?
The PCM uses a common 5.0 Volt Reference 1 circuit as a sensor feed. This circuit supplies 5 Volts to the following sensors: The PCM monitors the voltage on the 5.0 Volt Reference 1 circuit.