Line Pressure Test: Notes
WARNING:
If equipped with fire suppression system, refer to FIRE SUPPRESSION SYSTEM
for Important Safety Warnings.
CAUTION:
Carry out the Line Pressure Test prior to carrying out the Stall Speed Test. If the line pressure is low at stall, do not carry out Stall Speed Test or further transmission damage will occur. Do not maintain WOT in any transmission range for more than five seconds.
This test verifies that the line pressure is within specification.
- Connect pressure gauge to line pressure tap.
- Start engine and check line pressures. Refer to the LINE PRESSURE CHART to determine if line pressure is within specification.LINE PRESSURE SPECIFICATION CHART
Application Range Idle WOT EPC Line Pressure EPC Line Pressure All P, N 34-276 kPa (5-40 psi) 276-689 kPa (40-100 psi) N/A N/A OD, 2, 1 34-276 kPa (5-40 psi) 276-689 kPa (40-100 psi) 689-793 kPa (100-115 psi) 1,172-1,586 kPa (170-230 psi) R 172-207 kPa (25-30 psi) 689-862 kPa (100-125 psi) 586-655 kPa (85-95 psi) 1,124-2,068 kPa (250-300 psi) - Place the ignition switch in the OFF position. If line pressure is not within specification, check EPC pressure.
- Connect pressure gauge to EPC pressure tap.
- Start engine and check EPC pressure. Refer to the LINE PRESSURE CHART for specifications.
- If EPC pressure is not within specification, GO to PINPOINT TEST E to diagnose EPC operation. If EPC operation is OK, refer to the LINE PRESSURE DIAGNOSIS CHART for line pressure concern causes.