Circuit/System Testing
WARNING: This page is about a different car, the 2017 GMC Yukon XL, 2017 GMC Yukon, 2017 Chevrolet Tahoe, 2017 Chevrolet Suburban 3500 HD, and 2017 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, remove the Q8 Control Solenoid Valve Assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement .
- Verify the Q8 Control Solenoid Valve Assembly is not contaminated with any debris. Refer to Control Solenoid Valve and Transmission Control Module Assembly Inspection .
- If contaminated
Repair as necessary.
- If not contaminated
- If contaminated
- Verify the resistance is within the specified range for each solenoid. Refer to Control Solenoid Valve and Transmission Control Module Assembly Inspection .
- If resistance is not within range
Replace the Q8 Control Solenoid Valve Assembly.
- If resistance is within range
- If resistance is not within range
- Place the Q8 Control Solenoid Valve Assembly on a clean work surface near the transmission assembly.
- Connect DT-47825-10 jumper harness between the vehicle wire harness electrical connector, and the Q8 Control Solenoid Valve Assembly electrical connector. Ignition ON.
- Verify the scan tool parameters do not display Malfunction.
- High Side Driver 1 Circuit High Voltage Test Status
- High Side Driver 1 Circuit Open Test Status
- High Side Driver 1 Circuit Low Voltage Test Status
- If Malfunction is displayed
Replace the Q8 Control Solenoid Valve Assembly.
- If Malfunction is not displayed
- All OK.
NOTE:
You must perform the Circuit/System Verification first.