Diagnostic Procedure
WARNING: This page is about a different car, the 2020 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
DTC U200B:16 (RETRACTABLE HARDTOP CONTROL MODULE) DIAGNOSTIC PROCEDURE
| Step |
Inspection |
Action |
| 1 |
VERIFY OTHER RETRACTABLE HARDTOP CONTROL MODULE DTCs
|
Yes |
Replace the retractable hardtop control module, then go to Step 5.
(See RETRACTABLE HARDTOP CONTROL MODULE REMOVAL/INSTALLATION
.) |
| No |
Go to the next step. |
| 2 |
INSPECT FRONT ROOF LINK MOTOR CIRCUIT FOR SHORT TO GROUND
- Switch the ignition off.
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION
.)
- Disconnect the retractable hardtop control module and front roof link motor connectors.
- Inspect for continuity between the following terminals (wiring harness-side) and body ground:
- Front roof link motor (RH) terminal B
- Front roof link motor (LH) terminal B
- Is there continuity?
|
Yes |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- Retractable hardtop control module terminal 4O and front roof link motor (RH) terminal B
- Retractable hardtop control module terminal 4S and front roof link motor (LH) terminal B
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
Go to Step 5.
|
| No |
Go to the next step. |
| 3 |
INSPECT REAR ROOF LINK MOTOR CIRCUIT FOR SHORT TO GROUND
- Disconnect the rear roof link motor connectors.
- Verify that the retractable hardtop control module and rear roof link motor connectors are disconnected.
- Inspect for continuity between the following terminals (wiring harness-side) and body ground:
- Rear roof link motor (RH) terminal D
- Rear roof link motor (LH) terminal D
- Is there continuity?
|
Yes |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- Retractable hardtop control module terminal 4O and rear roof link motor (RH) terminal D
- Retractable hardtop control module terminal 4S and rear roof link motor (LH) terminal D
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
Go to Step 5.
|
| No |
Go to the next step. |
| 4 |
INSPECT TOP LOCK MOTOR CIRCUIT FOR SHORT TO GROUND
- Disconnect the top lock motor connector.
- Verify that the retractable hardtop control module and top lock motor connectors are disconnected.
- Inspect for continuity between the following terminal (wiring harness-side) and body ground:
- Top lock motor terminal D
- Is there continuity?
|
Yes |
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- Retractable hardtop control module terminal 4W and top lock motor terminal D
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
Go to the next step.
|
| No |
Go to the next step. |
| 5 |
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
|
Yes |
Repeat the inspection from Step 1.
|
| No |
Go to the next step. |
| 6 |
VERIFY IF OTHER DTCs DISPLAYED
- Are any other DTCs displayed?
|
Yes |
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [RETRACTABLE HARDTOP CONTROL MODULE] .) |
| No |
DTC troubleshooting completed. |