engine control NISSAN TIIDA 2009 Service Repair Manual

EC-412< COMPONENT DIAGNOSIS >
[HR16DE]
P2138 APP SENSOR
P2138 APP SENSOR
Description INFOID:0000000004780333
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
The ECM judges the current opening angle of the accelerator pedal
from these signals and controls the throttle control motor based on
these signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The
ECM uses this signal for the engine operation such as fuel cut.
DTC Logic INFOID:0000000004780334
DTC DETECTION LOGIC
NOTE:
If DTC P2138 is displayed with DTC P0643, first pe rform the trouble diagnosis for DTC P0643. Refer to
EC-358, " DTC Logic " .
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2. 2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected? YES >> Go to
EC-413, " Diagnosis Procedure " .
NO >> INSPECTION END PBIB1741E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2138 Accelerator pedal position
sensor circuit range/per-
formance Rationally incorrect voltage is sent to ECM
compared with the signals from APP sensor
1 and APP sensor 2. • Harness or connector
(APP sensor 1 or 2 circuit is open or
shorted.)
[Crankshaft position sensor (POS) circuit
is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
(EVAP control system sensor circuit is
shorted.)
• Accelerator pedal position sensor
(APP sensor 1 or 2)
• Crankshaft position sensor (POS)
• Refrigerant pressure sensor
• EVAP control system pressure sensor

P2A00 A/F SENSOR 1
EC-417
< COMPONENT DIAGNOSIS >
[HR16DE] C
D E
F
G H
I
J
K L
M A EC
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P2A00 A/F SENSOR 1
Description INFOID:0000000004780338
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise m easurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of about 800 °C
(1,472 °F).
DTC Logic INFOID:0000000004780339
DTC DETECTION LOGIC To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be
shifted to LEAN side or RICH side.
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 2. 2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Clear the mixture ratio self-learning value. Refer to EC-33, " MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement " .
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load.
4. Let engine idle for 1 minute.
5. Keep engine speed between 2,500 and 3,000 rpm for 20 minutes. JMBIA0112GB
PBIB3354E
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P2A00 Air fuel ratio (A/F) sensor 1
circuit range/performance • The output voltage computed by ECM from the
A/F sensor 1 signal is shifted to the lean side for
a specified period.
• The A/F signal computed by ECM from the A/F sensor 1 signal is shifted to the rich side for a
specified period. • A/F sensor 1
• A/F sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leaks

YES >> INSPECTION END
NO >> EC-435, " Diagnosis Procedure " .
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Stops.

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9 P
EVAP canister purge volume
control solenoid valve [Engine is running]
• Idle speed
• Accelerator pedal: Not depressed even
slightly, after engine starting. BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Engine speed: About 2,000 rpm (More than 100 seconds after starting engine) BATTERY VOLTAGE
(11 - 14 V)
10 11 B
B ECM ground
[Engine is running]
• Idle speed Body ground
15 Y Throttle control motor relay [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON] 0 - 1.0 V
17
18
21
22 R
LG
G
SB Ignition signal No. 1
Ignition signal No. 2
Ignition signal No. 4
Ignition signal No. 3 [Engine is running]
• Warm-up condition
• Idle speed NOTE:
The pulse cycle changes depending on rpm
at idle. 0 - 0.3 V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm. 0.2 - 0.5 V
23 GR Fuel pump relay [Ignition switch: ON]
• For 1 second after turning ignition switch ON
[Engine is running] 0 - 1.0 V
[Ignition switch: ON]
• More than 1 second after turning ignition switch ON BATTERY VOLTAGE
(11 - 14 V)
TERMI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage) PBIA9265J

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41 GR Refrigerant pressure sensor
[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan switch: ON
(Compressor operates.) 1.0 - 4.0 V
42 V EVAP control system pres-
sure sensor [Ignition switch: ON]
Approximately 1.8 - 4.8 V
43 P Fuel tank temperature sen-
sor [Engine is running] Approximately 0 - 4.8 V
Output voltage varies with fuel
tank temperature
44 B Sensor ground
(Engine coolant temperature
sensor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
45 G Mass air flow sensor [Engine is running]
• Warm-up condition
• Idle speed 0.9 - 1.3 V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm 1.4 - 1.9 V
46 V Intake air temperature
sensor [Engine is running] Approximately 0 - 4.8 V
Output voltage varies with intake
air temperature.
48 BR Sensor ground
(Refrigerant pressure sen-
sor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
49 W A/F sensor 1 [Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm Approximately 1.8 V
Output voltage varies with air fuel
ratio.
50 W Heated oxygen sensor 2 [Engine is running]
• Revving engine from idle to 3,000 rpm quickly after the following conditions are
met.
- Engine: After warming up
- Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load. 0 - 1.0 V
51 O Sensor ground
(EVAP control system pres-
sure sensor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
52 LG Sensor ground
(Mass air flow sensor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
53 B A/F sensor 1 [Ignition switch: ON]Approximately 2.2 V
55 O Sensor ground
(Intake air temperature sen-
sor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
59 O Sensor ground
(Heated oxygen sensor 2) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
TERMI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)

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73 P
Intake valve timing control
solenoid valve [Engine is running]
• Warm-up condition
• Idle speed BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• When revving engine up to 2,000 rpm quick- ly 7 - 10 V
74 W Sensor power supply
(Refrigerant pressure
sensor) [Ignition switch: ON]
Approximately 5 V
75 BR Sensor power supply
[Crankshaft position sensor
(POS)] [Ignition switch: ON]
Approximately 5 V
76 W EVAP control system pres-
sure sensor power supply [Ignition switch: ON]
Approximately 5 V
78 O Sensor power supply
[Camshaft position sensor
(PHASE)] [Ignition switch: ON]
Approximately 5 V
83 P CAN communication line — —
84 L CAN communication line — —
88 LG DATA link connector — —
93 O Ignition switch [Ignition switch: OFF]
0V
[Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
99 R Stop lamp switch [Ignition switch: OFF]
• Brake pedal: Fully released Approximately 0 V
[Ignition switch: OFF]
• Brake pedal: Slightly depressed BATTERY VOLTAGE
(11 - 14 V)
102 SB Sensor power supply
(Accelerator pedal position
sensor 2) [Ignition switch: ON]
Approximately 5 V
103 GR Accelerator pedal position
sensor 2 [Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released 0.3 - 0.6 V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed 1.95 - 2.4 V
104 Y Sensor ground
(Accelerator pedal position
sensor 2) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0 V
105 G Power supply for ECM [Ignition switch: ON]BATTERY VOLTAGE
(11 - 14 V)
106 P Sensor power supply
(Accelerator pedal position
sensor 1) [Ignition switch: ON]
Approximately 5 V
108 B ECM ground [Engine is running]
• Idle speed Body ground
TERMI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)

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DTC RELATED ITEM
Detected items
Engine operating condition in
fail-safe mode Remarks
Malfunction indicator
lamp circuit Engine speed will not rise
more than 2,500 rpm due to
the fuel cut When there is an open circuit on MIL circuit, the ECM cannot warn the driver by
lighting up MIL when there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses
are continuously detected as NG for 5 trips, ECM warns the driver that engine
control system malfunctions and MIL circuit is open by means of operating fail-
safe function.
The fail-safe function also operates when above diagnoses except MIL circuit
are detected and demands the driver to repair the malfunction. DTC No. Detected items Engine operating condition in fail-safe mode
P0011 Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve control does not function.
P0102
P0103 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118 Engine coolant tempera-
ture sensor circuit Engine coolant temperature will be determined by ECM based on the following condition.
CONSULT-III displays the engine coolant temperature decided by ECM.
Condition Engine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START 40
°C (104 °F)
More than approx. 4 minutes after
engine starting 80
°C (176 °F)
Except as shown above 40 - 80
°C (104 - 176 °F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P0605 ECM (When ECM calculation function is malfunctioning:) ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1805 Brake switch ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
P2100
P2103 Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2101 Electric th rottle control
function ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.

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DTC Index
INFOID:0000000004780387
× :Applicable —: Not applicable
2 • P0031 P0032 Air fuel ratio (A/F) sensor 1 heater
• P0037 P0038 Heated oxygen sensor 2 heater
• P0075 Intake valve timing control solenoid valve
• P0130 P0131 P0132 P0133 P2A00 Air fuel ratio (A/F) sensor 1
• P0137 P0138 P0139 Heated oxygen sensor 2
• P0441 EVAP control system purge flow monitoring
• P0443 P0444 P0445 EVAP canister purge volume control solenoid valve
• P0447 P0448 EVAP canister vent control valve
• P0451 P0452 P0453 EVAP control system pressure sensor
• P0603 ECM power supply
• P0710 P0720 P0725 P0731 P0732 P0733 P0734 P0740 P0744 P0745 P0750 P0755 P1705 P1760 A/T related sensors,
solenoid valves and switches
• P1217 Engine over temperature (OVERHEAT)
• P1805 Brake switch
• P2100 P2103 Throttle control motor relay
• P2101 Electric throttle control function
• P2118 Throttle control motor
3 • P0011 Intake valve timing control • P0171 P0172 Fuel injection system function
• P0300 - P0304 Misfire
• P0420 Three way catalyst function
• P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)
• P0455 EVAP control system (GROSS LEAK)
• P0506 P0507 Idle speed control system
• P1148 Closed loop control
• P1421 Cold start control
• P1715 Primary speed sensor
• P2119 Electric throttle control actuator
Priority Detected items (DTC) DTC*
1
Items
(CONSULT-III screen terms) SRT code Trip MIL Reference page
CONSULT-III
GST* 2
ECM*3
U0101 0101*4
LOST COMM (TCM) — 1 ×EC-126 U0140
0140*4
LOST COMM (BCM) — 1 ×EC-128 U1001
1001*4
CAN COMM CIRCUIT — 2 — EC-126P0031 0031 A/F SEN1 HTR (B1) — 2
×EC-136 P0032 0032 A/F SEN1 HTR (B1) — 2
×EC-136 P0037 0037 HO2S2 HTR (B1) — 2
×EC-140 P0038 0038 HO2S2 HTR (B1) — 2
×EC-140 P0075 0075 INT/V TIM V/CIR-B1 — 2
×EC-144 P0101 0101 MAF SEN/CIRCUIT-B1 — 2
×EC-148 P0102 0102 MAF SEN/CIRCUIT-B1 — 1
×EC-156 P0103 0103 MAF SEN/CIRCUIT-B1 — 1
×EC-156 P0112 0112 IAT SEN/CIRCUIT-B1 — 2
×EC-162 P0113 0113 IAT SEN/CIRCUIT-B1 — 2
×EC-162 P0116 0116 ECT SEN/CIRC — 2
×EC-165 P0117 0117 ECT SEN/CIRC — 1
×EC-167

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P0460 0460 FUEL LEV SEN SLOSH — 2
×EC-342 P0461 0461 FUEL LEVEL SENSOR — 2
×EC-343 P0462 0462 FUEL LEVL SEN/CIRC — 2
×EC-345 P0463 0463 FUEL LEVL SEN/CIRC — 2
×EC-345 P0500 0500
VEH SPEED SEN/CIRC*5
— 2 ×EC-347 P0506 0506 ISC SYSTEM — 2
×EC-349 P0507 0507 ISC SYSTEM — 2
×EC-351 P0603 0603 ECM BACK UP/CIRCUIT — 2
×EC-353 P0605 0605 ECM — 1 or 2
× or — EC-355 P0607 0607 ECM —
1 (A/T)
2 (M/T) ×
(A/T)
— (M/T) EC-357 P0643 0643 SENSOR POWER/CIRC — 1
×EC-358 P0705 0705 PNP SW/CIRC — 2
×AT-91 P0710 0710
ATF TEMP SEN/CIRC*8
— 2 ×AT-96 P0720 0720
VEH SPD SEN/CIR AT*5
— 2 ×AT-101 P0725 0725 ENGINE SPEED SIG — 2
×AT-106 P0731 0731
A/T 1ST GR FNCTN*8
— 2 ×AT-110 P0732 0732
A/T 2ND GR FNCTN*8
— 2 ×AT-113 P0733 0733
A/T 3RD GR FNCTN*8
— 2 ×AT-116 P0734 0734
A/T 4TH GR FNCTN*8
— 2 ×AT-119 P0740 0740 TCC SOLENOID/CIRC — 2
×AT-124 P0744 0744 A/T TCC S/V FNCTN — 2
×AT-129 P0745 0745 L/PRESS SOL/CIRC — 2
×AT-134 P0750 0750 SFT SOL A/CIRC — 1
×AT-139 P0755 0755 SFT SOL B/CIRC — 1
×AT-144 P0850 0850 P-N POS SW/CIRCUIT — 2
×EC-362 P1148 1148 CLOSED LOOP-B1 — 1
×EC-367 P1217 1217 ENG OVER TEMP — 1
×EC-368 P1225 1225 CTP LEARNING-B1 — 2 —
EC-372P1226 1226 CTP LEARNING-B1 — 2 —
EC-374P1421 1421 COLD START CONTROL — 2
×EC-376 P1610 1610 LOCK MODE — 2 —
BL-259P1611 1611 ID DISCORD, IMMU-ECM — 2 —
BL-259P1612 1612 CHAIN OF ECM-IMMU — 2 —
BL-259P1614 1614 CHAIN OF IMMU-KEY — 2 —
BL-259P1615 1615 DIFFERENCE OF KEY — 2 —
BL-259P1715 1715 IN PULY SPEED — 2 —
EC-378P1760 1760 O/R CLTCH SOL/CIRC — 2
×AT-149 P1805 1805 BRAKE SW/CIRCUIT — 2 —
EC-380P2100 2100 ETC MOT PWR-B1 — 1
×EC-384 P2101 2101 ETC FNCTN/CIRC-B1 — 1
×EC-388 P2103 2103 ETC MOT PWR — 1
×EC-384 DTC*
1
Items
(CONSULT-III screen terms) SRT code Trip MIL Reference page
CONSULT-III
GST* 2
ECM*3

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SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM SYMPTOMS
Symptom Table INFOID:0000000004780390
SYSTEM — BASIC ENGINE CONTROL SYSTEM SYMPTOM
Reference
pageHARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2 EC-435Fuel pressure regulator system 3 3 4 4 4 4 4 4 4 4
EC-498Fuel injector circuit 1 1 2 3 2 2 2 2
EC-431Evaporative emission system 3 3 4 4 4 4 4 4 4 4
EC-74Air Positive crankcase ventilation sys-
tem 3 34 4 4 4 4 4 4 4 1
EC-456Incorrect idle speed adjustment 1 1 1 1 1
EC-30Electric throttle control actuator 1 1 2 3 3 2 2 2 2 2 2
EC-388 EC-397
Ignition Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1
EC-30Ignition circuit 1 1 2 2 2 2 2 2
EC-441Main power supply and ground circuit 2 2 3 3 3 3 3 2 3
EC-121Mass air flow sensor circuit
1
1 2 2
2 2 2 2 EC-148 EC-148
Engine coolant temperature sensor circuit
33 3
EC-167 EC-175
Air fuel ratio (A/F) sensor 1 circuit
EC-182 EC-188
EC-193
EC-198
EC-417
Throttle position sensor circuit
2 2EC-171 EC-249
EC-372
EC-374
EC-408
Accelerator pedal position sensor circuit 3 2 1
EC-399 EC-403
EC-412
Knock sensor circuit 2 3
EC-259