Power Relay Control Circuit High

When the relay is off no power is supplied to the solenoid pack and the transmission is in limp in mode.

Power relay control circuit high.

It is referred to as the transmission control relay output circuit or switched battery. When the relay is off no power is supplied to the solenoid pack and the transmission is in limp in mode. The circuit that powers the electromagnet s coil is completely separate from the circuit that is switched on or off by the relay s switch so it s possible to use a relay whose coil requires just a few volts to turn a line voltage circuit on or off. If a defective control module is suspected the better option would be to refer the application to the dealer or other competent repair facility for professional diagnosis and repair.

The pcm powertrain control module also known as ecm or engine control module in other vehicle makes comes with a power relay that provides battery voltage safely to the right pcm circuits. The powertrain relay is a normally open relay. Codes related to p0685. That may include but is not limited to vehicles from hyundai kia smart jeep dodge ford dodge chrysler etc.

Battery positive voltage is supplied. It s a contact type relay activated with a signal wire from the ignition switch. In most cases when the pcm stores a p0687 code it s because it has detected overly high voltage from its power supply. Obd ii fault code p0887 is a generic code that is defined as transmission control module tcm power relay control circuit high and is set when the pcm powertrain control module detects an abnormally high voltage or any voltage at all from the relay that supplies the shift solenoids with power when the transmission is operating normally.

What does that mean. Learn what engine control module power relay control circuit high means location and how to repair. What does p0887 mean. The relay output is fed back to the powertrain control module.

This diagnostic trouble code dtc is a generic powertrain code and applies to many obd ii vehicles 1996 newer. It is referred to as the transmission control relay output circuit or switched battery. The relay output is fed back to the powertrain control module. Ecm pcm power relay control circuit high.

The relay armature is held in the open position by spring tension. Although generic the engines differ between brands and may have slightly different causes for this code. What the p0687 code means. Tcm power relay control circuit high.

A p0687 code is stored when the pcm powertrain control module detects an incorrect abnormal or erratic voltage reading from the relay control circuit that supplies it with its power.