TERMINALS OF ECU
Text in Illustration
*a |
Component without harness connected (Skid Control ECU [Brake Actuator Assembly]) |
- |
- |
Terminal No. (Symbol) |
Terminal Description |
---|---|
1 (GND2) |
Pump motor ground |
2 |
- (Not used) |
3 (EXI)*1 |
4WD detection switch (Transfer shift actuator assembly) input |
A.D.D. position switch (Differential motor actuator assembly) signal input |
|
4 |
- (Not used) |
5 (EXI4)*1 |
L4 detection switch (Transfer shift actuator assembly) input |
6 |
- (Not used) |
7 (STP2)*2 |
Stop light switch assembly input |
8 |
- (Not used) |
9 |
- (Not used) |
10 (CANL) |
CAN communication line L |
11 (EXI3) |
Back up light sw input |
12 (IG1) |
ECU power supply input |
13 (BM) |
Motor relay power supply |
14 (SP1) |
Speed signal output for speedometer |
15 (RR-) |
Rear wheel speed RH (-) signal input |
16 (RR+) |
Rear wheel speed RH (+) power supply output |
17 (FL-) |
Front wheel speed LH (-) signal input |
18 (FL+) |
Front wheel speed LH (+) power supply output |
19 |
- (Not used) |
20 |
- (Not used) |
21 |
- (Not used) |
22 (CANH) |
CAN communication line H |
23 |
- (Not used) |
24 (TS)*3 |
Sensor check input |
25 (GND1) |
Skid control ECU (Brake actuator assembly) ground |
26 (STPO)*2 |
STOP Relay output |
27 (HDCS) |
4WD identification signal input*1 |
28 (RL-) |
Rear wheel speed LH (-) signal input |
29 (RL+) |
Rear wheel speed LH (+) power supply output |
30 (FR-) |
Front wheel speed RH (-) signal input |
31 (FR+) |
Front wheel speed RH (+) power supply output |
32 |
- (Not used) |
33 (CSW) |
VSC OFF switch input |
34 |
- (Not used) |
35 (STP) |
STOP Relay input |
36 |
- (Not used) |
37 |
- (Not used) |
38 (+BS) |
Solenoid relay power supply |
1. TERMINAL INSPECTION
(a) Disconnect the connector and measure the voltage or resistance on the wire harness side.
Text in Illustration
*a |
Front view of wire harness connector (to Skid Control ECU [Brake Actuator Assembly]) |
- |
- |
HINT:
Voltage cannot be measured with the connector connected to the skid control (brake actuator assembly) as the connector is watertight.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
S1-1 (GND2) - Body ground |
W-B - Body ground |
Pump motor ground |
Always |
Below 1 Ω |
S1-3 (EXI) - Body ground*1 |
LG - Body ground |
4WD detection switch (Transfer shift actuator assembly) input |
|
11 to 14 V |
A.D.D. position switch (Differential motor actuator assembly) signal input |
|
11 to 14 V |
||
S1-5 (EXI4) - Body ground*1 |
GR - Body ground |
L4 detection switch (Transfer shift actuator assembly) input |
|
11 to 14 V |
S1-7 (STP2) - Body ground |
L - Body ground |
Stop light switch assembly input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
8 to 14 V → Below 1.5 V |
S1-12 (IG1) - Body ground |
G - Body ground |
ECU power supply input |
Ignition switch ON |
11 to 14 V |
S1-13 (BM) - Body ground |
B - Body ground |
Motor relay power supply |
Always |
11 to 14 V |
S1-14 (SP1) - Body ground |
G - Body ground |
Speed signal output for speedometer |
Ignition switch ON |
11 to 14 V |
S1-25 (GND1) - Body ground |
W-B - Body ground |
Skid control ECU (Brake actuator assembly) ground |
Always |
Below 1 Ω |
S1-26 (STPO) - Body ground |
B - Body ground |
STOP Relay output |
Ignition switch ON |
11 to 14 V |
S1-33 (CSW) - Body ground |
GR - Body ground |
VSC OFF switch input |
VSC OFF switch pressed and held → released |
Below 1 Ω → 10 kΩ or higher |
S1-35 (STP) - Body ground |
SB - Body ground |
STOP Relay input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
8 to 14 V → Below 1.5 V |
S1-38 (+BS) - Body ground |
R - Body ground |
Solenoid relay power supply |
Always |
11 to 14 V |
Inspection
INSPECTION
PROCEDURE
1. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY
(a) When there is a malfunction such as noise from a speaker or no sound at all,
replace the speaker with a new one and check that the malfunction disappears.
OK:
Malfunction disappears.
HINT:
Connect the connectors to th ...
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down, or
that the shift point is too high or too low, conduct the following road test referring
to t ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
Text in Illustration
*1
Main Body ECU (Multiplex Network Body ECU)
-
-
(a) Disconnect the driver side junction block and main body ECU (multiplex network
body ECU) connect ...