Dtc P2004[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

DTC P2004[L3 WITH TC]

DTC P2004 Variable swirl control system shutter valve stuck open
• PCM monitors the mass variable swirl shutter valve position using the variable swirl shutter valve switch. If
the PCM turns variable swirl solenoid valve on but variable swirl shutter valve position still remains open
(variable swirl shutter valve switch is on), the PCM determines that the variable swirl shutter valve is stuck
open.
Diagnostic support note
• This is a continuous monitor (CCM).
DETECTION
• MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in
CONDITION
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.
• DTCs are stored in PCM memory.
• Variable swirl shutter valve actuator malfunction (stuck open)
• Misconnected or pulled out vacuum hose
• Variable swirl shutter valve switch malfunction
• Variable swirl solenoid valve malfunction
• Connector or terminal malfunction
• Open circuit in the wiring harness between variable swirl solenoid valve terminal B and PCM terminal 2AS
POSSIBLE
• Short to power in the wiring harness between variable swirl solenoid valve terminal B and PCM terminal
CAUSE
2AS
• Open circuit in the wiring harness between variable swirl shutter valve switch terminal A and PCM terminal
2AE
• Short to power in the wiring harness between variable swirl shutter valve switch terminal A and PCM
terminal 2AE
• PCM malfunction
MAIN RELAY
VARIABLE SWIRL SHUTTER VALVE SWITCH
VARIABLE SWIRL SOLENOID VALVE
WIRING HARNESS SIDE CONNECTOR
VARIABLE SWIRL SHUTTER VALVE SWITCH
WIRING HARNESS SIDE CONNECTOR
01-02–178
ON-BOARD DIAGNOSTIC [L3 WITH TC]
VARIABLE SWIRL
SOLENOID VALVE
9
9
A B
5
A
9
7
B
2BE 2BA 2AW 2AS 2AO 2AK 2AG 2AC 2Y 2U 2Q 2M
2BF 2BB 2AX 2AT 2AP 2AL 2AH 2AD 2Z 2V 2R 2N
B A
2BG 2BC 2AY 2AU 2AQ 2AM 2AI 2AE 2AA 2W 2S 2O
2BH 2BD 2AZ 2AV 2AR 2AN 2AJ 2AF 2AB 2X 2T 2P
A B
PCM
10
11
2AS
12
10
11
2AE
12
PCM
WIRING HARNESS SIDE CONNECTOR
id010239810200
2E 2A
2I
2J 2F 2B
2K 2G 2C
2L 2H 2D