VTM-4 Control Unit Inputs and Outputs
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.
The VTM-4 control unit terminal voltage and measuring conditions for the VTM-4 inputs and outputs test are done with the VTM-4 connectors connected.
TERMINAL DESCRIPTION
| Terminal number | Wire color | Terminal sign (Terminal name) | Description | Measurement | |
|---|---|---|---|---|---|
| Conditions | Voltage | ||||
| A1 | YEL | IG1 (IGNITION SIGNAL) | Power supply for activating the system | Ignition switch to ON (II) | Battery voltage |
| A3 | GRY/RED | RRP (Rear right pulse) | Detect right-rear wheel speed sensor signal | Turn wheel at 1 rotation/second | There should be 0 to about 5.0 V repeatedly. (A digital voltmeter reads about 2.5 V when the wheel is turning faster.) |
| A4 | ORN/GRN | FSR (Fail-safe relay) | Drives VTM-4 relay | Ignition switch to ON (II) | Battery voltage |
| Engine running | Less than 1.0 V | ||||
| A5 | GRY/YEL | RLP (Rear left pulse) | Detects left-rear wheel speed sensor signal | Turn wheel at 1 rotation/second | There should be 0 to about 5.0 V repeatedly. (A digital voltmeter reads about 2.5 V when the wheel is turning faster.) |
| A6 | GRN/ORN | PARBRK (Parking brake) | Detects parking brake signal | Parking brake on | Less than 2.0 V |
| Parking brake off | Battery voltage | ||||
| A7 | LT GRN | FRP (Front right pulse) | Detects right-front wheel speed sensor signal | Turn wheel at 1 rotation/second | There should be 0 to about 5.0 V repeatedly. (A digital voltmeter reads about 2.5 V when the wheel is turning faster.) |
| A8 | BRN/WHT | LOCKSW (LOCK switch) | Detects VTM-4 LOCK switch signal | Ignition switch to ON (II) | Less than 1.0 V |
| VTM-4 LOCK mode | Battery voltage | ||||
| A9 | WHT/RED | FLP (Front left pulse) | Detects left-front wheel speed sensor signal | Turn wheel at 1 rotation/second | There should be 0 to about 5.0 V repeatedly. (A digital voltmeter reads about 2.5 V when the wheel is turning faster.) |
| A10 | BLK | LG1 (Logic ground) | Ground | Less than 0.5 V | |
| A11 | WHT | CANH (CAN communication signal high) | CAN communication signal | Ignition switch to ON (II) | About 2.5 V (pulses) |
| A12 | BLU | NEP (Engine revolution) | Detects engine revolution signal | Ignition switch to ON (II) | Above 8.0 V |
| Engine running at 1, 000 rpm | 5.0 to 8.0 V | ||||
| A13 | BLK | TOL (Temperature oil low) | Detects differential fluid temperature sensor signal | Check at normal temperature with the ignition switch to ON (II) | 1.0 to 3.6 V |
| A14 | RED/WHT | WARN1 (Warning 1) | Drives VTM-4 indicator | VTM-4 indicator on | Less than 4.0 V |
| VTM-4 indicator off | Battery voltage | ||||
| A15 | WHT | TOH (Temperature oil high) | Power supply for differential fluid temperature sensor | Check at normal temperature with the ignition switch ON (II) | 4.0 to 5.0 V |
| A16 | YEL/BLK | LOCKL (Lock lamp) | Drives VTM-4 LOCK indicator | VTM-4 LOCK indicator on | Less than 4.0 V |
| VTM-4 LOCK indicator off | Battery voltage | ||||
| A18 | LT BLU | K-LINE | Communication signal to HDS | Ignition switch to ON (II) (Not connected to HDS) | About 9.0 V |
| A20 | BRN | SCS (Service check signal) | Detects service check connector signal | SCS circuit shorted | Less than 2.0 V |
| SCS circuit opened | About 5.0 V | ||||
| A22 | RED | F-CANL (F-CAN communication signal low) | CAN communication signal | Ignition switch to ON (II) | About 2.5 V (pulses) |
TERMINAL DESCRIPTION
| Terminal number | Wire color | Terminal sign (Terminal name) | Description | Measurement | |
|---|---|---|---|---|---|
| Conditions | Voltage | ||||
| B1 | BLK/RED | LCOH (Left coil high) | Drives left clutch electromagnetic coil (positive) | Ignition switch to ON (II) | Less than 1.0 V |
| Engine running | Less than 1.0V | ||||
| VTM-4 LOCK mode | Above 3.0 V | ||||
| B2 | BLK/WHT | LCOL (Left coil low) | Drives left clutch electromagnetic coil (negative) | Ignition switch to ON (II) | Less than 1.0 V |
| Engine running | Less than 1.0 V | ||||
| VTM-4 LOCK mode | Less than 1.0 V | ||||
| B3 | BRN | RCOH (Right coil high) | Drives right clutch electromagnetic coil (positive) | Ignition switch to ON (II) | Less than 1.0 V |
| Engine running | Less than 1.0 V | ||||
| VTM-4 LOCK mode | Above 3.0 V | ||||
| B4 | GRN | RCOL (Right coil low) | Drives right clutch electromagnetic coil (negative) | Ignition switch to ON (II) | Less than 1.0 V |
| Engine running | Less than 1.0 V | ||||
| VTM-4 LOCK mode | Less than 1.0 V | ||||
| B5 | BLK | PG (Power ground) | Ground | Less than 0.5 V | |
| B7 | RED/BLU | PWR (Power) | Power supply for VTM-4 control unit | 10 seconds after ignition switch to ON (II) | Less than 3.0 V |
| Engine running | Battery voltage | ||||
| VTM-4 LOCK mode | Battery voltage | ||||
| B11 | RED/WHT | WARN2 (Warning 2) | Drives VTM-4 indicator | VTM-4 indicator on | Less than 4.0 V |
| VTM-4 indicator off | Battery voltage | ||||
| B12 | BLK | LG2 (Logic ground) | Ground | Less than 0.5 V | |