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Ecu Terminal Check

COLUMN ECU PIN VOLTAGE CHECK

Terminal No. (1) Circuit Description Test Condition Value
1 B+ Always Battery Voltage
2 Data Request Signal Input Always 0-12 Volts (Pulse)
3 Multiplex Communication Line Always 0-12 Volts (Pulse)
4 Ground Always No Voltage
6 Wiper Switch Intermittent (2) 0-2.5 Volts
8 Wiper Switch Backup Output Wiper Switch Low Or High Speed Position (3)
9 Ignition Power Source (IG1) Ignition On Battery Voltage
10 Headlight Switch Backup Output Ignition & Headlight Switch On No Voltage
(1) See Figure .
(2) Ignition switch in ACC and wiper intermittent switch rotated from long to short interval position.
(3) No voltage when wiper motor operates, battery voltage when wiper motor does not operate.
NOTE: Since ETACS ECU is mounted directly to junction block, measurement for junction block connector C319 terminals is impossible. Terminals No. 1-20 are listed for reference only. See Figure for connector locations. See Figure and Figure for terminal locations.
ETACS ECU PIN VOLTAGE CHECK

Terminal No. (1) Circuit Description Test Condition Value
1 Power Window Relay Output When Power Window Can Be Operated Battery Voltage
2 B+ For Power Door Locks Always Battery Voltage
3 Ground Always No Voltage
4 Ignition Switch Power Source (ACC) Ignition Switch In ACC Battery Voltage
5 Dome Light Output When Interior Lights Are On 2 Volts Or Less
6 Power Supply To Dome Light Always (When Interior Light Shutoff Function Is Not Operating) Battery Voltage
8 Ignition Switch Power Source (IG1) Ignition Switch On Battery Voltage
9 Right Turn Signal Output Right Turn Signal On Battery Voltage
10 Driver's Door Switch Signal Input Driver's Door Open No Voltage
11 B+ For Turn Signals Always Battery Voltage
12 Door Lock Output When Doors Locks Are Locking Battery Voltage
13 Door Unlock Output (Passenger's Door) When Passenger's Door Lock Is Unlocking Battery Voltage
..... Door Unlock Output When Doors Locks Are Unlocking Battery Voltage
14 Left Turn Signal Output Left Turn Signal On Battery Voltage
18 Ignition Switch Power Source (ACC) Ignition Switch In ACC Battery Voltage
20 B+ For ECU Always Battery Voltage
21 Driver's Seat Belt Switch Signal Input Driver's Seat Belt Switch On (Seat Belt Unfastened) No Voltage
22 Door Lock Output (Driver's Door) When Driver's Door Lock Is Unlocking Battery Voltage
24 Low Fuel Indicator Signal Input Low Fuel Indicator Is On 2 Volts Or Less
25 Door Switches Signal Input Either Door open No Voltage
27 Trunk Lid Latch Switch Signal Input Trunk Lid Open No Voltage
30 Key In Reminder Signal Input Ignition Key Removed No Voltage
31 Passenger's Door Key Switch Unlock Signal Input Passenger's Door Key Switch In Unlock Position No Voltage
32 Trunk Lid Opener Output Trunk Lid Opener Actuator Is Operating Battery Voltage
33 Driver's Door Key Switch Lock Signal Input Driver's Door Key Switch In Lock Position No Voltage
34 Driver's Door Key Switch Unlock Signal Input Driver's Door Key Switch In Unlock Position No Voltage
35 Driver's Door Lock Switch Lock Signal Input Driver's Door Lock Switch In Lock Position No Voltage
36 Driver's Door Lock Switch Unlock Signal Input Driver's Door Lock Switch In Unlock Position No Voltage
38 Ground Always No Voltage
40 Anti-Theft Horn Output Anti-Theft Horn Is On 2 Volts Or Less
42 Door Key Switch Lock Signal Input Driver's Or Passenger's Door Key Switch In Lock Position No Voltage
43 Passenger's Door Lock Switch Unlock Signal Input Passenger's Door Lock Switch In Unlock Position No Voltage
51 Diagnosis Output To DLC Or Input Signal Check Output When Diagnosis Is Output 0-12 Volts (Pulse)
..... ..... When Input Signal Check Is Output 0, 12 Volts (When Pulse Signal Changes)
52 Trunk Light Output When Trunk Light Is Illuminating Battery Voltage
53 Door Ajar Indicator Output When Door Ajar Indicator Is On Battery Voltage
54 Fog Light Switch Signal Input Fog Light Switch ON (When Switch Is Depressed) No Voltage
55 Hazard Warning Light Switch Signal Input Hazard Warning Light Switch On No Voltage
56 Ground (For Sensor) Always No Voltage
59 Multiplex Communication Line Always 0-12 Volts (Pulse)
62 Trunk Lid Key Switch Signal Input Trunk Lid Key Switch In Unlock Position No Voltage
63 Vehicle Speed Sensor Signal Input When Vehicle Is Moving 0-12 Volts (Pulse)
65 Passenger's Door Lock Switch UnLock Signal Input Passenger's Door Lock Switch In Lock Position No Voltage
66 Wiper Intermittent Adjustment Signal Input (2) 0-2.5 Volts
67 Diagnosis Indication Selection Signal Input When Scan Tool Is Connected To DLC No Voltage
68 Data Request Signal Output Always 0-12 Volts (Pulse)
70 Low Washer Indicator Output Signal Washer Fluid Level Low 2 Volts Or Less
71 Power Supply To Interior Light Always (When Interior Light Shutoff Function Is Not Operating) Battery Voltage
72 High Beam Indicator Light Output When High Beam Indicator Light Is Illuminating 2 Volts Or Less
73 Seat Belt Warning Light Output When Seat Belt Warning Light Is ON 2 Volts Or Less
74 Anti-Theft Indicator Output Anti-Theft Indicator Is On 2 Volts Or Less
(1) See Figure and Figure .
(2) Ignition switch in ACC and wiper intermittent switch rotated from long to short interval position.
NOTE: Since front ECU is mounted directly to relay box, measurement of connector terminals is impossible. Terminals and values are listed for reference only. For terminal locations, see Figure and Figure .
FRONT ECU PIN VOLTAGE CHECK

Terminal No. (1) Circuit Description Test Condition Value
2 Headlight High Output High Beam Headlights On Battery Voltage
3 & 4 Power Supply For Headlights Always Battery Voltage
5 Power Supply For Taillights Always Battery Voltage
6 Headlight Low Output Low Beam Headlights On Battery Voltage
7 Power Supply For Front ECU Always Battery Voltage
8 Taillight Relay Output Taillights On Battery Voltage
21 Wiper/Washer Output Wiper/Washer Operated Battery Voltage
22 Multiplex Communication Line Always 0-12 Volts (Pulse)
23 Wiper Auto Stop Input Wiper Switch In High Or Low Position Battery Voltage
24 Ignition Switch Power Source (ACC) Ignition In ACC Battery Voltage
25 Headlight Switch Backup Input Headlight Switch On (Any Position) No Voltage
26 Wiper Switch Backup Input Wiper Switch In High Or Low Position No Voltage
27 Wiper High Output Wiper Switch In High Position Battery Voltage
28 Wiper Low Output Wiper Switch In Low Position Battery Voltage
30 Ignition Switch Power Source (IG2) Ignition On Battery Voltage
31 Ground Always No Voltage
(1) See Figure and Figure .
SUN ROOF ECU PIN VOLTAGE CHECK

Terminal No. (1) Circuit Description Test Condition Value
1 Sun Roof Motor B+ Always Battery Voltage
2 Ignition Switch Power Source (IG2) Ignition On Battery Voltage
3 ECU B+ Always Battery Voltage
5 Ground Always No Voltage
6 Sun Roof Switch Close/Tilt Down Signal Sun Roof Switch Close/Tilt Down Position No Voltage
8 Sun Roof Switch Open/Tilt Up Signal Sun Roof Switch Open/Tilt Up Position No Voltage
9 Ground Always No Voltage
10 Multiplex Communication Line Always 0-12 Volts (Pulse)
(1) See Figure .
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