Component Tests and General Diagnostics

BODY CONTROL MODULE (BCM) INSPECTION

1. Disconnect the negative battery cable.

2. Remove the following parts:

- Front scuff plate. (driver-side) Front Scuff Plate Removal/Installation
- Front side trim. (driver-side) Front Side Trim Removal/Installation
- Console panel. Console Panel Removal/Installation
- Console Console Removal/Installation

3. Set the hood release lever out of the way. Service and Repair

4. Remove the lower panel. Lower Panel Removal/Installation

5. Remove the BCM with the connector connected. Service and Repair

6. Connect the negative battery cable.

7. Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables.

- If the voltage is not as specified in the Terminal Voltage Table, inspect the parts under "Inspection item (s)".

- If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the BCM.

Terminal Voltage Table (Reference)

Terminal Voltage Table (Reference) (Part 1):

Terminal Voltage Table (Reference) (Part 2):

Terminal Voltage Table (Reference) (Part 3):

Terminal Voltage Table (Reference) (Part 4):

Terminal Voltage Table (Reference) (Part 5):

Terminal Voltage Table (Reference) (Part 6):

Terminal Voltage Table (Reference) (Part 7):

Terminal Voltage Table (Reference) (Part 8):

Terminal Voltage Table (Reference) (Part 9):

*1
With theft-deterrent system

Generated pulse (reference)

Pattern 1





- Terminal:

- Hood latch switch signal: 1B (+) - body ground (-)
- A/C on request signal: 3L (+) - body ground (-)
- Lock/unlock input (rear door lock-link switch (LH)): 5D (+) - body ground (-)
- Lock/unlock input (rear door lock-link switch (RH)): 5E (+) - body ground (-)
- Lock input (Driver-side door lock-link switch): 5G (+) - body ground (-)
- Lock/unlock input (passenger-side door lock-link switch): 5H (+) - body ground (-)
- Unlock input (Driver-side door lock-link switch): 5J (+) - body ground (-)
- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

Pattern 2





- Terminal: 5G (+) - body ground (-)
- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

Pattern 3





- Terminal:

- Hazard warning switch signal: 3T (+) - body ground (-)
- Front door switch (passenger-side) signal: 5V (+) - body ground (-)
- Rear door switch (LH) signal: 5Y (+) - body ground (-)
- Rear door switch (RH) signal: 5Z (+) - body ground (-)
- Front door switch (driver-side) signal: 5AB (+) - body ground (-)
- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

Pattern 4

NOTE:
- A dotted line wave pattern is output for BCM terminal 5AB, however, it appears as a solid line in the oscilloscope where it overlaps the voltage output for terminal 1F from the seat position memory control module.






- Terminal: 5AB (+) - body ground (-)
- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range