Suzuki RA410, Manual

Page: 545 / 761

7B-18 AUTOMATIC TRANSMISSION
ROAD TEST
This test is to check if upshift and downshift take place at specified
speeds while actually driving vehicle on a level road.
WARNING:
Carry out the test in very little traffic area to prevent an ac-
cident.
The test requires 2 persons, a driver and a tester.
Condition Possible causes
No upshift from 1st to 2nd. 1 – 2 shift valve defective.
Shift solenoid A defective.
PCM defective, or
disconnection or poor
connection in PCM electric
circuit.
No upshift from 2nd to 3rd. 2 – 3 shift valve defective.
Shift solenoid B defective.
PCM defective, or
disconnection or poor
connection in PCM electric
circuit.
No downshift from 2nd to
1st or 3rd to 2nd. Throttle position sensor
defective.
PCM defective, or
disconnection or poor
connection in controller
electric circuit.
“P” RANGE TEST
1) Stop vehicle on a slope, shift select lever to P range and at the
same time apply parking brake.
2) After stopping engine, release parking brake lever gradually and
check that vehicle remains stationary.