Dtc P0720 (Dtc No.75) Output Speed Sensor Circuit Malfunction - Suzuki GRAND VITARA XL-7 Owner's Manual

7B1-32 AUTOMATIC TRANSMISSION (4 A/T)

DTC P0720 (DTC NO.75) Output Speed Sensor Circuit Malfunction

WIRING DIAGRAM
1. PCM
2. Output shaft speed sensor
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
• With 4WD LOW switch OFF, no output shaft speed
sensor signal is inputted while vehicle speed sensor
signal are inputted,
or
• With 4WD LOW switch OFF, no output shaft speed
sensor signal is inputted while engine running at
higher than specified engine speed with "D" range.
(2 driving cycle detection logic)
DTC CONFIRMATION PROCEDURE
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool.
3) Start engine and shift transfer lever to "2H" or "4H" range.
4) Drive vehicle at 40 km/h (25 mile/h) or more for longer than 10 sec. (or higher than 3500 r/min engine speed
with "D" range for longer than 10 sec.)
5) Stop vehicle and check DTC and/or pending DTC.
TROUBLE AREA
• Output speed sensor or its circuit
• PCM