Connector NISSAN TEANA 2003 Service Manual

EC-562
[VQ]
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAYPFP:16119
Component DescriptionBBS00528
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 battery 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-II Reference Value in Data Monitor ModeBBS00529
Specification data are reference values.
On Board Diagnosis LogicBBS0052A
These self-diagnoses have 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 ProcedureBBS0052B
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.
PROCEDURE FOR DTC P1124
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If DTC is detected, go to EC-565, "
Diagnostic Procedure" .
MONITOR ITEM CONDITION SPECIFICATION
THRTL RELAY

Ignition switch: ON ON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1124
1124Throttle control motor
relay circuit shortECM detects the throttle control motor relay is
stuck ON.

Harness or connectors
(Throttle control motor relay circuit is
shorted)

Throttle control motor relay
P1126
1126Throttle control motor
relay circuit openECM 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
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

EC-566
[VQ]
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

2. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E9.
3. Check continuity between ECM terminal 104 and IPDM E/R terminal 47.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E11, E253

Harness connectors E103, M53

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.
4. CHECK FUSE
1. Disconnect 15A fuse.
2. Check 15A fuse for blown.
OK or NG
OK >> GO TO 8.
NG >> Replace 15A fuse.
5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
Check voltage between ECM terminal 3 and ground under the fol-
lowing conditions with CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.Continuity should exist.
Ignition switch Voltage
OFF Approximately 0V
ONBattery voltage
(11 - 14V)
MBIB0028E

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.

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

DTC P1128 THROTTLE CONTROL MOTOR
EC-571
[VQ]
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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

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

DTC P1217 ENGINE OVER TEMPERATURE
EC-577
[VQ]
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On Board Diagnosis LogicBBS0052V
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to CO-34, "
Changing Engine
Coolant" . Also, replace the engine oil. Refer to LU-21, "Changing Engine Oil" .
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-15, "
Anti-Freeze Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckBBS0052W
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-581,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-581,
"Diagnostic Procedure" .
3. Turn ignition switch ON.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217Engine over tempera-
ture (Overheat)

Cooling fan does not operate properly (Over-
heat).

Cooling fan system does not operate prop-
erly (Overheat).

Engine coolant was not added to the system
using the proper filling method.

Engine coolant level is not within the speci-
fied range.

Harness or connectors
(The cooling fan circuit is open or
shorted.)

Cooling fan

IPDM E/R

Radiator hose

Radiator

Radiator cap

Water pump

Thermostat
For more information, refer to EC-584,
"Main 12 Causes of Overheating" .
SEF621W

EC-582
[VQ]
DTC P1217 ENGINE OVER TEMPERATURE

6. CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to EC-584, "
Main 12 Causes of Overheating" .
>>INSPECTION END
COOLING FAN CONTROL CIRCUIT
1. CHECK COOLILNG FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors E6.
3. Check voltage between IPDM E/R terminal 15 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.

40A fusible link

Harness for open or short between IPDM E/R and battery
>> Repair open circuit or short to ground in harness or connectors.
3. CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between IPDM E/R terminal 16 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or connectors.Voltage: Battery voltage
PBIB1681E
Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE
EC-583
[VQ]
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4. CHECK COOLING FAN MOTOR-1 CIRCUIT-I
1. Disconnect cooling fan motor-1 harness connector.
2. Check voltage between cooling fan motor-1 terminals 1, 2 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.

40A fusible link

Harness for open or short between cooling fan motor-1 and battery
>> Repair open circuit or short to ground in harness or connectors.
6. CHECK COOLING FAN MOTOR-1 CIRCUIT-II FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E5.
3. Check harness continuity between cooling fan motor-1 terminal 3 and IPDM E/R terminal 8, cooling fan
motor-1 terminal 4 and IPDM E/R terminals 11, 12.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2130E
Voltage: Battery voltage
PBIB1670E
Continuity should exist.

EC-584
[VQ]
DTC P1217 ENGINE OVER TEMPERATURE

7. CHECK COOLING FAN MOTOR-2 CIRCUIT-I FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect cooling fan motor-2 harness connector.
3. Check harness continuity between cooling fan motor-2 terminals
3, 4 and ground.
Refer to Wiring Diagram.
4. Also check harness short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to power in harness or con-
nectors.
8. CHECK COOLING FAN MOTOR-2 CIRCUIT-II FOR OPEN AND SHORT
1. Check harness continuity between cooling fan motor-2 terminal 1 and IPDM E/R terminal 13, cooling fan
motor-2 terminal 2 and IPDM E/R terminals 10, 14.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK COOLING FAN MOTORS
Refer to EC-585, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace cooling fan motors.
10. CHECK INTERMITTENT INCIDENT
Perform 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 connector.
Main 12 Causes of OverheatingBBS0052Z
Continuity should exist.
PBIB2130E
Continuity should exist.
Engine Step Inspection item Equipment Standard Reference page
OFF 1

Blocked radiator

Blocked condenser

Blocked radiator grille

Blocked bumper

Visual No blocking —
2

Coolant mixture
Coolant tester 50 - 50% coolant mixtureMA-15, "Anti-Freeze
Coolant Mixture Ratio"
3
Coolant level
Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckCO-34, "LEVEL CHECK"
4
Radiator cap
Pressure tester 78 - 98 kPa
(0.78 - 0.98 bar, 0.8 - 1.0
kg/cm
2 , 9 - 14 psi) (Limit)CO-38, "
Checking Radia-
tor Cap"