2007 NISSAN 350Z engine

DTC P1217 ENGINE OVER TEMPERATURE
EC-555
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Revision: 2006 November2007 350Z
4. CHECK INTERMITTENT INCIDENT
Perform EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connectors.
Main 12 Causes of OverheatingNBS000DK
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-6, "
OVERHEATING CAUSE ANALYSIS" . 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-12
3
Coolant level
Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckCO-10
4
Radiator cap
Pressure tester 88 - 127 kPa
(0.90 - 1.30 kg/cm2 , 12.8
- 18.4 psi) (Limit)CO-15
ON*25
Coolant leaks
Visual No leaksCO-10
ON*26
Thermostat
Touch the upper and
lower radiator hosesBoth hoses should be hotCO-26
ON*17
Cooling fan
CONSULT-III Operating See trouble diagnosis for
DTC P1217 (EC-543
).
OFF 8

Combustion gas leak
Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39
Coolant temperature
gauge
Visual Gauge less than 3/4
when driving—

Coolant overflow to
reservoir tank
Visual No overflow during driving
and idlingCO-10
OFF*410
Coolant return from
reservoir tank to radia-
tor
Visual Should be initial level in
reservoir tankCO-10
OFF 11
Cylinder head
Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-89
12
Cylinder block and pis-
tons
Visual No scuffing on cylinder
walls or pistonEM-107

EC-556
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 November2007 350Z
Component InspectionNBS000DL
COOLING FAN MOTORS-1 AND -2
1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motors.
Speedterminals
(+) (−)
Cooling fan motorLow 14
23
High 1 and 2 3 and 4
SEF734W

DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-561
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Revision: 2006 November2007 350Z
DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTIONPFP:16119
DescriptionNBS000C3
NOTE:
If DTC P1233 or P2101 is displayed with DTC P1238, P1290, P2100, P2119 first perform the trouble
diagnosis for DTC P1238, P2119 or P1290, P2100. Refer to EC-580, "
DTC P1238, P2119 ELECTRIC
THROTTLE CONTROL ACTUATOR" or EC-592, "DTC P1290, P2100, P2103 THROTTLE CONTROL
MOTOR RELAY" .
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 LogicNBS000C4
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureNBS000C5
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-III
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
4. If DTC is detected, go to EC-566, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1233
1233
(Bank 2)
Electric throttle control
performanceElectric throttle control function does not oper-
ate properly.

Harness or connectors
(The throttle control motor circuit is open
or shorted)

Electric throttle control actuator P2101
2101
(Bank 1)
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.

DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-563
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Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
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.)TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
2GThrottle control motor
(Open) (bank 1)[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: Fully depressed0 - 14V
[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: Fully released0 - 14V
3R/WThrottle control motor relay
power supply (bank 1)[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4BRThrottle control motor
(Close) (bank 1)[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: In the middle of releasing
operation0 - 14V
25 OR Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
52 R/WThrottle control motor relay
power supply (bank 2)[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
PBIB3539E
PBIB3540E
PBIB3541E

DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-565
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Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
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.)TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3R/WThrottle control motor relay
power supply (bank 1)[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
25 OR Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
49 L/BThrottle control motor
(Close) (bank 2)[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: In the middle of releasing
operation0 - 14V
50 PU/WThrottle control motor
(Open) (bank 2)[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: Fully depressed0 - 14V
[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: Fully released0 - 14V
52 R/WThrottle control motor relay
power supply (bank 2)[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
PBIB3541E
PBIB3539E
PBIB3540E

EC-568
DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
Revision: 2006 November2007 350Z
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E12, F3

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.
9. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connectors.
10. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> Repair or replace.
1. Electric throttle control acutator
(bank 1)2. Electric throttle control acutator
(bank 2)
BankElectric throttle control
actuator terminalECM terminal Continuity
112 Should exist
4 Should not exist
22 Should not exist
4 Should exist
2149 Should not exist
50 Should exist
249 Should exist
50 Should not exist
PBIB3504E

DTC P1236, P2118 THROTTLE CONTROL MOTOR
EC-571
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Revision: 2006 November2007 350Z
DTC P1236, P2118 THROTTLE CONTROL MOTORPFP:16119
Component DescriptionNBS000CG
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 LogicNBS000CH
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 MIL lights up.
DTC Confirmation ProcedureNBS000CI
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-III
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
4. If DTC is detected, go to EC-576, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1236
1236
(Bank 2)
Throttle control motor
circuit shortECM detects short in both circuits between
ECM and throttle control motor.

Harness or connectors
(The throttle control motor circuit is
shorted.)

Electric throttle control actuator
(Throttle control motor) P2118
2118
(Bank 1)
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.

DTC P1236, P2118 THROTTLE CONTROL MOTOR
EC-573
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EC
Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
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.)TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
2GThrottle control motor
(Open) (bank 1)[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: Fully depressed0 - 14V
[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: Fully released0 - 14V
3R/WThrottle control motor relay
power supply (bank 1)[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4BRThrottle control motor
(Close) (bank 1)[Ignition switch: ON]

Engine stopped

Shift lever: D (A/T) or 1st (M/T)

Accelerator pedal: In the middle of releasing
operation0 - 14V
25 OR Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
52 R/WThrottle control motor relay
power supply (bank 2)[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
PBIB3539E
PBIB3540E
PBIB3541E