NISSAN LATIO 2009 Service Repair Manual

EC
NP
O
Wiring Diagram
INFOID:0000000004780698
Diagnosis Procedure INFOID:0000000004780303 B

OK >> GO TO 5.
NG >> GO TO 2. YES >> GO TO 4.
NO >> GO TO 3. YES >> GO TO 8.
NO >> Replace 15 A fuse. OK >> GO TO 8.
NG >> GO TO 6. ECM
Ground Condition Voltage
Connector Terminal
F10 2 Ground Ignition switch: OFF Approximately 0 V
Ignition switch: ON Battery voltage

EC
NP
O
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 8.
NO >> GO TO 7. Diagnosis Procedure " .
Is the inspection result normal? YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors. ECM IPDM E/R
Continuity
Connector Terminal Connector Terminal
F10 2 E43 8 Existed

DTC Logic " .
• If DTC P2101 is displayed with DTC P2119, first pe rform the trouble diagnosis for DTC P2119. Refer
to EC-397, " DTC Logic " .
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-389, " Diagnosis Procedure " .
NO >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2101 Electric throttle control
performance Electric throttle control function does not
operate properly. • Harness or connectors
(Throttle control motor circuit is open or shorted)
• Electric throttle control actuator

EC
NP
O
Wiring Diagram
INFOID:0000000004780699
Diagnosis Procedure INFOID:0000000004780306Ground Inspection " .
Is the inspection result normal? B

EC-390< COMPONENT DIAGNOSIS >
[HR16DE]
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
YES >> GO TO 2.
NO >> Repair or replace ground connection. 2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1. Check the voltage between ECM harness connector and ground under the following conditions.
Is the inspection result normal? YES >> GO TO 9.
NO >> GO TO 3. 3.
CHECK THROTTLE CONTROL MOTO R RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harnes s connector and IPDM E/R harness connector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4. 4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors. 5.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1. Check the continuity between ECM harnes s connector and IPDM E/R harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 7.
NO >> GO TO 6. 6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
ECM
Ground Condition Voltage
Connector Terminal
F10 2 Ground Ignition switch: OFF Approx. 0 V
Ignition switch: ON Battery voltage PBIA9568J
IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E46 46 F10 15 Existed IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E43 8 F10 2 Existed

P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-391
< COMPONENT DIAGNOSIS >
[HR16DE] C
D E
F
G H
I
J
K L
M A EC
NP
O 7.
CHECK FUSE
1. Disconnect 15 A fuse (No. 52) from IPDM E/R.
2. Check 15 A fuse for blown.
Is the inspection result normal? YES >> GO TO 8.
NO >> Replace 15 A fuse. 8.
CHECK INTERMITTENT INCIDENT
Refer to EC-120, " Diagnosis Procedure " .
Is the inspection result normal? YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors. 9.
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect electric throttle c ontrol actuator harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 10.
NO >> Repair or replace. 10.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is c aught between the throttle valve (1)
and the housing.
- Electric throttle control actuator (2)
Is the inspection result normal? YES >> GO TO 11.
NO >> Remove the foreign matter and clean the electric throttle control actuator inside. 11.
CHECK THROTTLE CONTROL MOTOR
Refer to EC-392, " Component Inspection " .
Is the inspection result normal? YES >> GO TO 12.
NO >> GO TO 13. 12.
CHECK INTERMITTENT INCIDENT
Refer to EC-120, " Diagnosis Procedure " .
Is the inspection result normal? YES >> GO TO 13.Electric throttle control actuator ECM
Continuity
Connector Terminal Connector Terminal
F7 5
F10 1 Not existed
4 Existed
6 1 Existed
4 Not existed JMBIA0447ZZ

Special Repair Requirement " .
>> INSPECTION END
Component Inspection INFOID:0000000004780307YES >> INSPECTION END
NO >> GO TO 2. Special Repair Requirement " .
>> INSPECTION END
Special Repair Requirement INFOID:0000000004780461THROTTLE VALVE CLOSED POSITION LE
ARNING : Special Repair Requirement "
>> GO TO 2.
IDLE AIR VOLUME LEARNING : Special Repair Requirement "
>> END
Terminals Resistance
5 and 6 Approx. 1 - 15 Ω [at 25 °C (77 °F)]

EC
NP
O
P2118 THROTTLE CONTROL MOTOR
Description INFOID:0000000004780309
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM. ECM controls the throttle valve opening angle in response to driving conditions via the throt-
tle control motor.
DTC Logic INFOID:0000000004780310
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-394, " Diagnosis Procedure " .
NO >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2118 Throttle control motor
circuit short ECM detects short in both circuits between
ECM and throttle control motor. • Harness or connectors
(Throttle control motor circuit is shorted.)
• Electric throttle control actuator
(Throttle control motor)

Ground Inspection " .
Is the inspection result normal? B