2003 NISSAN TEANA Service Manual

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Page 1481 of 3502

NISSAN TEANA 2003 Service Manual DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-199
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2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-47,

Page 1482 of 3502

NISSAN TEANA 2003 Service Manual EC-200
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTIONPFP:16119
DescriptionBBS005FN
NOTE:
If DTC P1122 is displayed with DTC P1121 or 1126, first perfo

EC-200
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTIONPFP:16119
DescriptionBBS005FN
NOTE:
If DTC P1122 is displayed with DTC P1121 or 1126, first perform the trouble diagnosis for DTC P1121 or
P1126. Refer to EC-200
or EC-207 .
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
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 to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis LogicBBS005FO
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureBBS005FP
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V when engine
is running.
WITH CONSULT-II
1. Turn ignition switch ON and wait at least 2 seconds.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If DTC is detected, go to EC-202, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
5. If DTC is detected, go to EC-202, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1122
1122Electric throttle control
performanceElectric throttle control function does not
operate properly.
Harness or connectors
(Throttle control motor circuit is open or
shorted.)
Electric throttle control actuator
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) by the return
spring.
SEF058Y

Page 1483 of 3502

NISSAN TEANA 2003 Service Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-201
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Wiring DiagramBBS005FQ
TBWM1492E

Page 1484 of 3502

NISSAN TEANA 2003 Service Manual EC-202
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
D

Page 1485 of 3502

NISSAN TEANA 2003 Service Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-203
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2. CHECK THROTTLE CONTROL MOTOR RELAY SIGNAL CIRCUIT
Check voltage between ECM terminal 3 and ground under the fol-

Page 1486 of 3502

NISSAN TEANA 2003 Service Manual EC-204
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

6. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E

Page 1487 of 3502

NISSAN TEANA 2003 Service Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-205
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10. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect

Page 1488 of 3502

NISSAN TEANA 2003 Service Manual EC-206
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

Component InspectionBBS005FS
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
2. Check resistance b

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