TERMINALS OF ECU
*A |
Main Body ECU (Multiplex Network Body ECU) with 2 Connectors |
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- |
*1 |
Main Body ECU (Multiplex Network Body ECU) with 2 Connectors |
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- |
*a |
2 Connectors |
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- |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
*A |
Main Body ECU (Multiplex Network Body ECU) with 1 Connector |
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- |
*1 |
Main Body ECU (Multiplex Network Body ECU) |
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- |
*a |
Main Body ECU (Multiplex Network Body ECU) |
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- |
(a) Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
(b) Measure the voltage on the wire harness side connector according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
3F-1 - Body ground |
W - Body ground |
Battery power supply |
Always |
11 to 14 V |
3K-1 - Body ground |
B-R - Body ground |
Battery power supply |
Always |
11 to 14 V |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Measure the resistance on the wire harness side connector according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
3D-3 - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(d) Reconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
(e) Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
3H-30 - Body ground |
G - Body ground |
Taillights and license plate lights drive output |
Light control switch in tail or head position |
11 to 14 V |
Light control switch off*1 |
Below 1 V |
|||
3A-52 - Body ground*2 |
L - Body ground |
Front fog light drive output |
Light control switch in tail or head position, fog light switch in front position |
Below 1 V |
Light control switch in tail or head position, fog light switch off |
11 to 14 V |
|||
3F-31 - Body ground |
G - Body ground |
H-LP LH relay drive output |
Ignition switch off |
11 to 14 V |
Ignition switch ON |
Below 1 V |
|||
F15-1 (DIM) - Body ground |
Y - Body ground |
H-LP RH relay drive output |
Ignition switch off |
11 to 14 V |
Ignition switch ON |
Below 1 V |
|||
F15-8 (A) - Body ground |
W - Body ground |
Light control switch AUTO position signal input |
Light control switch in AUTO position |
Below 1 V |
Light control switch not in AUTO position |
Pulse generation |
|||
F15-10 (HF) - Body ground |
LG - Body ground |
Dimmer switch high flash position signal input |
Dimmer switch in high flash position |
Below 1 V |
Dimmer switch not in high flash position |
Pulse generation |
|||
F15-12 (HEAD) - Body ground |
L - Body ground |
Light control switch head position input |
Light control switch in head position |
Below 1 V |
Light control switch not in head position |
Pulse generation |
|||
F15-19 (CLTB) - F15-21 (CLTE) |
G - V |
Automatic light control sensor power supply output |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
F15-20 (CLTS) - Body ground |
BE - Body ground |
Automatic light control sensor signal input |
Ignition switch off |
Below 1 V |
Automatic light control system operating |
Communication waveform generation (See waveform 1) |
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F15-22 (TAIL) - Body ground |
Y - Body ground |
Light control switch tail position signal input |
Light control switch in tail or head position |
Below 1 V |
Light control switch not in tail or head position |
Pulse generation |
|||
F15-24 (HU) - Body ground |
GR - Body ground |
Dimmer switch high position signal input |
Dimmer switch in high position |
Below 1 V |
Dimmer switch not in high position |
Pulse generation |
|||
F15-26 (FFOG) - Body ground*2 |
R - Body ground |
Fog light switch front position input |
Fog light switch in front position |
Below 1 V |
Fog light switch off |
Pulse generation |
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F16-4 (MILE) - Body ground*3 |
R - Body ground |
Door mirror foot lights drive output |
Door mirror foot light illuminates |
11 to 14 V |
Door mirror foot light off |
Below 3 V |
If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may be malfunctioning.
(1) Waveform 1
Item |
Content |
---|---|
Tool setting |
2 V/DIV., 10 ms./DIV. |
HINT:
The communication waveform changes according to the surrounding brightness.
CHECK HEADLIGHT ECU SUB-ASSEMBLY LH (for LED Headlight)
(a) Disconnect the A16 headlight ECU sub-assembly LH connector.
(b) Measure the resistance and voltage on the wire harness side connector according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A16-4 (IG) - Body ground |
V - Body ground |
Ignition power supply |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
A16-13 (ECUB) - Body ground |
L - Body ground |
Battery power supply |
Light control switch off* |
Below 1 V |
Light control switch in tail or head position |
11 to 14 V |
|||
A16-12 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the A16 headlight ECU sub-assembly LH connector.
HINT:
(d) Measure the voltage and check of pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A16-11 (TNS) - Body ground |
W - Body ground |
Left turn signal light signal input |
Ignition switch ON, left turn signal light off |
Below 1 V |
Ignition switch ON, left turn signal light blinking |
11 to 14 V ←→ Below 1 V |
|||
A16-16 (SBR) - A16-15 (SGR) |
B - BE |
Rear height control sensor sub-assembly LH power supply |
Ignition switch ON |
4.75 to 5.25 V |
A16-17 (SHRL) - A16-15 (SGR) |
W - BE |
Rear height control sensor sub-assembly LH signal input |
Ignition switch ON, vehicle unloaded, vehicle stopped |
Approximately 2.5 V (value decreases as the front of the vehicle is raised) |
A16-20 (LINL) - Body ground |
P - Body ground |
LIN communication line |
Ignition switch off |
Below 1 V |
Ignition switch ON |
Pulse generation |
|||
B-20 (DRL+) - B-11 (DRL-) |
- |
High beam headlights drive output |
High beam headlights off |
Below 1 V |
High beam headlights on |
11 to 14 V |
|||
B-4 (LOLED2) - B-3 (LOLED0) |
- |
Low beam headlights/high beam headlights drive output |
Low beam headlights and high beam headlights off |
Below 1 V |
Low beam headlights or high beam headlights on |
11.2 to 17.7 V |
|||
B-7 (ACTBI) - B-17 (ACTGI) |
- |
Headlight leveling motor power source |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
B-8 (ACTSI) - B-17 (ACTGI) |
- |
Headlight leveling motor signal output |
Ignition switch ON, low beam headlights on, vehicle height not changed |
Below 1 V |
Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds |
1.0 to 14 V |
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B-9 (TURN+) - B-13 (TURN-) |
- |
Left turn signal light signal output |
Ignition switch ON, left turn signal light off |
Below 1 V |
Ignition switch ON, left turn signal light blinking |
11 to 14 V ←→ Below 1 V |
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B-16 (PWM1) - B-1 (HI-) |
- |
Daytime running lights/clearance lights control signal output |
Daytime running lights and clearance lights off |
Below 1 V |
Daytime running lights or clearance lights on |
Pulse generation |
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B-10 (HI+) - B-1 (HI-) |
- |
Daytime running lights/clearance lights power source |
Daytime running lights and clearance lights off |
Below 1 V |
Daytime running lights or clearance lights on |
11 to 14 V |
CHECK HEADLIGHT ECU SUB-ASSEMBLY RH (for LED Headlight)
(a) Disconnect the A17 headlight ECU sub-assembly RH connector.
(b) Measure the resistance and voltage on the wire harness side connector according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A17-4 (IG) - Body ground |
V - Body ground |
Ignition power supply |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
A17-13 (ECUB) - Body ground |
L - Body ground |
Battery power supply |
Light control switch off* |
Below 1 V |
Light control switch in tail or head position |
11 to 14 V |
|||
A17-12 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the A17 headlight ECU sub-assembly RH connector.
HINT:
(d) Measure the voltage and check of pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A17-11 (TNS) - Body ground |
B - Body ground |
Right turn signal light signal input |
Ignition switch ON, right turn signal light off |
Below 1 V |
Ignition switch ON, right turn signal light blinking |
11 to 14 V ←→ Below 1 V |
|||
A17-20 (LINL) - Body ground |
P - Body ground |
LIN communication line |
Ignition switch off |
Below 1 V |
Ignition switch ON |
Pulse generation |
|||
B-20 (DRL+) - B-11 (DRL-) |
- |
High beam headlights drive output |
High beam headlights off |
Below 1 V |
High beam headlights on |
11 to 14 V |
|||
B-4 (LOLED2) - B-3 (LOLED0) |
- |
Low beam headlights/high beam headlights drive output |
Low beam headlights and high beam headlights off |
Below 1 V |
Low beam headlights or high beam headlights on |
11.2 to 17.7 V |
|||
B-7 (ACTBI) - B-17 (ACTGI) |
- |
Headlight leveling motor power source |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
B-8 (ACTSI) - B-17 (ACTGI) |
- |
Headlight leveling motor signal output |
Ignition switch ON, low beam headlights on, vehicle height not changed |
Below 1 V |
Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds |
1.0 to 14 V |
|||
B-9 (TURN+) - B-13 (TURN-) |
- |
Right turn signal light signal output |
Ignition switch ON, right turn signal light off |
Below 1 V |
Ignition switch ON, right turn signal light blinking |
11 to 14 V ←→ Below 1 V |
|||
B-16 (PWM1) - B-1 (HI-) |
- |
Daytime running lights/clearance lights control signal output |
Daytime running lights and clearance lights off |
Below 1 V |
Daytime running lights or clearance lights on |
Pulse generation |
|||
B-10 (HI+) - B-1 (HI-) |
- |
Daytime running lights/clearance lights power source |
Daytime running lights and clearance lights off |
Below 1 V |
Daytime running lights or clearance lights on |
11 to 14 V |
CHECK COMBINATION METER ASSEMBLY
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Toyota CH-R Service Manual > Maintenance: Air Conditioning Filter(for Valeo Made)
Components
COMPONENTS
ILLUSTRATION
*1
AIR FILTER COVER PLATE
*2
CLEAN AIR FILTER
*3
GLOVE COMPARTMENT DOOR ASSEMBLY
-
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Removal
REMOVAL
PROCEDURE
1. REMOVE GLOVE COMPARTMENT DOOR ASSEM ...
Toyota CH-R Service Manual > Lin Communication System: Front Passenger Side Door ECU Communication Stop (B2322)
DESCRIPTION
This DTC is stored when LIN communication between the power window regulator
motor assembly (for front passenger door) and main body ECU (multiplex network body
ECU) stops for 10 seconds or more.
DTC No.
Detection Item
DTC Detection Condition
...