Page 679 of 720

ASCD BRAKE SWITCH
EC-679
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
4. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector E101
10A fuse
Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ASCD brake switch terminal 2 and ASCD clutch switch terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK ASCD BRAKE SWITCH
Refer to EC-680, "
Component Inspection"
OK or NG
OK >> GO TO 10.
NG >> Replace ASCD brake switch.
7. CHECK ASCD CLUTCH SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ASCD clutch switch terminal 2 and ECM terminal 126.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E108, M15
Harness for open or short between ECM and ASCD clutch switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK ASCD CLUTCH SWITCH
Refer to EC-680, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace ASCD clutch switch.Continuity should exist.
Continuity should exist.
Page 682 of 720
EC-682
ASCD INDICATOR
Revision: 2006 November2007 350Z
Wiring DiagramNBS000IG
TBWT1677E
Page 687 of 720
FUEL INJECTOR
EC-687
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
Wiring DiagramNBS000HS
TBWT1678E
Page 689 of 720

FUEL INJECTOR
EC-689
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
3. CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with
CONSULT-III or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M72, F102
Fuse block (J/B) connector M4
10A fuse
Harness for open or short between fuel injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between fuel injector terminal 2 and ECM terminals 81, 82, 85, 86, 89, 90.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
1 : Ignition coil No.5 (with power transistor)
2 : Ignition col No.3 (with power transistor)
3 : Ignition coil No.1 (with power transistor)
4 : Condenser
5 : Fuel injector No.3
6 : Fuel injector No.1
7 : Fuel injector No.2
8 : Fuel injector No.4
9 : Ignition coil No.2 (with power transistor)
10 : Ignition coil No.4 (with power transistor)
11 : Ignition coil No.6 (with power transistor)
12 : Fuel injector No.6
13 : Fuel injector No.5
Voltage: Battery voltage
PBIB3512E
PBIB0582E
Continuity should exist.
Page 692 of 720
EC-692
FUEL PUMP
Revision: 2006 November2007 350Z
Wiring DiagramNBS000HY
TBWT1679E
Page 694 of 720

EC-694
FUEL PUMP
Revision: 2006 November2007 350Z
3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 40 and ECM terminal 22.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 15.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E10, F1
Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK CONDENSER POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect condenser harness connector.
4. Turn ignition switch ON.
5. Check voltage between condenser terminal 1 and ground with
CONSULT-III or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.Continuity should exist.
Voltage: Battery voltage should exist for 1 sec-
ond after ignition switch is turned ON.
PBIB0624E
Page 695 of 720

FUEL PUMP
EC-695
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
7. CHECK CONDENSER POWER SUPPLY CIRCUIT-II
1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 39 and condenser terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 15.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E107, B3
Harness for open or short between IPDM E/R and condenser
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK CONDENSER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10
10. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B43, T1 (Coupe models)
Harness connectors B39, D102 (Coupe models)
Harness connectors B61, T23 (Roadster models)
Harness for open or short between condenser and ground
>> Repair open circuit or short to power in harness or connectors.
11 . CHECK CONDENSER
Refer to EC-697, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace condenser.Continuity should exist.
Continuity should exist.
Page 696 of 720

EC-696
FUEL PUMP
Revision: 2006 November2007 350Z
12. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector.
2. Disconnect harness connectors E107, B3.
3. Check harness continuity between the following;
“fuel level sensor unit and fuel pump” terminal 1 and harness
connector B3 terminal 4,
“fuel level sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.
Harness connector B3
Harness connectors B43, T1 (Coupe models)
Harness connectors B39, D102 (Coupe models)
Harness connectors B61, T23 (Roadster models)
Harness for open or short between “fuel level sensor unit and fuel pump” and harness connector B3
Harness for open or short between “fuel level sensor unit and fuel pump” and ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK FUEL PUMP
Refer to EC-697, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace “fuel level sensor unit and fuel pump”.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair or replace harness or connectors.Continuity should exist.
PBIB1665E