A/T-ECU TERMINAL VOLTAGE REGERENCE CHART




Terminal No.
 Check item
 Inspection condition
 Standard value
1
 UD solenoid valve
  • Engine: Idling
  • Selector lever position: D (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
7
 A/T fluid temperature warning lamp
 Ignition switch: LOCK (OFF) to ON
 1 V or less to system voltage (after several seconds have elapsed)
9
 4LLc operation detection switch <4WD>
 Ignition switch: ON
Transfer lever: 4LLc
 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
  • Selector lever position: D (Overdrive switch: ON)

 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
  • Selector lever position: 2

 System voltage

  • Engine: Idling
  • Selector lever position: P

 6 - 9 V
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
  • Selector lever position: D (Overdrive switch: ON)

 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: D (Overdrive switch: ON)

 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
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
  • Ignition switch: ON
  • Overdrive switch: ON

 1 V or less

  • Ignition switch: ON
  • Overdrive switch: OFF

 System voltage
58
 Inhibitor switch: L
  • Ignition switch: ON
  • Selector lever position: L

 System voltage

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

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

 System voltage

  • Engine: Idling
  • Selector lever position: 2

 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
  • Ignition switch: ON
  • Selector lever position: 2

 System voltage

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

 1 V or less
69
 Vehicle speed sensor <2WD>
 Vehicle: Slowly moving forward
 Alternates between 0<=>Approx. 5 V
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