DTC P0930:71 [START STOP UNIT]

id0902p6023400

Description

Shift-lock solenoid circuit malfunction

Detection condition

•  Start stop unit detects the shift-lock solenoid is stuck on for 30 min or more with the ignition switched ON (engine off or on).

Fail-safe

•  Inhibits the shift lock control.

Possible cause

•  Selector lever component connector or terminal malfunction

•  Shift-lock solenoid power supply circuit malfunction

―  Short to ground in wiring harness between ENGINE IG1 7.5 A fuse and selector lever component terminal A

―  ENGINE IG1 7.5 A fuse malfunction

―  Open circuit in wiring harness between IG1 relay and selector lever component terminal A

•  Start stop unit connector or terminal malfunction

•  Short to ground in the wiring harness between selector lever component terminal D and start stop unit terminal 2G

•  Open circuit in the wiring harness between selector lever component terminal D and start stop unit terminal 2G

•  Shift-lock solenoid malfunction

•  Start stop unit malfunction

Description	Shift-lock solenoid circuit malfunction
Detection condition	• Start stop unit detects the shift-lock solenoid is stuck on for 30 min or more with the ignition switched ON (engine off or on).
Fail-safe	• Inhibits the shift lock control.
Possible cause	• Selector lever component connector or terminal malfunction • Shift-lock solenoid power supply circuit malfunction ― Short to ground in wiring harness between ENGINE IG1 7.5 A fuse and selector lever component terminal A ― ENGINE IG1 7.5 A fuse malfunction ― Open circuit in wiring harness between IG1 relay and selector lever component terminal A • Start stop unit connector or terminal malfunction • Short to ground in the wiring harness between selector lever component terminal D and start stop unit terminal 2G • Open circuit in the wiring harness between selector lever component terminal D and start stop unit terminal 2G • Shift-lock solenoid malfunction • Start stop unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT SELECTOR LEVER COMPONENT CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the selector lever component connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
1		No	Repair or replace the connector, then go to Step 7.
2	INSPECT SHIFT-LOCK SOLENOID POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND • Verify that the selector lever component connector is disconnected. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Switch the ignition ON (engine off or on). • Measure the voltage at the selector lever component terminal A (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
2		No	Inspect the ENGINE IG1 7.5 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE IG1 7.5 A fuse and selector lever component terminal A. 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. • Replace the fuse. • If the fuse is damaged: ― Replace the fuse. • If the fuse is normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between IG1 relay and selector lever component terminal A. 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.
3	INSPECT START STOP UNIT CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the start stop unit connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
3		No	Repair or replace the connector, then go to Step 7.
4	INSPECT SHIFT-LOCK SOLENOID CIRCUIT FOR SHORT TO GROUND • Verify that the selector lever component and start stop unit connectors are disconnected. • Inspect for continuity between selector lever component terminal D (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between selector lever component terminal D and start stop unit terminal 2G. 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.
4		No	Go to the next step.
5	INSPECT SHIFT-LOCK SOLENOID CIRCUIT FOR OPEN CIRCUIT • Verify that the selector lever component and start stop unit connectors are disconnected. • Inspect for continuity between selector lever component terminal D (wiring harness-side) and start stop unit terminal 2G (wiring harness-side). • 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 selector lever component terminal D and start stop unit terminal 2G. 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.
6	INSPECT SHIFT-LOCK SOLENOID • Inspect the shift-lock solenoid. (See SHIFT-LOCK SYSTEM INSPECTION.) • Is the shift-lock solenoid normal?	Yes	Go to the next step.
6		No	Replace the selector lever component, then go to the next step. (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.)
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT].) • Switch the ignition ON (engine off or on) and wait for 30 min or more. • Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the start stop unit. (See START STOP UNIT 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 [START STOP UNIT].)
8		No	DTC troubleshooting completed.