DTC P0661 [13B-MSP]

DTC REFERENCE CHART

DTC P0661	SSV solenoid valve control circuit low
DETECTION CONDITION	The PCM monitors the SSV solenoid valve control voltage when the PCM turns the SSV solenoid valve off. If the control voltage is less than 5.8 V , the PCM determines that the SSV solenoid valve control circuit voltage is low. 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 is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Connector or terminal malfunction Open circuit in wiring harness between main relay terminal C and SSV solenoid valve terminal A Short to ground in wiring harness between main relay terminal C and SSV solenoid valve terminal A Short to ground in wiring harness between SSV solenoid valve terminal B and PCM terminal 21 SSV solenoid valve malfunction Open circuit in wiring harness between SSV solenoid valve terminal B and PCM terminal 21 PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA 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 SOLENOID VALVE CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the SSV solenoid valve connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion.) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 9.
3		No	Go to the next step.
4	INSPECT SSV SOLENOID VALVE POWER CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND Turn the ignition switch to the ON position (engine off.) Measure the voltage between SSV solenoid valve terminal A (wiring harness-side) and body ground. Is the voltage B+ ?	Yes	Go to the next step.
4		No	Repair or replace the wiring harness for a possible open circuit or short to ground, then go to Step 9.
5	INSPECT SSV SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Turn the ignition switch off. Inspect for continuity between SSV solenoid valve terminal B (wiring harness-side) and body ground. Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 9.
5		No	Go to the next step.
6	INSPECT SSV SOLENOID VALVE Inspect the SSV solenoid valve. (See SECONDARY SHUTTER VALVE (SSV) SOLENOID VALVE INSPECTION [13B-MSP] .) Is there any malfunction?	Yes	Replace the SSV solenoid valve, then go to Step 9. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [13B-MSP] .)
6		No	Go to the next step.
7	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, corrosion.) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 9.
7		No	Go to the next step.
8	INSPECT SSV SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT Turn the ignition switch off. Inspect for continuity between SSV solenoid valve terminal B (wiring harness-side) and PCM terminal 21 (wiring harness-side.) Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
9	VERIFY TROUBLESHOOTING OF DTC P0661 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. Start the engine. Is the PENDING CODE same as DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [13B-MSP] .)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [13B-MSP] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [13B-MSP] .)
10		No	DTC troubleshooting completed.