TERMINALS OF ECU
1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
(a) Disconnect the main body ECU (driver side junction block assembly) connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D49-7 (RCTY) - Body ground |
GR - Body ground |
Rear courtesy light switch RH input |
Rear door RH closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
D49-21 (PCTY) - Body ground |
V - Body ground |
Passenger side courtesy light switch input |
Passenger side door closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
D49-25 (BCTY) - Body ground |
GR - Body ground |
Back door courtesy light switch input |
Back door closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
D50-16 (HCTY) - Body ground |
BE - Body ground |
Security courtesy switch |
Engine hood closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
D50-24 (DCTY) - Body ground |
V - Body ground |
Driver side door courtesy light switch input |
Driver side door closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
D51-5 (KSW) - Body ground |
L - Body ground |
Unlock warning switch input |
No key in ignition key cylinder (OFF) → Key inserted (ON) |
10 kΩ or higher → Below 1 Ω |
2A-1 (ACC) - Body ground |
B - Body ground |
Ignition power supply (ACC signal) |
Ignition switch ACC → OFF |
11 to 14 V → Below 1 V |
2A-1 (IG) - Body ground |
B - Body ground |
Ignition power supply (IG signal) |
Ignition switch ON → OFF |
11 to 14 V → Below 1 V |
2C-30 (ALTB) - Body ground |
BR - Body ground |
+B (power system alternator system) power supply |
Always |
11 to 14 V |
2F-16 (GND1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
2C-24 (BECU) - Body ground |
L - Body ground |
+B power supply |
Always |
11 to 14 V |
2O-19 (LCTY) - Body ground |
R - Body ground |
Rear courtesy light switch LH input |
Rear door LH closed (OFF) → open (ON) |
10 kΩ or higher → Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
HINT:
Measure the values on the wire harness side with the connectors disconnected.
(c) Reconnect the main body ECU (driver side junction block assembly) connectors.
(d) Measure the voltage according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D48-4 (HAZ) - Body ground |
G - Body ground |
Turn signal flasher relay signal |
System in alarm sounding state |
Below 1 V |
D51-4 (IND) - Body ground |
SB - Body ground |
Security indicator output |
Security indicator on (It lights up only in arming preparation state or alarm sounding state. It flashes when immobiliser is operating.) |
3 to 6 V |
D51-6 (SH) - Body ground |
BR - Body ground |
Security horn drive |
Security horn sounding (Theft deterrent system is in alarm sounding state) |
Pulse generation (Below 1 V ← → 12 V) |
2C-25 (HORN) - Body ground |
R - Body ground |
Vehicle horn drive |
Vehicle horn sounding (Theft deterrent system is in alarm sounding state) |
Pulse generation (Below 1 V ← → 12 V) |
If the result is not as specified, the main body ECU (driver side junction block assembly) may have a malfunction.
If your vehicle has to be stopped in an emergency
Only in an emergency, such as if it becomes impossible to stop the vehicle
in the normal way, stop the vehicle using the following procedure:
Steadily step on the brake pedal
with both feet and firmly depress it.
Do not pump the brake pedal repeatedly a ...
Installation
INSTALLATION
PROCEDURE
1. TEMPORARILY INSTALL SLIDING ROOF HOUSING ASSEMBLY
(a) Temporarily install the sliding roof housing panel with the 18 nuts.
NOTICE:
When installing the housing to the vehicle, first install the housing
center front and ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure listed to troubleshoot the Active Torque
Control 4WD system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
...