CHARGING SYSTEM > TERMINALS OF ECU

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CHARGING SYSTEM

A197743E01

HINT:
The standard voltage between each pair of the power management control ECU terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated.
The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the Specified Condition column.
The illustration above can be used as a reference to identify the power management control ECU terminal locations.


Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
D37-14 (RLO) - D39-12 (GND)
G - W-B
Generator
After engine warmed up, during charging control, vehicle driven at constant speed
Pulse generation (see waveform 1)
After engine warmed up, during charging control, vehicle accelerated
Pulse generation (see waveform 2)
After engine warmed up, during charging control, vehicle decelerated
Pulse generation (see waveform 3)
D37-12 (VC) - D37-18 (E2)
W - LG
Power source of battery current sensor assembly
Ignition switch ON
4.5 to 5.5 V
D37-15 (THB) - D37-18 (E2)
SB - LG
Battery temperature sensor
Ignition switch ON
0.2 to 4.8 V
D37-13 (IB) - D37-18 (E2)
Y - LG
Battery current sensor
Ignition switch ON
0.2 to 4.8 V
D37-18 (E2) - Body ground
LG - Body ground
Sensor ground
Always
Below 1 Ω
D39-8 (AM21) - D39-12 (GND)
P - W-B
Battery power
Always
11 to 14 V
D39-1 (INH) - D39-12 (GND)
V - W-B
Windshield wiper switch assembly
Ignition switch ON
Windshield wiper switch "HI" position
11 to 14 V
D37-5 (STA) - D39-12 (GND)
L - W-B
Starter assembly
Cranking
5.5 V or more
D39-2 (IG2) - D39-12 (GND)
L - W-B
IG2 relay
Ignition switch ON
11 to 14 V
D39-9 (PNL) - D39-12 (GND)
G - W-B
PANEL fuse
Light control switch OFF → TAIL
Below 1 V → 11 to 14 V

C185499E05


Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
D36-10 (RLO) - D38-6 (GND)
G - W-B
Generator
After engine warmed up, during charging control, vehicle driven at constant speed
Pulse generation (see waveform 1)
After engine warmed up, during charging control, vehicle accelerated
Pulse generation (see waveform 2)
After engine warmed up, during charging control, vehicle decelerated
Pulse generation (see waveform 3)
D36-23 (VC) - D36-25 (E2)
W - LG
Power source of battery current sensor assembly
Ignition switch ON
4.5 to 5.5 V
D36-28 (THB) - D36-25 (E2)
SB - LG
Battery temperature sensor
Ignition switch ON
0.2 to 4.8 V
D36-30 (IB) - D36-25 (E2)
Y - LG
Battery current sensor
Ignition switch ON
0.2 to 4.8 V
D36-25 (E2) - Body ground
LG - Body ground
Sensor ground
Always
Below 1 Ω
D38-2 (AM21) - D38-6 (GND)
R - W-B
Battery power
Always
11 to 14 V
D38-1 (AM22) - D38-6 (GND)
L - W-B
Battery power
Always
11 to 14 V
D38-9 (INH) - D38-6 (GND)
V - W-B
Windshield wiper switch assembly
Ignition switch ON
Windshield wiper switch "HI" position
11 to 14 V
D36-2 (STA) - D38-6 (GND)
L - W-B
Starter assembly
Cranking
5.5 V or more
D38-27 (PNL) - D38-6 (GND)
G - W-B
PANEL fuse
Light control switch OFF → TAIL
Below 1 V → 11 to 14 V


    A084458E02

  1. WAVEFORM 1

    1. w/o Entry and Start System
      Generator 
      Tester Connection
      		Tool Setting
      		Vehicle Condition
      		Specified Condition
      D37-14 (RLO) - D39-12 (GND)
      		2 V/DIV., 50 msec./DIV.
      		After engine warmed up, during charging control, vehicle driven at constant speed
      		Correct waveform as shown in illustration

    2. w/ Entry and Start System
      Generator 
      Tester Connection
      		Tool Setting
      		Vehicle Condition
      		Specified Condition
      D36-10 (RLO) - D38-6 (GND)
      		2 V/DIV., 50 msec./DIV.
      		After engine warmed up, during charging control, vehicle driven at constant speed
      		Correct waveform as shown in illustration

      HINT:
      A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.



    2. A084456E02

  2. WAVEFORM 2

    1. w/o Entry and Start System
      Generator 
      Tester Connection
      		Tool Setting
      		Vehicle Condition
      		Specified Condition
      D37-14 (RLO) - D39-12 (GND)
      		2 V/DIV., 50 msec./DIV.
      		After engine warmed up, during charging control, vehicle accelerated
      		Correct waveform as shown in illustration

    2. w/ Entry and Start System
      Generator 
      Tester Connection
      		Tool Setting
      		Vehicle Condition
      		Specified Condition
      D36-10 (RLO) - D38-6 (GND)
      		2 V/DIV., 50 msec./DIV.
      		After engine warmed up, during charging control, vehicle accelerated
      		Correct waveform as shown in illustration

      HINT:
      A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.



    3. A084457E02

  3. WAVEFORM 3

    1. w/o Entry and Start System
      Generator 
      Tester Connection
      		Tool Setting
      		Vehicle Condition
      		Specified Condition
      D37-14 (RLO) - D39-12 (GND)
      		2 V/DIV., 50 msec./DIV.
      		After engine warmed up, during charging control, vehicle decelerated
      		Correct waveform as shown in illustration

    2. w/ Entry and Start System
      Generator 
      Tester Connection
      		Tool Setting
      		Vehicle Condition
      		Specified Condition
      D36-10 (RLO) - D38-6 (GND)
      		2 V/DIV., 50 msec./DIV.
      		After engine warmed up, during charging control, vehicle decelerated
      		Correct waveform as shown in illustration

      HINT:
      A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.