Throttle Actuator Inspection; Resistance Inspection; Circuit Open/Short Inspection - Mazda CX-7 2007 Workshop Manual

4. Verify that the airflow is as indicated in the table.
• If there is any malfunction, replace the air bypass valve.
Vacuum Valve operation
(kPa {mmHg, inHg})
–66 {–496, –20}
or more
–49 {–367, –14}
or less
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THROTTLE ACTUATOR INSPECTION[L3 WITH TC]
WM: THROTTLE ACTUATOR
Note
• Perform the following inspection only when directed.

Resistance Inspection

1. Disconnect the negative battery cable.
2. Disconnect the throttle body connector.
3. Measure the resistance between the throttle actuator terminals using a tester.
• If not as specified, replace the throttle body. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/
INSTALLATION[L3 WITH TC].)
• If as specified, carry out the "Circuit Open/Short Inspection".
Specification
Ambient temperature (°C {°F})
Approx. 20 {68}

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH TC].)
2. Inspect the following wiring harnesses for an
open or short circuit (continuity check).
2BE 2BA 2AW 2AS 2AO 2AK 2AG 2AC 2Y 2U 2Q 2M
2BF 2BB 2AX 2AT 2AP 2AL 2AH 2AD 2Z 2V 2R 2N
2BG 2BC 2AY 2AU 2AQ 2AM 2AI 2AE 2AA 2W 2S 2O
2BH 2BD 2AZ 2AV 2AR 2AN 2AJ 2AF 2AB 2X 2T 2P
Open circuit
• If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
— Throttle actuator terminal F and PCM terminal 2A
— Throttle actuator terminal E and PCM terminal 2B
Short circuit
• If there is continuity, there is a short circuit. Repair or replace the wiring harness.
— Throttle actuator terminal F and power supply
— Throttle actuator terminal F and ground
— Throttle actuator terminal E and power supply
— Throttle actuator terminal E and ground
End Of Sie
WM: VARIABLE TUMBLE SHUTTER VALVE ACTUATOR
01-13–12
INTAKE-AIR SYSTEM [L3 WITH TC]
Airflow between
condition port A— B
Open Yes
Closed No
Resistance (ohm)
0.3— 100
WIRING HARNESS-SIDE CONNECTOR
2I 2E 2A
2J 2F 2B
2K 2G 2C
2L 2H 2D
THROTTLE ACTUATOR
WIRING HARNESS SIDE CONNECTOR
F
PCM
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z 1V 1R 1N
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
id011339801300
E
acxuuw00000024
1I 1E 1A
1J 1F 1B
1K 1G 1C
1T 1P 1L 1H 1D
acxuuw00000025