Suzuki WagonR+ RB310 Service Manual page 1433

7B-22 AUTOMATIC TRANSMISSION (4 A/T)
Engine brake test
WARNING:
Before test, make sure that there is no vehicle behind so as to pre-
vent rear-end collision.
1) While driving vehicle in 3rd gear of "D" range, shift select lever down to "2" range and check if engine brake
operates.
2) In the same way as in Step 1), check engine brake for operation when select lever is shifted down to "L"
range.
3) Engine brake should operate in above test.
Test result
Fails to operate when shifted down to "2"
range
Fails to operate when shifted down to "L"
range
"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, depress brake pedal and release parking brake.
3) Then, release brake pedal gradually and check that vehicle remains stationary.
4) Depress brake pedal and shift select lever to "N" range.
5) Then, release brake pedal gradually and check that vehicle moves.
WARNING:
Before test, check to make sure no one is around vehicle or
down on a slope and keep watchful for safety during test.
Test result
Vehicle moves at "P" range or
remains stationary at "N" range
Possible cause
• Defective shift switch
• 1st & 2nd brake defective
• Direct clutch defective
Possible cause
Defective parking lock pawl or
spring