Diagnostic Procedure

INSPECTION START
Turn ignition switch to START.

Is any cylinder ignited?

Yes or No

Yes (With CONSULT-II): GO TO 2.

Yes (Without CONSULT-II): GO TO 3.

No: GO TO 7.
CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
3. Make sure that each circuit produces a momentary engine speed drop.
  
  Fig 1: CONSULT-II Display - ACTIVE TEST
  Courtesy of NISSAN NORTH AMERICA, INC.
OK or NG

OK: INSPECTION END

NG: GO TO 7.

CHECK FUNCTION OF FUEL INJECTOR-I

Without CONSULT-II

Stop engine.
Disconnect harness connector F29, F201.
Turn ignition switch ON.

Fig 2: Identifying Harness Connector F29, F201
Courtesy of NISSAN NORTH AMERICA, INC.
Check voltage between harness connector F29 terminal 5 and ground with CONSULT-II or tester.
Voltage: Battery voltage
Turn ignition switch OFF.
Disconnect ECM harness connector.

Check harness continuity between harness connector F29 terminals and ECM terminals as follows.

Refer to WIRING DIAGRAM.

Fig 3: Checking Harness Continuity Between Harness Connector F29 Terminals And ECM Terminals

Courtesy of NISSAN NORTH AMERICA, INC.

TERMINALS CONTINUITY CHART

Cylinder	Harness connector F29 terminal	ECM terminal
1	6	23
3	2	22
5	1	21

Continuity should exist.

Also check harness for short to ground and short to power.

OK or NG

OK: GO TO 5.

NG: GO TO 4.

DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M82, F102
- Fuse block (J/B) connector M1
- 10A fuse
- Harness for open or short between harness connector F29 and fuse
- Harness for open or short between harness connector F29 and ECM
: Repair open circuit or short to ground or short to power in harness or connectors.

CHECK FUNCTION OF FUEL INJECTOR-II

Provide battery voltage between harness connector F201 as follows and then interrupt it. Listen to each fuel injector operating sound.

TERMINALS VOLTAGE CHART

Cylinder	Harness connector F201 terminal
Cylinder	(+)	(-)
1	5	6
3	5	2
5	5	1

Operating sound should exist.

OK or NG

OK: GO TO 6.

NG: GO TO 7.

Fig 4: Applying Battery Voltage Between Harness Connector F201

Courtesy of NISSAN NORTH AMERICA, INC.

CHECK FUNCTION OF FUEL INJECTOR-III
1. Reconnect all harness connector disconnected.
2. Start engine.
3. Listen to fuel injectors No. 2, No. 4, No. 6 operating sound.
  Clicking noise should exist.
OK or NG

OK: INSPECTION END

NG: GO TO 7.

Fig 5: Checking Fuel Injector
Courtesy of NISSAN NORTH AMERICA, INC.
CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
  
  Fig 6: Identifying Fuel Injector Harness Connector
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with CONSULT-II or tester.
  Voltage: Battery voltage
OK or NG

OK: GO TO 9.

NG: GO TO 8.

Fig 7: Checking Voltage Between Fuel Injector Terminal 1 And Ground
Courtesy of NISSAN NORTH AMERICA, INC.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M82, F102
- Harness connectors F201, F29
- Fuse block (J/B) connector M1
- 10A fuse
- Harness for open or short between fuel injector and fuse
: Repair harness or connectors.
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 21, 22, 23, 40, 41, 42. Refer to WIRING DIAGRAM.
  Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 11.

NG: GO TO 10.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F29, F201
- Harness for open or short between fuel injector and ECM
: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK FUEL INJECTOR
Refer to , "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 12.

NG: Replace fuel injector.
CHECK INTERMITTENT INCIDENT
Refer to , "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END