DTC P2071

DTC P2071	SSV stuck closed
DETECTION CONDITION	The PCM monitors the input signal from the SSV switch when the PCM turns the SSV solenoid valve on. If the input signal is off, the PCM determines that the SSV is stuck closed. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2/Mode 12) is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	SSV control system malfunction SSV actuator malfunction SSV solenoid valve malfunction SSV switch connector or terminals malfunction Short to ground in wiring harness between SSV switch terminal A and PCM terminal 2AE SSV switch malfunction PCM connector or terminals malfunction PCM malfunction

SSV stuck closed

DETECTION CONDITION

The PCM monitors the input signal from the SSV switch when the PCM turns the SSV solenoid valve on. If the input signal is off, the PCM determines that the SSV is stuck closed.

Diagnostic support note

This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
FREEZE FRAME DATA (Mode 2/Mode 12) is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

SSV control system malfunction
SSV actuator malfunction
SSV solenoid valve malfunction
SSV switch connector or terminals malfunction
Short to ground in wiring harness between SSV switch terminal A and PCM terminal 2AE
SSV switch malfunction
PCM connector or terminals malfunction
PCM malfunction

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED Has the FREEZE FRAME DATA (Mode 12) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT SSV CONTROL SYSTEM OPERATION Perform the Secondary Shutter Valve (SSV) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION ). Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 10.
3		No	Go to the next step.
4	INSPECT SSV ACTUATOR Turn the ignition switch off. Inspect the SSV actuator. (See SECONDARY SHUTTER VALVE (SSV) ACTUATOR INSPECTION ). Is there any malfunction?	Yes	Replace the intake manifold, then go to Step 10. (See INTAKE MANIFOLD REMOVAL/INSTALLATION ).
4		No	Go to the next step.
5	INSPECT SSV SOLENOID VALVE Inspect the SSV solenoid valve. (See SECONDARY SHUTTER VALVE (SSV) SOLENOID VALVE INSPECTION ). Is there any malfunction?	Yes	Replace the SSV solenoid valve, then go to Step 10. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION ).
5		No	Go to the next step.
6	INSPECT SSV SWITCH CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the SSV switch connector. Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 10.
6		No	Go to the next step.
7	INSPECT SSV SWITCH POWER SUPPLY CIRCUS FOR SHORT TO GROUND SSV switch connector is disconnected. Turn the ignition switch off. Inspect for continuity between SSV switch terminal A (wiring harness-side) and body ground. Is there continuity?	Yes	If the short to ground circuit could be detected: Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: Replace the PCM (short to ground in the PCM internal circuit). (See PCM REMOVAL/INSTALLATION ). Go to Step 10.
7		No	Go to the next step.
8	INSPECT SSV SWITCH Inspect the SSV switch. (See SECONDARY SHUTTER VALVE (SSV) SWITCH INSPECTION ). Is there any malfunction?	Yes	Replace the SSV switch, then go to Step 10. (See SECONDARY SHUTTER VALVE (SSV) SWITCH REMOVAL/INSTALLATION ).
8		No	Go to the next step.
9	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to the next step.
9		No	Go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P2071 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE ). Start the engine and warm up it completely. Run the engine at high engine speed and high load. Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST ). Is the PENDING CODE same as DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
10		No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE ". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
11		No	DTC troubleshooting completed.