Special Testing Procedures
The special tests are designed to aid the technician in diagnosing the hydraulic and mechanical portions of the transmission.
Engine Idle Speed Check
Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual for diagnosis and testing of the engine idle speed.
Line Pressure Test
CAUTION: Carry out the Line Pressure Test prior to carrying out the Stall Speed Test. If line pressure is low at stall, do not carry out the Stall Speed
Test or further transmission damage will occur. Do not maintain wide-open throttle in any transmission range for more than 5 seconds or transmission
damage may occur.
NOTE: If the Transmission Tester is installed, it must be removed prior to carrying out the test.
NOTE: Carry out shift linkage check prior to carrying out this test. Refer to Section 307-05.
This test verifies the line pressure is within specifications.
1. Connect the Pressure Gauge to the line pressure tap.
Start the engine and check the line pressures. Refer to the Line Pressure Chart to determine if the line pressure is within specification.
INSTALL a new solenoid and/or body. REFER to Diagnostic Trouble Code Charts in this section for code description. GO to F2 .
F2 TRANSMISSION DRIVE CYCLE TEST
Carry out transmission drive cycle test; refer to Transmission Drive Cycle Test in this section.
Does the vehicle upshift and downshift OK?
Yes
GO to F3.
No
REFER to Diagnosis By Symptom in this section to diagnose shift concerns.
F3 RETRIEVE DTCS
Carry out KOEO test until continuous DTCs have been displayed.
Are DTCs P1714, P1715, and P1740 still present?
Yes
INSTALL a new PCM. ROAD TEST and RERUN Quick Test.
No
Testing completed. If a concern still exists, REFER to Diagnosis By Symptom in this section for concern diagnosis.
Item Part Number Description
1 — Line Pressure Tap
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