DTC U0030:87 [RETRACTABLE HARDTOP CONTROL MODULE]

id0902r4078000

Description

Communication error with power window main switch
Detection condition
•  The retractable hardtop control module cannot receive a power window open signal during the retractable hardtop operation.
Fail-safe
•  Stops retractable hardtop operation at fully open position
Possible cause
•  Short to ground in wiring harness between retractable hardtop control module terminal 4AD and power window main switch terminal 1J
•  Open circuit in wiring harness between retractable hardtop control module terminal 4AD and power window main switch terminal 1J
•  Power window main switch malfunction
•  Retractable hardtop control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY OTHER RETRACTABLE HARDTOP CONTROL MODULE DTCs
•  Clear the DTC for the retractable hardtop control module using the M-MDS.
•  Retrieve the retractable hardtop control module DTCs using the M-MDS.
•  Is the DTCs U3000:44/U3000:45/U3000:49 displayed?
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 POWER WINDOW MAIN SWITCH CIRCUIT FOR SHORT TO GROUND
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the retractable hardtop control module and power window main switch connectors.
•  Inspect for continuity between the following terminal (wiring harness-side) and body ground:
―  Power window main switch terminal 1J
•  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 4AD and power window main switch terminal 1J
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 POWER WINDOW MAIN SWITCH CIRCUIT FOR OPEN CIRCUIT
•  Verify that the retractable hardtop control module and power window main switch connectors are disconnected.
•  Inspect the wiring harness for continuity between the following terminals (wiring harness-side):
―  Retractable hardtop control module terminal 4AD and power window main switch terminal 1J
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Retractable hardtop control module terminal 4AD and power window main switch terminal 1J
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 an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 5.
4
INSPECT POWER WINDOW MAIN SWITCH
•  Inspect the power window main switch.
•  Is the power window main switch normal?
Yes
Go to the next step.
No
Replace the power window main switch , then go to the next step.
(See POWER WINDOW MAIN SWITCH REMOVAL/INSTALLATION.)
5
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Connect the negative battery cable.
•  Clear the DTC for the retractable hardtop control module using the M-MDS.
•  Retrieve the retractable hardtop control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the retractable hardtop control module.
Go to the next step.
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.