TROUBLE DIAGNOSES — Self-diagnosis (Cont'd) THROTTLE SENSOR CIRCUIT CHECK
AT-37flowchartA/T (Automatic Transmission) specific procedure. Throttle sensor shared with E.C.U. Terminals referenced are A/T control unit connector E117 pins 11 and 15.
Self-diagnosis (Cont'd) THROTTLE SENSOR CIRCUIT CHECK
THROTTLE SENSOR CIRCUIT CHECK
1
Perform self-diagnosis (Mode III) for engine control.
N.G.
Check throttle sensor circuit for engine control. — Refer to section EF & EC.
O.K.
2
CHECK INPUT SIGNAL.
1. [Turn ignition ON with engine off — connector illustrated]
2. Check voltage between A/T control unit terminals (11) and (15) while accelerator pedal is depressed slowly.
Voltage:
Fully-closed throttle: 0.2 - 0.6V
Fully-open throttle: 2.9 - 3.9V
(Voltage rises gradually in response to throttle valve opening.)
N.G.
Check harness continuity between E.C.U. and A/T control unit regarding throttle sensor circuit. (Main harness)
O.K.
3
Perform self-diagnosis again after driving for a while.
N.G.
1. Perform A/T control unit input/output signal inspection.
1. Perform A/T control unit input/output signal inspection.
2. If N.G., recheck A/T control unit pin terminals for damage or connection of A/T control unit harness connector.
O.K.
INSPECTION END
| Specification | Value |
|---|---|
| Throttle sensor voltage — Fully-closed throttleA/T control unit terminals 11 and 15, accelerator pedal fully closed | 0.2 - 0.6V |
| Throttle sensor voltage — Fully-open throttleA/T control unit terminals 11 and 15, accelerator pedal fully open | 2.9 - 3.9V |
Throttle sensor voltage — Fully-closed throttleA/T control unit terminals 11 and 15, accelerator pedal fully closed
0.2 - 0.6V
Throttle sensor voltage — Fully-open throttleA/T control unit terminals 11 and 15, accelerator pedal fully open
2.9 - 3.9V
NOTE
Voltage rises gradually in response to throttle valve opening.