AWD Control Module Inspection
NOTE:
- AWD control module terminal voltage can vary depending on measuring conditions and vehicle aging, resulting in misdiagnosis. Therefore, it is necessary to perform an overall inspection of the input/output systems and AWD control module to determine which part is malfunctioning.
- With the AWD control module connector connected, measure voltage by connecting the voltmeter negative (-) lead to the body ground and positive (+) lead to each AWD control module terminal.
- Measure voltage or resistance at each AWD control module terminal using a voltmeter and an ohmmeter.
- If not as specified, replace the AWD control module. (See AWD CONTROL MODULE REMOVAL/INSTALLATION
NOTE:- The terminal voltage at terminal A of types A and B differs depending on the differential oil temperature sensor.
- The type of the differential oil temperature sensor is determined based on the character on the label shown in the illustration and the connector color on the part side of the differential oil temperature sensor.
Type A
- Character on label: N
- Connector color: Gray
Type B
- Character on label: S
- Connector color: Black
Terminal Voltage List (Reference)
| Terminal | Signal | Input/output | Connected to | Measuring item | Test condition | Voltage (V)/Continuity | Inspection location in case of failure | |
|---|---|---|---|---|---|---|---|---|
| A | Differential oil temperature sensor signal | Input | Differential oil temperature sensor | Voltage | Ignition switch ON (engine off or on) | Differential oil temperature 20°C {68°F} | Type A: approx. 3.0 Type B: approx. 0.57 |
|
| Differential oil temperature 60°C {140°F} | Type A: approx. 1.3 Type B: approx. 0.15 |
|||||||
| B | - | - | - | - | - | - | - | - |
| C | Differential oil temperature sensor GND | - | Differential oil temperature sensor | Voltage | Any condition | 1.0 or below |
|
|
| D | - | - | - | - | - | - | - | - |
| E | - | - | - | - | - | - | - | - |
| F | - | - | - | - | - | - | - | - |
| G | CAN_H | Input/output | - | This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection. | - | |||
| H | CAN_L | Input/output | - | This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection. | - | |||
| I | Power supply (Ignition switch) | Input | Ignition key | Voltage | Ignition switch ON (engine off or on) | B+ |
|
|
| Ignition switch OFF | 1.0 or below | |||||||
| J | - | - | - | - | - | - | - | - |
| K | Power supply (Main) | Input | Battery | Voltage | Any condition | B+ |
|
|
| L | - | - | - | - | - | - | - | - |
| M | - | - | - | - | - | - | - | - |
| N | Ground | - | Ground | Voltage | Any condition | 0 |
|
|
| O | AWD solenoid (+) | Output | AWD solenoid | Voltage | Ignition switch ON (engine off or on) | B+ |
|
|
| Ignition switch OFF | 1.0 or below | |||||||
| P | AWD solenoid (-) | Output | AWD solenoid | Voltage | Ignition switch ON (engine off or on) | B+ |
|
|
| Ignition switch OFF | 1.0 or below | |||||||