Specifications
AUTOMATIC TRANSMISSION -
Troubleshooting
23-15
INSPECTION PROCEDURES FOR DIAGNOSIS CODES
Code No. 11, 12, 14 Throttle position sensor system
<Vehicles without TCL>, accelerator pedal position
sensor <Vehicles with TCL>
Probable cause
If the TPS or APS output voltage is 4.8 V or higher when the engine is idling, the
output is judged to be too high and diagnosis code No. 11 is output. Code No. 1 1
is also output if there is a problem with the APS and an APS fail-safe signal is received
from the TCL-ECU. If the TPS or APS output voltage is 0.2 V or lower at times
other than when the engine is idling, the output is judged to be too low and diagnosis
code No. 12 is output. If the TPS or APS output voltage is 0.2 V or lower or if it
is 1.2 V or higher when the engine is idling, the TPS or APS adjustment is judged
to be incorrect and diagnosis code No. 14 is output.
D Malfunction of the throttle position sensor <Vehicles
without TCL>
D Malfunction of the accelerator pedal position sensor
<Vehicles with TCL>
D Malfunction of connector
D Malfunction of the A/T-ECU
Throttle position sensor check <Vehicles without TCL>
(Refer to GROUP 13A - On-vehicle Service.)
Accelerator pedal position sensor check<Vehicles with TCL>
(Refer to GROUP 13H - On-vehicle Service.)
NG
Replace
OK
Check the following connectors:
B-07 <Vehicles without TCL>, B-41 <Vehicles with TCL>, C-29
NG
Repair
OK
Harness check
D Between throttle position sensor and A/T-ECU
<Vehicles without TCL>
D Between accelerator pedal position sensor and A/T-ECU
<Vehicles with TCL>
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the A/T-ECU.
Code No. 15 Oil temperature sensor system Probale cause
If the oil temperature sensor output voltage is 2.6 V or more even after driving for
10 minutes or more (if the oil temperature does not increase), it is judged that there
is an open circuit in the oil temperature sensor and diagnosis code No. 15 is output.
D Malfunction of the oil temperature sensor
D Malfunction of connector
D Malfunction of the A/T-ECU
Oil temperature sensor check (Refer to P.23-52.)
NG
Replace
OK
Check the follwing connectors:
B-70, C-29
NG
Repair
OK
Harness check
D Between oi l temperature sensor and A/T-ECU
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the A/T-ECU.