On transmissions equipped with an electronic
pressure control (EPC) solenoid, if the line pressure is not
within specifications, the EPC pressure needs to be
checked. To do this, connect the pressure gauge to the
EPC tap. Start the engine and check EPC pressure, then
compare it to specifications. If the pressure is not within
specifications (Figure 40-16), follow the procedures for
testing the EPC. If the pressure is okay, there is a
mainline pressure problem.
On transmissions equipped with an electronic
pressure control (EPC) solenoid, if the line pressure is not
within specifications, the EPC pressure needs to be
checked. To do this, connect the pressure gauge to the
EPC tap. Start the engine and check EPC pressure, then
compare it to specifications. If the pressure is not within
specifications (Figure 40-16), follow the procedures for
testing the EPC. If the pressure is okay, there is a
mainline pressure problem.
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