2003 NISSAN ALMERA N16 relay

EC-334
[QG (WITH EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
*4: After 60 minutes of cool down time.
For more information, refer to LC-23.
Component InspectionEBS00KBJ
COOLING FAN RELAY-1
1. Apply 12V direct current between relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace cooling fan relay.
COOLING FAN MOTORS-1 AND -2
1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
3. If NG, replace cooling fan motor.
Condition Continuity
12V direct current supply
between terminals 1 and 2Ye s
OFF No
PBIB0077E
Terminals
(+) (−)
Cooling fan motor 1 2
MBIB0252E

IGNITION SIGNAL
EC-367
[QG (WITH EURO-OBD)]
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
111 W / GECM relay
(Self shut-off)[Engine is running]
[Ignition switch “OFF”]
●For a few seconds after turning ignition
switch “OFF”.0 - 1.0V
[Ignition switch “OFF”]
●More than a few seconds passed after turn-
ing ignition switch “OFF”.BATTERY VOLTAGE
(11 - 14V)
11 9
120W
WPower supply for ECM[Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)

IGNITION SIGNAL
EC-371
[QG (WITH EURO-OBD)]
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6.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch “OFF”.
2. Disconnect ECM relay.
3. Check harness continuity between ECM relay terminal 7 and
condenser terminal 1.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E225, F43
●Harness for open or short between ECM relay and condenser
>> Repair open circuit or short to ground or short to power in harness connectors.
8.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
Check voltage between ECM relay terminal 6 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9.DETECT MALFUNCTIONING PART
Check the following.
●15A fuse
●Harness for open or short between ECM relay and battery
>> Repair or replace harness or connectors.
10.CHECK ECM RELAY
Refer to EC-373, "
Component Inspection" .
OK or NG
OK >> GO TO 18.
NG >> Replace ECM relay.Continuity should exist.
MBIB0247E
Voltage: Battery voltage
PBIB0625E

EC-372
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
11 . CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 12.
NG >> Repair open circuit or short to power in harness or connector.
12. CHECK CONDENSER
Refer to EC-373, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace condenser.
13. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch “OFF”.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil harness connector.
4. Turn ignition switch “ON”.
5. Check voltage between ignition coil terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 15.
NG >> GO TO 14.
14. DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between ignition coil and ECM relay
>> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist.
M B I B 0 111 E
Voltage: Battery voltage
SEF107S

IGNITION SIGNAL
EC-373
[QG (WITH EURO-OBD)]
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15.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between ignition coil terminal 2 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 16.
NG >> Repair open circuit or short to power in harness or connectors.
16.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 60, 61, 79, 80 and ignition coil terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 17.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
17.CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to EC-373, "
Component Inspection" .
OK or NG
OK >> GO TO 18.
NG >> Replace ignition coil with power transistor.
18.CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00KCV
ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.
CONDENSER
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.Continuity should exist.
Continuity should exist.
Condition Continuity
12V direct current supply
between terminals 1 and 2Ye s
OFF No
PBIB0077E

FUEL PUMP CIRCUIT
EC-381
[QG (WITH EURO-OBD)]
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FUEL PUMP CIRCUITPFP:17042
DescriptionEBS00KD3
SYSTEM DESCRIPTION
*: The ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned on to improve engine
startability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-
shaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the
engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump
operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel
pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump.
COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-II Reference Value in Data Monitor ModeEBS00KD4
Specification data are reference values.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
*
Fuel pump control Fuel pump relay
Battery
Battery voltage
*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and crankingOperates.
When engine is stoppedStops in 1.5 seconds.
Except as shown aboveStops.
MBIB0046E
MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY
●For 1 seconds after turning ignition switch ON
●Engine running or crankingON
●Except above conditions OFF

FUEL PUMP CIRCUIT
EC-383
[QG (WITH EURO-OBD)]
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS00KD6
1.CHECK OVERALL FUNCTION
1. Turn ignition switch “ON”.
2. Pinch fuel feed hose with two fingers.
Fuel pressure pulsation should be felt on the fuel hose for 1
second after ignition switch is turned “ON”.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK FUEL PUMP RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect fuel pump relay.
3. Turn ignition switch “ON”.
4. Check voltage between fuel pump relay terminals 1, 5 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
113 B/P Fuel pump relay[Ignition switch “ON”]
●For 1 seconds after turning ignition switch “ON”.
[Engine is running]0 - 1.0V
[Ignition switch “ON”]
●More than 1 seconds after turning ignition switch
“ON”.BATTERY VOLTAGE
(11 - 14V)
MBIB0114E
MBIB0257E
Voltage: Battery voltage
PBIB0303E

EC-384
[QG (WITH EURO-OBD)]
FUEL PUMP CIRCUIT
3. DETECT MALFUNCTIONING PART
Check the following.
●Fuse block (J/B) connector B4
●10A fuse
●15A fuse
●Harness for open or short between fuel pump relay and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect fuel level sensor unit and fuel pump harness con-
nector.
3. Check harness continuity between fuel pump relay terminal 3
and fuel level sensor unit and fuel pump terminal 5, fuel level
sensor unit and fuel pump terminal 3 and body ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors B61, D91 (Hatchback models with power door lock)
●Harness connectors B62, D92 (Hatchback models without power door lock)
●Harness for open or short between fuel level sensor unit and fuel pump and fuel pump relay
●Harness for open or short between fuel level sensor unit and fuel pump and body ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK FUEL PUMP RELAY OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 113 and fuel pump relay terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.Continuity should exist.
MBIB0115E
Continuity should exist.