Toyota Camry Manual page 120

AUTOMATIC TRANSAXLE –
CHECK TERMINAL TT OUTPUT VOLTAGE
When a voltmeter is connected to the DLC2, the
following items can be checked:
1. Throttle position sensor signal
2. Brake signal
3. Shift position signal
1. VOLTMETER CONNECTION
Connect the positive (+) probe of the voltmeter to
terminal Tt and the negative (–) probe to terminal E1
of the DLC2.
HINT: If a voltmeter with small internal resistance is
used, the correct voltage will not be indicated, so use
a voltmeter with an internal resistance of at least 10 k
W.
2. TURN IGNITION SWITCH TO ON (DO NOT START
THE ENGINE)
3. CHECK THROTTLE POSITION SENSOR SIGNAL
Check if the voltage changes from approximately 0 V
to approximately 8 V when the accelerator pedal is
gradually depressed from the fully closed position.
4. CHECK BRAKE SIGNAL (LOCK–UP CUT SIGNAL)
(a) Open the throttle valve fully to apply approximately 8
V to terminal Tt.
(b) In this condition, check terminal Tr voltage when the
brake pedal is depressed and released.
Tt terminal voltage:
0 V (When brake pedal is depressed)
8 V (When brake pedal is released)
5: START ENGINE
6. CHECK SHIFT POSITION SIGNAL
(VEHICLE SPEED ABOVE 10 KM/H OR 6 MPH)
Check up–shifting together with terminal TT voltage.
HINT: Check for light shocks from up–shifting and
for changes in the tachometer.
Gear Position
2nd Lock–up
3rd Lock–up
0/D Lock–up
If terminal TT output voltage check cannot be perfo–
rmed, check TT terminal circuit on page AX1–112.
TROUBLESHOOTING
1 st Gear
2nd Gear
3rd Gear
O/D
AX1–47
Terminal TT output voltage
Below 0.5 V
1.5–2.6 V
2.5–3.6 V
3.5–4.6 V
4.5–5.6 V
5.5–6.6 V
6.5–7.6 V