DTC P0830:23 [START STOP UNIT]

id0902p6023100

System malfunction location

CPP switch circuit malfunction

Detection condition

•  Start stop unit detects clutch switch is stuck on for 10 s or more.

Fail-safe

•  Change to the back-up mode.

•  Perform the control with CPP switch turned off.

Possible cause

•  DTCs are stored in the PCM.

•  CPP switch connector or terminal malfunction

•  CPP switch malfunction

•  PCM connector or terminal malfunction

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

―  CPP switch terminal A—PCM terminal 2J (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

―  CPP switch terminal A—PCM terminal 2AG (SKYACTIV-D 2.2)

•  Start stop unit connector or terminal malfunction

•  Short to ground in wiring harness between start stop unit terminal 2E and CPP switch terminal A

•  Start stop unit malfunction

System malfunction location	CPP switch circuit malfunction
Detection condition	• Start stop unit detects clutch switch is stuck on for 10 s or more.
Fail-safe	• Change to the back-up mode. • Perform the control with CPP switch turned off.
Possible cause	• DTCs are stored in the PCM. • CPP switch connector or terminal malfunction • CPP switch malfunction • PCM connector or terminal malfunction • Short to ground in the wiring harness between the following terminals: ― CPP switch terminal A—PCM terminal 2J (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― CPP switch terminal A—PCM terminal 2AG (SKYACTIV-D 2.2) • Start stop unit connector or terminal malfunction • Short to ground in wiring harness between start stop unit terminal 2E and CPP switch terminal A • Start stop unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY PCM DTCs • Perform the DTC inspection for the PCM using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].) • Is the DTC displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See DTC TABLE [SKYACTIV-D 2.2].)
1		No	Go to the next step.
2	INSPECT CPP SWITCH CONNECTOR CONDITION • Switch the ignition to off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Disconnect the CPP switch 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.
2		No	Repair or replace the connector, then go to Step 8.
3	INSPECT CPP SWITCH • Inspect the CPP switch. (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [SKYACTIV-D 2.2].) • Is the CPP switch normal?	Yes	Go to the next step.
3		No	Replace the CPP switch, then go to the Step 8. (See CLUTCH PEDAL POSITION SWITCH REMOVAL/INSTALLATION [C66M-R, C66MX-R].) (See CLUTCH PEDAL POSITION SWITCH REMOVAL/INSTALLATION [D66M-R, D66MX-R].)
4	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM 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 8.
5	INSPECT CPP SWITCH CIRCUIT FOR SHORT TO GROUND • Verify that the PCM and CPP switch connectors are disconnected. • Inspect for continuity between CPP switch terminal A (vehicle wiring harness side) and body ground. • Is there continuity?	Yes	Repair or replace the wiring harness which is shorted to ground, then go to Step 8.
5		No	Go to the next step.
6	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.
6		No	Repair or replace the connector, then go to Step 8.
7	INSPECT CPP SWITCH CIRCUIT FOR SHORT TO GROUND • Verify that the start stop unit and CPP switch connectors are disconnected. • Inspect for continuity between CPP switch terminal A (vehicle wiring harness side) and body ground. • Is there continuity?	Yes	Repair or replace the wiring harness which has a short to ground, then go to the next step.
7		No	Go to the next step.
8	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Reconnect the disconnected negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Clear 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 10 min or more. • Perform the DTC inspection for the start stop unit using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) • Is DTC P0830:23 displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the start stop unit, then go to the next step. (See START STOP UNIT REMOVAL/INSTALLATION.)
8		No	Go to the next step.
9	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [START STOP UNIT].)
9		No	DTC troubleshooting completed.