2009 NISSAN LATIO Service Repair Manual

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Page 2281 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
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DTC P2100, P2103 THROTTLE
CONTROL MOTOR RELAY
Component Description INFOID:0000000004537449
Power supply for the throttle control motor is provided to the ECM via throttle control motor relay

EC
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DTC P2100, P2103 THROTTLE
CONTROL MOTOR RELAY
Component Description INFOID:0000000004537449
Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and batte ry voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004537450
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004537451
These self-diagnoses have one trip detection logic.
FAIL-SAFE MODE When the malfunction is detected, ECM ent ers fail-safe mode and the MIL lights up.
DTC Confirmation Procedure INFOID:0000000004537452
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR DTC P2100 1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check 1st trip DTC.
4. If DTC is detected, go to EC-927, " Diagnosis Procedure " .
PROCEDURE FOR DTC P2103 TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
1. Turn ignition switch ON and wait at least 1 second.
2. Check DTC.
3. If DTC is detected, go to EC-927, " Diagnosis Procedure " .
MONITOR ITEM CONDITION SPECIFICATION
THRTL RELAY • Ignition switch: ON ON DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2100
2100 Throttle control motor
relay circuit open ECM detects a voltage of power source for
throttle control motor is excessively low. • Harness or connectors
(Throttle control motor relay circuit is
open)
• Throttle control motor relay
P2103
2103 Throttle control motor
relay circuit short ECM detects the throttle
control motor relay is
stuck ON. • Harness or connectors
(Throttle control motor relay circuit is
shorted)
• Throttle control motor relay Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) b y the return
spring.

Page 2282 of 4331

NISSAN LATIO 2009 Service Repair Manual B

Page 2283 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2100, P2103 THROTTLE
CONTROL MOTOR RELAY
EC-927
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
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M A EC
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Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so

Page 2284 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-928< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2100, P2103 THROTTLE
CONTROL MOTOR RELAY3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short be

Page 2285 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
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DTC P2101 ELECTRIC THRO
TTLE CONTROL FUNCTION
Description INFOID:0000000004537455
NOTE:
If DTC P2101 is displayed with DTC P2100 or P2119, first perform the trouble diagnosis for DTC P2100
or

Page 2286 of 4331

Page 2287 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-931
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
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J
K L
M A EC
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Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so ma

Page 2288 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-932< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
Check voltage between ECM terminal 2 and ground under the fol-
lowing conditions with CONSULT-III or tes

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