| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM100000001EGN8 |
| Model Year Start: 2019 | Model: Camry HV | Prod Date Range: [09/2018 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: TERMINALS OF ECU; 2019 - 2024 MY Camry HV [09/2018 - ] | ||
TERMINALS OF ECU
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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![2018 - 2020 MY Camry HV [07/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL](/t3Portal/stylegraphics/info.gif)
(b) Reconnect the instrument panel junction block assembly connectors.
(c) Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
MB-31 (BECU) - Body ground |
- |
Auxiliary battery power supply |
Power switch off |
11 to 14 V |
|
MB-32 (IG) - Body ground |
- |
Ignition power supply (IG signal) |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
11 to 14 V |
|||
|
MB-30 (ACC) - Body ground |
- |
Ignition power supply (ACC signal) |
Power switch off |
Below 1 V |
|
Power switch on (ACC) |
11 to 14 V |
|||
|
MB-11 (GND1) - Body ground |
- |
Ground |
Always |
Below 1 Ω |
|
K52-1 (FLCY) - Body ground |
W - Body ground |
Front door courtesy light switch assembly (for LH) input |
Front door LH closed |
10 kΩ or higher |
|
Front door LH open |
Below 1 Ω |
|||
|
K52-6 (FRCY) - Body ground |
BE - Body ground |
Front door courtesy light switch assembly (for RH) input |
Front door RH closed |
10 kΩ or higher |
|
Front door RH open |
Below 1 Ω |
|||
|
MB-13 (LCTY) - Body ground |
- |
Rear door courtesy light switch assembly (for LH) input |
Rear door LH closed |
10 kΩ or higher |
|
Rear door LH open |
Below 1 Ω |
|||
|
MB-2 (RCTY) - Body ground |
- |
Rear door courtesy light switch assembly (for RH) input |
Rear door RH closed |
10 kΩ or higher |
|
Rear door RH open |
Below 1 Ω |
|||
|
K52-30 (HCTY) - Body ground |
GR - Body ground |
Engine hood courtesy switch input |
Engine hood open |
10 kΩ or higher |
|
Engine hood closed |
Below 1 Ω |
|||
|
MB-4 (LGCY) - Body ground |
- |
Luggage compartment door courtesy light switch input |
Luggage compartment door closed |
10 kΩ or higher |
|
Luggage compartment door open |
Below 1 Ω |
|||
|
MB-14 (TRLY) - Body ground |
- |
Taillight relay drive output |
Power switch off |
11 to 14 V |
(d) Install the main body ECU (multiplex network body ECU) to instrument panel junction block assembly.
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(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 |
|---|---|---|---|---|
|
3B-13 (LSFL) - Body ground |
W - Body ground |
Front door LH unlock detection switch input |
Front door LH unlocked |
Below 1 V |
|
Front door LH locked |
11 to 14 V |
|||
|
3B-12 (LSFR) - Body ground |
GR - Body ground |
Front door RH unlock detection switch input |
Front door RH unlocked |
Below 1 V |
|
Front door RH locked |
11 to 14 V |
|||
|
K53-18 (L2) - Body ground |
LG - Body ground |
Driver door key-linked lock input |
Driver door key cylinder turned to lock position |
Below 1 V |
|
Driver door key cylinder off |
11 to 14 V |
|||
|
K53-17 (UL3) - Body ground |
BE - Body ground |
Driver door key-linked unlock input |
Driver door key cylinder turned to unlock position |
Below 1 V |
|
Driver door key cylinder off |
11 to 14 V |
|||
|
3B-14 (LSWL) - Body ground |
GR - Body ground |
Rear door LH unlock detection switch input |
Rear door LH unlocked |
Below 1 V |
|
Rear door LH locked |
11 to 14 V |
|||
|
K51-20 (LSWR) - Body ground |
L - Body ground |
Rear door RH unlock detection switch input |
Rear door RH unlocked |
Below 1 V |
|
Rear door RH locked |
11 to 14 V |
|||
|
3A-20 (SH) - Body ground |
L - Body ground |
Security horn assembly drive |
Security horn assembly sounding (Theft deterrent system in alarm sounding state) |
Pulse generation (Below 1 V ← → 11 to 14 V) |
|
3C-27 (HORN) - Body ground |
W - Body ground |
Vehicle horns drive |
Vehicle horns sounding (Theft deterrent system in alarm sounding state) |
Pulse generation (Below 1 V ← → 11 to 14 V) |
|
3C-31 (HRLY) - Body ground |
V - Body ground |
Headlight relay drive output |
Low beams blinking (Theft deterrent system in alarm sounding state) |
Pulse generation (Below 1 V ← → 11 to 14 V) |
|
3B-29 (ILE) - Body ground |
GR - Body ground |
Interior lights drive output |
Interior lights illuminated (Theft deterrent system in alarm sounding state) |
Below 1 V |
|
|