Suzuki SY413 Service Manual page 1971

7B-32 AUTOMATIC TRANSMISSION (3 A/T)
DTC P0751 SHIFT SOLENOID-A (No.1) PERFORMANCE OR STUCK OFF
DTC P0756 SHIFT SOLENOID-B (No.2) PERFORMANCE OR STUCK OFF
CIRCUIT DESCRIPTION
PCM monitors throttle opening, engine speed, vehicle speed and gear position and compares the actual engine
speed and its specified value (i.e., engine speed obtained by PCM through calculation using the throttle open-
ing/gear position and vehicle speed).
DTC DETECTING CONDITION
D While running in "D" range after engine warmed up,
engine speed as compared with vehicle speed is not
within acceptable range.
: 2 driving cycle detection logic, continuous
monitoring.
DTC CONFIRMATION PROCEDURE
WARNING:
D When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
D Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON and warm up engine to normal operating temperature.
3) Shift selector lever to "D" range.
4) Start vehicle and increase vehicle speed to 25 – 35 mile/h, 40 – 55 km/h by depressing accelerator pedal half
a stroke.
5) Keep vehicle at above speed for 5 sec. or longer.
6) Increase vehicle speed to 45 – 55 mile/h, 75 – 90 km/h by depressing accelerator pedal half a stroke and keep
it at that speed for 5 sec. or longer.
7) Stop vehicle and check pending DTC and DTC.
ACCEPTABLE RANGE
1st gear (solenoids ON and ON)
2nd gear
(solenoids ON and OFF)
Vehicle speed
D A/ T oil pressure control cable maladjusted
D Selector cable maladjusted
D Mechanical malfunction of shift solenoid valve
(stick or leakage)
D Mechanical malfunction in transmission
D Torque converter malfunction
3rd gear
(solenoids OFF and OFF)
POSSIBLE CAUSE