DSC HU/Control Module INSPECTION
- Disconnect the DSC HU/Control Module connector. (See DSC HU/Control Module REMOVAL/INSTALLATION .)
- Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
- Attach the tester lead to the DSC HU/Control Module wiring harness-side connector and inspect voltage, continuity, or resistance according to the standard (reference) on the table.
- If not specified, replace the DSC HU/Control Module. (See DSC HU/Control Module REMOVAL/INSTALLATION .)
Standard (Reference)
| Terminal | Signal name | Connected to | Measured item | Measured terminal (measurement condition) | Standard | Inspection item(s) |
|---|---|---|---|---|---|---|
| A | Power supply | Battery | Voltage | Under any condition | B+ |
|
| (solenoid operation) | ||||||
| B | Power supply | Battery | Voltage | Under any condition | B+ |
|
| (motor operation) | ||||||
| C | CAN_H | CAN module | This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection. | |||
| D | CAN_L | CAN module | This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection. | |||
| E | - | - | - | - | - | - |
| F | - | - | - | - | - | - |
| G | - | - | - | - | - | - |
| H | - | - | - | - | - | - |
| I | Power supply (system) | Ignition switch | Voltage | Ignition switched ON (engine off). | B+ |
|
| Switch the ignition OFF. | 1 V or less | |||||
| J | RF wheel-speed (+) | RF ABS wheel-speed sensor | Continuity | J-RF ABS wheel-speed sensor terminal A | Continuity detected |
|
| K | RF wheel-speed (-) | RF ABS wheel-speed sensor | Continuity | K-RF ABS wheel-speed sensor terminal B | Continuity detected |
|
| L | RR wheel-speed (-) | RR ABS wheel-speed sensor | Continuity | L-RR ABS wheel-speed sensor terminal D | Continuity detected |
|
| M | RR wheel-speed (+) | RR ABS wheel-speed sensor | Continuity | M-RR ABS wheel-speed sensor terminal B | Continuity detected |
|
| N | - | - | - | - | - | - |
| O | Brake light | Brake light relay or brake light unit | Voltage | Brake pedal depressed | B+ |
|
| Brake pedal released | 1 V or less | |||||
| P | LR wheel-speed (-) | LR ABS wheel-speed sensor | Continuity | P-LR ABS wheel-speed sensor terminal D | Continuity detected |
|
| Q | - | - | - | - | - | - |
| R | LR wheel-speed (+) | LR ABS wheel-speed sensor | Continuity | R-LR ABS wheel-speed sensor terminal B | Continuity detected |
|
| S | LF wheel-speed sensor (+) | LF ABS wheel-speed sensor | Continuity | S-LF ABS wheel-speed sensor terminal A | Continuity detected |
|
| T | - | - | - | - | - | - |
| U | - | - | - | - | - | - |
| V | - | - | - | - | - | - |
| W | LF wheel-speed sensor (-) | LF ABS wheel-speed sensor | Continuity | W-LF ABS wheel-speed sensor terminal B | Continuity detected |
|
| X | - | - | - | - | - | - |
| Y | - | - | - | - | - | - |
| Z | - | - | - | - | - | - |
| AA | - | - | - | - | - | - |
| AB | - | - | - | - | - | - |
| AC | - | - | - | - | - | - |
| AD | - | - | - | - | - | - |
| AE | - | - | - | - | - | - |
| AF | - | - | - | - | - | - |
| AG | - | - | - | - | - | - |
| AH | - | - | - | - | - | - |
| AI | - | - | - | - | - | - |
| AJ | - | - | - | - | - | - |
| AK | Ground | Ground point | Continuity | AK-ground point | Continuity detected |
|
| AL | Ground | Ground point | Continuity | AL-ground point | Continuity detected |
|