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DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-567
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6. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector E8.
4. Check continuity between ECM terminal 3 and IPDM E/R terminal 42.
Refer to Wiring Diagram.
5. 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 E37, F40
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.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connectors.Continuity should exist.
Page 1850 of 3502
![NISSAN TEANA 2003 Service Manual EC-568
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DTC P1128 THROTTLE CONTROL MOTOR
DTC P1128 THROTTLE CONTROL MOTORPFP:16119
Component DescriptionBBS0052E
The throttle control motor is operated by the ECM and it opens and closes the thr NISSAN TEANA 2003 Service Manual EC-568
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
DTC P1128 THROTTLE CONTROL MOTORPFP:16119
Component DescriptionBBS0052E
The throttle control motor is operated by the ECM and it opens and closes the thr](/manual-img/5/57392/w960_57392-1849.png)
EC-568
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
DTC P1128 THROTTLE CONTROL MOTORPFP:16119
Component DescriptionBBS0052E
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 LogicBBS0052F
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureBBS0052G
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.
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-570, "
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-570, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1128
1128Throttle control motor
circuit shortECM 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)
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 1851 of 3502
DTC P1128 THROTTLE CONTROL MOTOR
EC-569
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Wiring DiagramBBS0052H
TBWM1457E
Page 1852 of 3502
![NISSAN TEANA 2003 Service Manual EC-570
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use EC NISSAN TEANA 2003 Service Manual EC-570
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use EC](/manual-img/5/57392/w960_57392-1851.png)
EC-570
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureBBS0052I
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-457, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3 G/WThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4LThrottle control motor
(Close)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Released0 - 14V
5YThrottle control motor
(Open)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Fully depressed0 - 14V
104 O Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
PBIB1104E
PBIB1105E
PBIB2160E
Page 1853 of 3502
![NISSAN TEANA 2003 Service Manual DTC P1128 THROTTLE CONTROL MOTOR
EC-571
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2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect electric throttle control actuator harnes NISSAN TEANA 2003 Service Manual DTC P1128 THROTTLE CONTROL MOTOR
EC-571
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2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect electric throttle control actuator harnes](/manual-img/5/57392/w960_57392-1852.png)
DTC P1128 THROTTLE CONTROL MOTOR
EC-571
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2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect electric throttle control actuator harness connector.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. CHECK THROTTLE CONTROL MOTOR
Refer to EC-571, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness or connectors.
5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-389, "
Throttle Valve Closed Position Learning" .
3. Perform EC-389, "
Idle Air Volume Learning" .
>>INSPECTION END
Component InspectionBBS0052J
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between terminals 3 and 6.
3. If NG, replace electric throttle control actuator and go to next
step.
4. Perform EC-389, "
Throttle Valve Closed Position Learning" .
5. Perform EC-389, "
Idle Air Volume Learning" .
Electric throttle control
actuator terminalECM terminal Continuity
35 Should not exist
4 Should exist
65 Should exist
4 Should not exist
PBIB2122E
Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)]
PBIB0095E
Page 1854 of 3502
EC-572
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DTC P1128 THROTTLE CONTROL MOTOR
Removal and InstallationBBS0052K
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .
Page 1855 of 3502
![NISSAN TEANA 2003 Service Manual DTC P1211 TCS CONTROL UNIT
EC-573
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DTC P1211 TCS CONTROL UNITPFP:47850
DescriptionBBS0052L
The malfunction information related to TCS is transferred through the CAN com NISSAN TEANA 2003 Service Manual DTC P1211 TCS CONTROL UNIT
EC-573
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DTC P1211 TCS CONTROL UNITPFP:47850
DescriptionBBS0052L
The malfunction information related to TCS is transferred through the CAN com](/manual-img/5/57392/w960_57392-1854.png)
DTC P1211 TCS CONTROL UNIT
EC-573
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DTC P1211 TCS CONTROL UNITPFP:47850
DescriptionBBS0052L
The malfunction information related to TCS is transferred through the CAN communication line from “ABS
actuator and electric unit (control unit)” to ECM.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
On Board Diagnosis LogicBBS0052M
Freeze frame data is not stored in the ECM for this self-diagnosis.
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureBBS0052N
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 60 seconds.
4. If 1st trip DTC is detected, go to EC-573, "
Diagnostic Procedure"
.
WITHOUT CONSULT-II
1. Start engine and let it idle for at least 60 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If 1st trip DTC is detected, go to EC-573, "
Diagnostic Procedure" .
Diagnostic ProcedureBBS0052O
Go to BRC-44, "TROUBLE DIAGNOSIS" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1211
1211TCS control unitECM receives a malfunction information from
“ABS actuator and electric unit (control unit)”.
ABS actuator and electric unit (control
unit)
TCS related parts
SEF058Y
Page 1856 of 3502
![NISSAN TEANA 2003 Service Manual EC-574
[VQ]
DTC P1212 TCS COMMUNICATION LINE
DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionBBS0052P
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosi NISSAN TEANA 2003 Service Manual EC-574
[VQ]
DTC P1212 TCS COMMUNICATION LINE
DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionBBS0052P
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosi](/manual-img/5/57392/w960_57392-1855.png)
EC-574
[VQ]
DTC P1212 TCS COMMUNICATION LINE
DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionBBS0052P
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-458, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
On Board Diagnosis LogicBBS0052Q
Freeze frame data is not stored in the ECM for this self-diagnosis.
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureBBS0052R
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 10 seconds.
4. If 1st trip DTC is detected, go to EC-574, "
Diagnostic Procedure"
.
WITHOUT CONSULT-II
1. Start engine and let it idle for at least 10 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If 1st trip DTC is detected, go to EC-574, "
Diagnostic Procedure" .
Diagnostic ProcedureBBS0052S
Go to BRC-44, "TROUBLE DIAGNOSIS" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212
1212TCS communication
lineECM can not receive the information
from “ABS actuator and electric unit (con-
trol unit)” continuously.
Harness or connectors
(The CAN communication line is open or
shorted.)
ABS actuator and electric unit (control unit)
Dead (Weak) battery
SEF058Y