Component Tests and General Diagnostics

BODY CONTROL MODULE (BCM) INSPECTION

1. Remove the following parts:
a. Front scuff plate (LH) Front Scuff Plate Removal/Installation

b. Front side trim (LH) Front Side Trim Removal/Installation

c. Upper panel Upper Panel Removal/Installation

d. Shift knob (MTX) Manual Transaxle Shift Mechanism Removal/Installation [G35M-R] Manual Transaxle Shift Mechanism Removal/Installation [G66M-R]

e. Selector lever knob (ATX) Automatic Transaxle Shift Mechanism Removal/Installation

f. Shift panel Shift Panel Removal/Installation

g. Side wall Side Wall Removal/Installation

h. Console Console Removal/Installation

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

3. Remove the lower panel. (driver-side) Lower Panel Removal/Installation

4. Set the starter cut relay out of the way. (with advanced keyless entry and push button start system) (MTX) Service and Repair

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

- If the voltage or continuity 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)

















































*1
With theft-deterrent system
*2
With power door lock system
*3
With auto wiper system
*4
With advanced keyless entry and push button start system
*5
With keyless entry system
*6
With manual air conditioner

Generated pulse (reference)

Pattern 1





- Terminal:

- Bonnet latch switch signal: 1J (+) -> body ground (-)
- Rear door switch (LH) signal: 6E (+) -> body ground (-)
- Lock input (Driver-side door lock-link switch): 6I (+) -> body ground (-)
- Lock/unlock input (passenger-side door lock-link switch) (rear door lock link switch (RH, LH)): 6J (+) -> body ground (-)
- Rear door switch (RH) signal: 6K (+) -> body ground (-)
- Unlock input (Driver-side door lock-link switch): 6L (+) -> body ground (-)

- Oscilloscope setting: 1 V/DIV (Y), 1 ms/DIV (X), DC range

Pattern 2





- Terminal:

- Front door switch (driver side) signal: 6G (+) -> body ground (-)
- Front door switch (passenger side) signal: 6H (+) -> body ground (-)

- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

Pattern 3





- Terminal: 2E (+) -> body ground (-)
- Oscilloscope setting: 1 V/DIV (Y), 200 microsecond/DIV (X), DC range

Inspection Using an Oscilloscope (Reference)

Intruder sensor signal






- Terminal connected: 5N (+) -> Body ground (-)
- Oscilloscope setting: 5 V/DIV (Y): 5 s/DIV (X), DC range