DTC P2070 [13B-MSP]

DTC REFERENCE CHART

DTC P2070	SSV stuck open
DETECTION CONDITION	The PCM monitors the input signal from the SSV switch when the PCM turns the SSV solenoid valve off. If the input signal is on, the PCM determines that the SSV is stuck open. 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	SSV control system malfunction SSV actuator malfunction SSV solenoid valve malfunction Connector or terminal malfunction Open circuit in wiring harness between SSV switch terminal B and body ground SSV switch malfunction Open circuit in wiring harness between SSV switch terminal A and PCM terminal 2AE 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 CONTROL SYSTEM OPERATION Perform the "SSV Operation Inspection". (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [13B-MSP] .) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 11.
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 [13B-MSP] .) Is there any malfunction?	Yes	Replace the intake manifold, then go to Step 11. (See INTAKE MANIFOLD REMOVAL/INSTALLATION [13B-MSP] .)
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 [13B-MSP] .) Is there any malfunction?	Yes	Replace the SSV solenoid valve, then go to Step 11. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [13B-MSP] .)
5		No	Go to the next step.
6	INSPECT SSV SWITCH CONNECTOR FOR POOR CONNECTION 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 terminal, then go to Step 11.
6		No	Go to the next step.
7	INSPECT SSV SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between SSV switch terminal B (wiring harness-side) and body ground. Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 11.
8	INSPECT SSV SWITCH Inspect the SSV switch. (See SECONDARY SHUTTER VALVE (SSV) SWITCH INSPECTION [13B-MSP] .) Is there any malfunction?	Yes	Replace the SSV switch, then go to Step 11. (See SECONDARY SHUTTER VALVE (SSV) SWITCH REMOVAL/INSTALLATION [13B-MSP] .)
8		No	Go to the next step.
9	INSPECT PCM CONNECTOR FOR POOR CONNECTION 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 terminal, then go to Step 11.
9		No	Go to the next step.
10	INSPECT SSV SWITCH POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between SSV switch terminal A (wiring harness-side) and PCM terminal 2AE (wiring harness-side.) Is there continuity?	Yes	Go to the next step.
10		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
11	VERIFY TROUBLESHOOTING OF DTC P2070 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. Start the engine and warm up it completely. Run the engine at high engine speed and high load. Is the PENDING CODE same as DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [13B-MSP] .)
11		No	Go to the next step.
12	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] .)
12		No	DTC troubleshooting completed.