DTC P081C:24 [START STOP UNIT]

id0902p6022800

Description

NOT P position switch circuit malfunction

Detection condition

•  Start stop unit detects that the NOT P position switch is stuck off for 5 s or more for a continuous 5 times with the ignition switched ON (engine off or on).

Fail-safe function

•  Perform the NOT P position switch control in a position other than P.

Possible cause

•  Selector lever component connector or terminal malfunction

•  Open circuit in wiring harness between selector lever component terminal I and body ground

•  NOT P position switch malfunction

•  Start stop unit connector or terminal malfunction

•  Open circuit in wiring harness between start stop unit terminal 1J and selector lever component terminal B

•  Start stop unit malfunction

Description	NOT P position switch circuit malfunction
Detection condition	• Start stop unit detects that the NOT P position switch is stuck off for 5 s or more for a continuous 5 times with the ignition switched ON (engine off or on).
Fail-safe function	• Perform the NOT P position switch control in a position other than P.
Possible cause	• Selector lever component connector or terminal malfunction • Open circuit in wiring harness between selector lever component terminal I and body ground • NOT P position switch malfunction • Start stop unit connector or terminal malfunction • Open circuit in wiring harness between start stop unit terminal 1J and selector lever component terminal B • 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 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • 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 6.
2	INSPECT FOR OPEN CIRCUIT IN NOT P POSITION SWITCH GROUND CIRCUIT • Verify that the selector lever component connector is disconnected. • Inspect for continuity between selector lever component terminal I (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
2		No	Refer to the wiring diagram and verify whether or not there is a common connector between selector lever component terminal I and body ground. 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 6.
3	INSPECT NOT P POSITION SWITCH • Inspect the NOT P position switch. (See NOT P POSITION SWITCH INSPECTION.) • Is the NOT P position switch normal?	Yes	Go to the next step.
3		No	Replace the selector lever component, then go to Step 6. (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.)
4	INSPECT START STOP UNIT CONNECTOR CONDITION • 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.
4		No	Repair or replace the connector, then go to Step 6.
5	INSPECT FOR OPEN CIRCUIT IN NOT P POSITION SWITCH CIRCUIT • Verify that the selector lever component and start stop unit connectors are disconnected. • Inspect for continuity between start stop unit terminal 1J (wiring harness-side) and selector lever component terminal B (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 start stop unit terminal 1J and selector lever component 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 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 the next step.
6	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT].) • Switch the ignition ON (engine off). • Perform the following work 5 times or more. ― Operate the selector lever to P position and hold for 5 s or more. ― Operate the selector lever to other than P position and hold for 5 s or more. ― Operate the selector lever to P position. • 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.
6		No	Go to the next step.
7	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].)
7		No	DTC troubleshooting completed.