A/T-ECU TERMINAL VOLTAGE REGERENCE CHART




Terminal No.
 Check item
 Inspection condition
 Standard value
1
 Underdrive solenoid valve
  • Engine: Idling
  • Gear range: 1st gear

 System voltage

  • Engine: Idling
  • Selector lever position: P

 6 - 9 V
2
 Solenoid valve power supply
 Ignition switch: LOCK (OFF)
 1 V or less
Ignition switch: ON
 System voltage
3
 Solenoid valve power supply
 Ignition switch: LOCK (OFF)
 1 V or less
Ignition switch: ON
 System voltage
4
 Shift indicator C <5A/T>
 Refer to the notes in the margin.*
 -
5
 Shift indicator A <5A/T>
 Refer to the notes in the margin.*
 -
7
 A/T fluid temperature warning lamp
 Ignition switch: ON
 1 V or less to system voltage (after several seconds have elapsed)
9
 4LLc switch
 Ignition switch: ON
Transfer lever: 4L <Vehicles with easy select 4WD> or 4LLc <Vehicles with super select 4WD>
 1 V or less
Ignition switch: ON
Transfer lever: Other than the above
 System voltage
11
 Power supply voltage
 Always
 System voltage
12
 Earth
 Always
 1 V or less
13
 Earth
 Always
 1 V or less
14
 Overdrive solenoid valve
  • Engine: Idling
  • Gear range: 3rd gear

 System voltage

  • Engine: Idling
  • Selector lever position: P

 6 - 9 V
15
 Damper clutch control solenoid valve
  • Engine: Idling
  • Selector lever position: P

 System voltage
16
 Second solenoid valve
  • Engine: Idling
  • Gear range: 2nd gear

 System voltage

  • Engine: Idling
  • Selector lever position: P

 6 - 9 V
17
 Shift indicator B <5A/T>
 Refer to the notes in the margin.*
 -
20
 Ignition switch
 Ignition switch: LOCK (OFF)
 1 V or less
Ignition switch: LOCK (OFF) to ON
 System voltage to 1 V or less (after several seconds have elapsed)
24
 Power supply
 Always
 System voltage
25
 Earth
 Always
 1 V or less
26
 Earth
 Always
 1 V or less
31
 Input shaft speed sensor
  • Measure between terminals 31 and 43 with an oscilloscope.
  • Engine: 2,000 r/min
  • Gear range: 3rd gear <4A/T>, 4th gear <5A/T>

 Refer to , Inspection Procedure Using an Oscilloscope.
32
 Output shaft speed sensor
  • Measure between terminals 32 and 43 with an oscilloscope.
  • Engine: 2,000 r/min
  • Selector lever position: 3rd gear <4A/T>, 4th gear <5A/T>

 Refer to , Inspection Procedure Using an Oscilloscope.
38
 Backup power supply
 Always
 System voltage
43
 Sensor earth
 Always
 1 V or less
44
 A/T fluid temperature sensor
 A/T fluid temperature: 20°C
 3.8 - 4.0 V
A/T fluid temperature: 40°C
 3.2 - 3.4 V
A/T fluid temperature: 80°C
 1.7 - 1.9 V
51
 Reduction solenoid valve <5A/T>
  • Engine: Idling
  • Gear range: 5th gear

 System voltage

  • Engine: Idling
  • Selector lever position: P

 6 - 9 V
55
 Inhibitor switch: P
  • Ignition switch: ON
  • Selector lever position: P

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
56
 Inhibitor switch: N
  • Ignition switch: ON
  • Selector lever position: N

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
57
 Overdrive switch <4A/T>
  • Ignition switch: ON
  • Overdrive switch: OFF

 1 V or less

  • Ignition switch: ON
  • Overdrive switch: ON

 System voltage
Select switch <5A/T>
  • Ignition switch: ON
  • Selector lever position: Sport mode

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
58
 Inhibitor switch: L <4A/T>
  • Ignition switch: ON
  • Selector lever position: L

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
Shift switch (Down) <5A/T>
  • Ignition switch: ON
  • Selector lever operation: Downshift and hold the selector lever

 System voltage

  • Ignition switch: ON
  • Selector lever operation: Other than above

 1 V or less
62
 Low-reverse solenoid valve
  • Engine: Idling
  • Selector lever position: P

 System voltage

  • Engine: Idling
  • Gear range: 2nd gear

 6 - 9 V
66
 Inhibitor switch: R
  • Ignition switch: ON
  • Selector lever position: R

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
67
 Inhibitor switch: D
  • Ignition switch: ON
  • Selector lever position: D

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
68
 Inhibitor switch: 2 <4A/T>
  • Ignition switch: ON
  • Selector lever position: 2

 System voltage

  • Ignition switch: ON
  • Selector lever position: Other than above

 1 V or less
Shift switch (Up) <5A/T>
  • Ignition switch: ON
  • Selector lever operation: Upshift and hold the selector lever

 System voltage

  • Ignition switch: ON
  • Selector lever operation: Other than above

 1 V or less
69
 Vehicle speed sensor <2WD>
  • Measure between terminals 69 and body earth with an oscilloscope.
  • Engine: 2,000 r/min
  • Gear range: 3rd gear

 Refer to , Inspection Procedure Using an Oscilloscope.
71
 A/T control relay
 Ignition switch: OFF
 1 V or less
Ignition switch: ON
 System voltage to 1 V or less (after several seconds have elapsed)
72
 Earth
 Always
 1 V or less
note *: Using M.U.T.-III actuator function, check that the terminal voltage when the shift indicator is illuminated is as follows.
Terminal No.
 5
 17
 4
Check item
 Shift indicator A
 Shift indicator B
 Shift indicator C
Shift indicator
 1
 9 V
 0 V
 0 V
2
 0 V
 9 V
 0 V
3
 9 V
 9 V
 0 V
4
 0 V
 0 V
 9 V
5
 9 V
 0 V
 9 V