DTC B1DA0:23 [RETRACTABLE HARDTOP CONTROL MODULE]

id0902r4076300

Description

Top lock motor pulse input circuit malfunction

Detection condition

•  The retractable hardtop control module cannot detect a pulse signal from the top lock motor when the top lock motor operation starts.

Fail-safe

•  Stops retractable hardtop operation

Possible cause

•  Short to ground in wiring harness between the following terminals:

―  Retractable hardtop control module terminal 4X and Top lock motor terminal F

―  Retractable hardtop control module terminal 4W and Top lock motor terminal D

•  Short to power supply in wiring harness between the following terminals:

―  Retractable hardtop control module terminal 4X and Top lock motor terminal F

―  Retractable hardtop control module terminal 4Y and Top lock motor terminal B

•  Open circuit in wiring harness between the following terminals:

―  Retractable hardtop control module terminal 4X and Top lock motor terminal F

―  Retractable hardtop control module terminal 4Y and Top lock motor terminal B

―  Retractable hardtop control module terminal 4W and Top lock motor terminal D

•  Line-to-line short circuit in wiring harness between the following terminals:

―  Top lock motor terminal F and top lock motor terminal D

―  Top lock motor terminal F and top lock motor terminal B

―  Top lock motor terminal D and top lock motor terminal B

•  Top lock motor malfunction

•  Retractable hardtop control module malfunction

Description	Top lock motor pulse input circuit malfunction
Detection condition	• The retractable hardtop control module cannot detect a pulse signal from the top lock motor when the top lock motor operation starts.
Fail-safe	• Stops retractable hardtop operation
Possible cause	• Short to ground in wiring harness between the following terminals: ― Retractable hardtop control module terminal 4X and Top lock motor terminal F ― Retractable hardtop control module terminal 4W and Top lock motor terminal D • Short to power supply in wiring harness between the following terminals: ― Retractable hardtop control module terminal 4X and Top lock motor terminal F ― Retractable hardtop control module terminal 4Y and Top lock motor terminal B • Open circuit in wiring harness between the following terminals: ― Retractable hardtop control module terminal 4X and Top lock motor terminal F ― Retractable hardtop control module terminal 4Y and Top lock motor terminal B ― Retractable hardtop control module terminal 4W and Top lock motor terminal D • Line-to-line short circuit in wiring harness between the following terminals: ― Top lock motor terminal F and top lock motor terminal D ― Top lock motor terminal F and top lock motor terminal B ― Top lock motor terminal D and top lock motor terminal B • Top lock motor 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. (See CLEARING DTC [RETRACTABLE HARDTOP CONTROL MODULE].) • Retrieve the retractable hardtop control module DTCs using the M-MDS. (See DTC INSPECTION [RETRACTABLE HARDTOP CONTROL MODULE].) • Is the DTCs U3000:44/U3000:45/U3000:49 displayed?	Yes	Replace the retractable hardtop control module, then go to Step 7. (See RETRACTABLE HARDTOP CONTROL MODULE REMOVAL/INSTALLATION.)
1		No	Go to the next step.
2	INSPECT TOP LOCK 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 top lock motor connectors. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Top lock motor terminal F ― 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 4X and top lock motor terminal F • 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 Step 7.
2		No	Go to the next step.
3	INSPECT TOP LOCK MOTOR CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the retractable hardtop control module and top lock motor connectors are disconnected. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the ignition ON (engine off or on). • Measure the voltage at the following terminals (wiring harness-side): ― Top lock motor terminal F ― Top lock motor terminal B • Is the voltage 0 V?	Yes	Go to the next step.
3		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 4X and top lock motor terminal F • Retractable hardtop control module terminal 4Y and top lock motor 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 power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 7.
4	INSPECT TOP LOCK MOTOR CIRCUIT FOR OPEN CIRCUIT • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Verify that the retractable hardtop control module and top lock motor connectors are disconnected. • Inspect the wiring harness for continuity between the following terminals (wiring harness-side): ― Retractable hardtop control module terminal 4X and top lock motor terminal F ― Retractable hardtop control module terminal 4Y and top lock motor terminal B ― Retractable hardtop control module terminal 4W and 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 4X and top lock motor terminal F • Retractable hardtop control module terminal 4Y and top lock motor terminal B • 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 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 7.
4		No	Go to the next step.
5	INSPECT TOP LOCK MOTOR CIRCUIT FOR SHORT BETWEEN CIRCUITS • Verify that the retractable hardtop control module and top lock motor connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Top lock motor terminal F and top lock motor terminal D ― Top lock motor terminal F and top lock motor terminal B ― Top lock motor terminal D and top lock motor terminal B • Is there continuity?	Yes	Go to the next step.
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Top lock motor terminal F and top lock motor terminal D • Top lock motor terminal F and top lock motor terminal B • Top lock motor terminal D and top lock motor 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 between circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short between circuit. Go to Step 7.
6	INSPECT TOP LOCK MOTOR • Inspect the top lock motor. (See TOP LOCK MOTOR INSPECTION.) • Is the top lock motor normal?	Yes	Go to the next step.
6		No	Replace the top lock motor, then go to the next step. (See TOP LOCK MOTOR REMOVAL/INSTALLATION.)
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC for the retractable hardtop control module using the M-MDS. (See CLEARING DTC [RETRACTABLE HARDTOP CONTROL MODULE].) • Retrieve the retractable hardtop control module DTCs using the M-MDS. (See DTC INSPECTION [RETRACTABLE HARDTOP CONTROL MODULE].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the retractable hardtop control module. (See RETRACTABLE HARDTOP CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
7		No	Go to the next step.
8	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].)
8		No	DTC troubleshooting completed.