TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Disconnect the MB main body ECU (multiplex network body ECU) connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connectors disconnected.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
MB-11(GND1) - Body ground |
- |
Ground |
Always |
Below 1 Ω |
MB-31 (BECU) - Body ground |
- |
Battery power supply |
Always |
11 to 14 V |
MB-30 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch ACC |
11 to 14 V |
MB-30 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch off |
Below 1 V |
MB-32 (IG) - Body ground |
- |
IG power supply |
Ignition switch ON |
11 to 14 V |
MB-32 (IG) - Body ground |
- |
IG power supply |
Ignition switch off |
Below 1 V |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Reconnect the MB main body ECU (multiplex network body ECU) connectors.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
1H-10 (ACT-) - Body ground |
LA-G - Body ground |
Door lock motor unlock drive output (except driver door) |
Door control switch or driver door key cylinder off |
Below 1 V |
Door control switch or driver door key cylinder unlocked |
11 to 14 V |
|||
1D-3 (ACT-) - Body ground |
G - Body ground |
Door lock motor unlock drive output (except driver door) |
Door control switch or driver door key cylinder off |
Below 1 V |
Door control switch or driver door key cylinder unlocked |
11 to 14 V |
|||
1D-1 (ACT+) - Body ground |
R - Body ground |
Door lock motor lock drive output (all doors) |
Door control switch or driver door key cylinder off |
Below 1 V |
Door control switch or driver door key cylinder locked |
11 to 14 V |
|||
1H-12 (ACT+) - Body ground |
LA-R - Body ground |
Door lock motor lock drive output (all doors) |
Door control switch or driver door key cylinder off |
Below 1 V |
Door control switch or driver door key cylinder locked |
11 to 14 V |
|||
1D-2 (ACTD) - Body ground |
B - Body ground |
Driver door lock motor unlock drive output |
Door control switch or driver door key cylinder off |
Below 1 V |
Door control switch or driver door key cylinder unlocked |
11 to 14 V |
|||
M6-2 (UL3) - Body ground |
G - Body ground |
Driver door key-linked unlock input |
Driver door key cylinder turned to neutral position → on (unlock) |
Pulse generation → Below 1 V |
M6-29 (L2) - Body ground |
SB - Body ground |
Driver door key-linked lock input |
Driver door key cylinder turned to neutral position → on (lock) |
Pulse generation → Below 1 V |
M6-27 (FRCY) - Body ground |
LG - Body ground |
Front door courtesy light switch RH input |
Front door RH open |
Below 1 V |
M6-27 (FRCY) - Body ground |
LG - Body ground |
Front door courtesy light switch RH input |
Front door RH open |
11 to 14 V |
M6-6 (FLCY) - Body ground |
Y - Body ground |
Front door courtesy light switch LH input |
Front door LH open |
Below 1 V |
M6-6 (FLCY) - Body ground |
Y - Body ground |
Front door courtesy light switch LH input |
Front door LH closed |
11 to 14 V |
1H-36 (LCTY) - Body ground |
P - Body ground |
Rear door courtesy light switch LH input*1 Upper access panel lock assembly LH input*2 Lower access panel lock assembly LH input*2 |
Rear door LH open |
Below 1 V |
1H-36 (LCTY) - Body ground |
P - Body ground |
Rear door courtesy light switch LH input*1 Upper access panel lock assembly LH input*2 Lower access panel lock assembly LH input*2 |
Rear door LH closed |
Pulse generation |
1D-30 (RCTY) - Body ground |
V - Body ground |
Rear door courtesy light switch RH input*1 Upper access panel lock assembly RH input*2 Lower access panel lock assembly RH input*2 |
Rear door RH open |
Below 1 V |
1D-30 (RCTY) - Body ground |
V - Body ground |
Rear door courtesy light switch RH input*1 Upper access panel lock assembly RH input*2 Lower access panel lock assembly RH input*2 |
Rear door RH closed |
Pulse generation |
1D-11 (LSFL) - Body ground |
P - Body ground |
Front door LH unlock detection switch input |
Front door LH unlocked |
Below 1 V |
1D-11 (LSFL) - Body ground |
P - Body ground |
Front door LH unlock detection switch input |
Ignition switch off, all doors closed and front door LH locked |
Pulse generation |
1D-24 (LSFR) - Body ground |
GR - Body ground |
Front door RH unlock detection switch input |
Front door RH unlocked |
Below 1 V |
1D-24 (LSFR) - Body ground |
GR - Body ground |
Front door RH unlock detection switch input |
Ignition switch off, all doors closed and front door RH locked |
Pulse generation |
1A-41 (LSR) - Body ground |
Y - Body ground |
Rear door RH unlock detection switch input |
Rear door RH or LH unlocked |
Below 1 V |
1A-41 (LSR) - Body ground |
Y - Body ground |
Rear door RH unlock detection switch input |
Ignition switch off, all doors closed and rear door RH and LH locked |
Pulse generation |
1H-27 (LSR) - Body ground |
L - Body ground |
Rear door LH unlock detection switch input |
Rear door LH or RH unlocked |
Below 1 V |
1H-27 (LSR) - Body ground |
L - Body ground |
Rear door LH unlock detection switch input |
Ignition switch off, all doors closed and rear door LH and RH locked |
Pulse generation |
1F-29 (BZR) - Body ground |
Y - Body ground |
Wireless door lock buzzer signal |
Wireless door lock buzzer off |
Below 1 V |
1F-29 (BZR) - Body ground |
Y - Body ground |
Wireless door lock buzzer signal |
Wireless door lock buzzer on |
Pulse generation |
31-1D (KSW) - Body ground*5 |
G - Body ground |
Key unlock warning switch input |
Key in ignition key cylinder |
Below 1 V |
No key in ignition key cylinder |
11 to 14 V or Pulse generation |
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
CAUTION:
Be sure to read Precaution thoroughly before servicing (See page
).
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal. Therefore, make sure to read the
...
Chassis
General Maintenance
GENERAL MAINTENANCE
PROCEDURE
1. INSPECT STEERING LINKAGE
(a) Check the steering wheel free play (See page
).
(b) Check the steering linkage for looseness or damage.
(1) Check that the tie rod ends do not have excessive play.
(2) Check that the dust seals and boots are ...
Front Radar Sensor Beam Axis Not Adjusted (C1A14)
DESCRIPTION
After installing a new millimeter wave radar sensor assembly, if sensor beam
axis adjustment has not been performed, DTC C1A14 will be stored.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C1A14
Fro ...