TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Connect a 0 - 2068 KPa (0 - 300 PSI) pressure gauge to the Overdrive Clutch test port.
Connect another 0 - 2068 KPa (0 - 300 PSI) pressure gauge to the Governor Pressure
test port.
Start the engine and allow the transmission temperature to rise to normal operating
temperature.
Caution: Apply the parking brake.
Place the gear selector in Drive.
While observing the pressure gauges, select 4th gear from Gov and 3-4 Shift Valve
Test with the DRBIII
t.
Note: The governor pressure should rise to above 138 KPa (20 PSI). Shortly
after this, the O/D pressure should rise to above 276 KPa (40 PSI).
Did the pressure act as described?
All
Yes
→
Go To
5
No
→
Go To
6
5
Turn the ignition off.
Remove the transmission oil pan and inspect for excessive debris and burnt oil.
Is the oil burnt or does the transmission oil pan contain excessive debris?
All
Yes
→
Repair the internal transmission problem in accordance with the
Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Go To
7
6
Turn the ignition off.
Replace 3-4 Shift Solenoid.
Connect a 0 - 2068 KPa (0 - 300 PSI) pressure gauge to the Overdrive Clutch test port.
Connect another 0 - 2068 KPa (0 - 300 PSI) pressure gauge to the Governor Pressure
test port.
Start the engine and allow the transmission temperature to reach normal operating
temperature.
Caution: Apply the parking brake.
Place the gear selector in Drive.
While observing the pressure gauges, actuate the 3-4 Shift Solenoid with the DRB.
Note: The governor pressure should rise to above 138 KPa (20 PSI). Shortly
after this, the O/D pressure should rise to above 276 KPa (40 PSI).
Did the pressure act as described?
All
Yes
→
Test Complete.
No
→
Overhaul the Transmission in accordance with the Service Infor-
mation. Pay extra attention to Seals and Clutches related to the
OD Clutch.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
300
TRANSMISSION
P0783-3-4 SHIFT SOL, NO RPM DROP AT LOCKUP —
Continued