DTC 44-50:
SH-AWD Control Unit Power Supply Voltage Low
NOTE: Before you troubleshoot, review the general troubleshooting information See: Transmission and Drivetrain/Differential Assembly/Testing
and Inspection/Initial Inspection and Diagnostic Overview.
1. Make sure the battery is fully changed and the charging system is working properly.
2. Turn the ignition switch to LOCK (0).
3. Check the No. 2 (SVTM-4) (30 A) fuse in the main under-hood fuse box.
Is the fuse OK?
YES -
Go to step 4.
NO -
Replace the blown fuse and recheck. If the No. 2 (30 A) fuse blows again, repair a short to ground in the wire between the fuse in the main
under-hood fuse box and the SH-AWD relay 4P connector, then replace the fuse and recheck.?
4. Turn the ignition switch to ON (II).
5. Clear the DTC with the HDS.
6. Start the engine.
7. Check for DTCs with the HDS.
Is DTC 44-50 indicated?
YES -
Go to step 8.
NO -
Intermittent failure, the system is OK at this time.?
8. Turn the ignition switch to LOCK (0).
9. Remove the SH-AWD relay See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and
Drivetrain/Relays and Modules - Differential/Actuator Relay/Service and Repair, then test the SH-AWD relay See: Power and Ground
Distribution/Testing and Inspection/Power Relay Test.?
Is the SH-AWD relay OK?
YES -
Go to step 10.
NO -
Replace the SH-AWD relay See: Powertrain Management/Transmission Control Systems/Relays and Modules - Transmission and
Drivetrain/Relays and Modules - Differential/Actuator Relay/Service and Repair.?
10. Measure the voltage between SH-AWD relay 4P connector terminal No. 1 and body ground.
Is there battery voltage?
