Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools Required
MPCS (MCIC) service connector 07WAZ-001010A
Test Mode 1
Check the PCM for DTCs and troubleshoot PCM or F-CAN loss of communication errors first (see GENERAL TROUBLESHOOTING INFORMATION ), then perform this diagnosis if the HDS is not available.
- Check the No. 7 (7.5 A) fuse and No. 21 (7.5 A) fuse in the under-dash fuse/relay box.
Are the fuses OK?
YES -Go to step 2.
NO -Replace the fuse, and recheck. If the fuse is blown again, repair the short to body ground on the fuse circuit(s).■
- Remove the left kick panel (see TRIM REMOVAL/INSTALLATION - DOOR AREAS ).
- Turn the ignition switch to ON (II), and move the interior lights switch to the middle (door) position.
- Connect the MPCS (MCIC) service connector (A) to the MICU service check connector socket (B) in the under-dash fuse/relay box.
- Wait 5 seconds, and watch the map lights. When the front and rear map lights flash quickly once, and then go off, the system is in Test Mode 1.
- Check for B-CAN DTCs indicated by the gauge control module odometer/trip meter display while still in Test Mode 1. Push the odometer trip meter select/switch button to display the next code. After you get to the last code, the display shows END. If no DTCs are stored, the display will read NO (see HOW TO DISPLAY DTCS ON THE GAUGE CONTROL MODULE ).
Are any DTCs indicated?
YES -Go to step 7.
NO -Go to step 10
- Record all DTCs and sort them into these categories.
- Battery voltage DTCs
- Internal error DTCs
- Loss of communication DTCs
- Signal error DTCs
- Clear the DTCs by pressing and holding the select button for about 13 seconds.
- You will hear a beep to confirm the code have been cleared. Operate the devices that failed, and recheck for codes.
Test Mode 2
- Remove the MPCS (MCIC) service connector from the under-dash fuse/relay box socket for 5-10 seconds, then re-insert it to enter Mode 2. When the system enters Mode 2, the front and rear map lights will flash two times quickly and then go off.NOTE: If the MPCS connector is disconnected for too short or too long of a time, or the ignition switch is turned to LOCK (0), the system will return to Test Mode 1.
- The following tables list the circuits that can be checked in Test Mode 2. Operate the switch that is most closely related to the problem. If the circuit is OK, the map lights will blink once. If the circuit is faulty, there will be no indication.
MICU
SWITCH REFERENCE CHART
| Item |
|---|
| Driver's door switch (OPEN) |
| Front passenger's door switch (OPEN) |
| Left rear door switch (OPEN) |
| Right rear door switch (OPEN) |
| Ignition key switch (inserted) |
| Front passenger's door lock knob switch (UNLOCK)() |
| Left rear door lock knob switch (UNLOCK)() |
| Right rear door lock knob switch (UNLOCK)() |
| Audio security ground (disconnected) |
| Driver's seat belt switch (unbuckled) |
| Brake pedal position switch (ON; brake pedal pressed) |
| Tailgate switch (OPEN) |
| In-Bed trunk lid key cylinder switch (OPEN) |
| In-Bed trunk lid key cylinder switch |
RELAY CONTROL MODULE
RELAY CONTROL MODULE REFERENCE CHART
| Item |
|---|
| Windshield wiper switch (AUTO STOP/PARK)() |
| Hood switch (open)() |
| A/C pressure switch/thermal protector (A/C ON) |
COMBINATION SWITCH CONTROL UNIT
COMBINATION SWITCH CONTROL UNIT REFERENCE CHART
| Item |
|---|
| Turn signal switch (LEFT) |
| Turn signal switch (RIGHT) |
| Combination light switch (ON; each position) |
| Dimmer switch (ON) |
| Passing switch (ON) |
| Windshield wiper switch (ON) |
| Intermittent wiper dwell timer |
| Windshield washer switch (ON) |
POWER WINDOW MASTER SWITCH (DOOR MULTIPLEX CONTROL UNIT)
POWER WINDOW MASTER SWITCH (DOOR MULTIPLEX CONTROL UNIT) REFERENCE CHART
| Item | ||||
|---|---|---|---|---|
| Power window master switch (Driver's power window UP) | ||||
| Power window master switch (Driver's power window DOWN) | ||||
| Power window master switch (Driver's power window AUTO UP) | ||||
| Power window master switch (Driver's power window AUTO DOWN) | ||||
| Power window master switch (Front passenger's power window UP) | ||||
| Power window master switch (Front passenger's power window DOWN) | ||||
| Power window master switch (Left rear power window UP) | ||||
| Power window master switch (Left rear power window DOWN) | ||||
| Power window master switch (Right rear power window UP) | ||||
| Power window master switch (Right rear power window DOWN) | ||||
| Driver's door key cylinder switch(1) (LOCK) | ||||
| Driver's door key cylinder switch(1) (UNLOCK) | ||||
| Driver's door lock switch (LOCK) | ||||
| Driver's door lock switch (UNLOCK) | ||||
| Driver's door lock knob switch (LOCK) | ||||
| Driver's door lock knob switch (UNLOCK) | ||||
| Passenger's power window switch | ||||
| Passenger's power window switch (UP) | ||||
| Passenger's power window switch (DOWN) | ||||
Be sure to rotate the key cylinder switch two times to each position (lock and lock, unlock and unlock) to ensure the door lock knob switch is in the appropriate position.
|
GAUGE CONTROL MODULE
GAUGE CONTROL MODULE REFERENCE CHART
| Item |
|---|
| Parking brake switch (ON; parking brake applied) |
| Cruise control main SET/RESUME/CANCEL switch (ON; switch pressed) |
| Gauge illumination full bright |
| Select switch button (ON) |
| Reset switch button (ON) |
| Transmission range switch (P, R, N, D) |
| Washer fluid level switch (fluid removed) |
| Brake fluid level switch (fluid removed) |
| VSA-OFF switch |
| Cargo area light switch (ON) |
Do the map lights indicate proper switch operation?
YES -Go to function and input test for the system related to the failure. ■
NO -Repair the open, short, or replace the faulty switch. ■