Quest Minivan GXE V6-2960cc 3.0L SOHC MFI (VG30E) (1997)
Control Valve Assembly: Testing and Inspection
Improper Lock-Up Operation
DESCRIPTION
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This is one of the items indicated by the MIL.
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This malfunction will not be detected while the O/D OFF indicator lamp is indicating another self-diagnosis malfunction.
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This malfunction is detected when the A/T does not shift into fourth gear position or the torque converter clutch does not lock up as instructed by
the A/T control unit. This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve
sticking, improper solenoid valve operation, malfunctioning oil pump or torque converter clutch, etc.
Diagnostic Trouble Code (DTC) confirmation procedure
After the repair, perform the following procedure to confirm that the malfunction is eliminated.
With Consult
(1) Start engine and warm up ATF.
(2) Select "SELF-DIAG RESULTS" mode for ECM with CONSULT
(3) Start vehicle with selector lever in "D" and throttle opening halfway. Check that vehicle runs through gear shift of D1 -> D2 -> D3 -> D4 -> D4
lock-up, in accordance with shift schedule. Refer to shift schedule.
OR