2008 NISSAN TEANA power steering

EC-244
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0643 SENSOR POWER SUPPLY
NO >> GO TO 3.
3.CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair short to ground or short to power in harness or connectors.
4.CHECK COMPONENTS
Check the following.
 Camshaft position sensor (PHASE) (Refer to EC-224, "
Component Inspection".)
 Battery current sensor (Refer to EC-259, "
Component Inspection".)
 Power steering pressure sensor (Refer to EC-237, "
Component Inspection".)
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning component.
5.CHECK TP SENSOR
Refer to EC-162, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 6.
6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Go to EC-162, "
Special Repair Requirement".
>> INSPECTION END
7.CHECK APP SENSOR
Refer to EC-306, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
8.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Go to EC-306, "
Special Repair Requirement".
>> INSPECTION END
9.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
>> INSPECTION END
ECM Sensor
Connector Terminal Name Connector Terminal
F847 TP sensor F29 1
51 Battery current sensor F76 1
55 PSP sensor F62 3
59 CMP sensor (PHASE) (bank 1) F26 1
63 CMP sensor (PHASE) (bank 2) F69 1
E16 83 APP sensor E110 4

P1564 ASCD STEERING SWITCH
EC-271
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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3. Check each item indication under the following conditions.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 3.
3.CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect combination switch harness connector.
4. Check the continuity between combination switch and ECM harness connector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors M11, E105
 Combination switch (spiral cable)
 Harness for open and short between ECM and combination switch
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between combination switch and ECM harness connector.
Monitor item Condition Indication
MAIN SW MAIN switchPressed ON
Released OFF
CANCEL SW CANCEL switchPressed ON
Released OFF
RESUME/ACC SWRESUME/ACCEL-
ERATE switchPressed ON
Released OFF
SET SW SET/COAST switchPressed ON
Released OFF
ECM
Condition Voltage (V)
Con-
nector+–
Te r m i n a l Te r m i n a l
E1685
(ASCD steering switch
signal)92
(ASCD steering switch
ground)MAIN switch: Pressed Approx. 0
CANCEL switch: Pressed Approx. 1
SET/COAST switch: Pressed Approx. 2
RESUME/ACCELERATE switch: Pressed Approx. 3
All ASCD steering switches: Released Approx. 4
Combination switch ECM
Continuity
Connector Terminal Connector Terminal
M33 16 E16 92 Existed

EC-272
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1564 ASCD STEERING SWITCH
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors M11, E105
 Combination switch (spiral cable)
 Harness for open and short between ECM and combination switch
>> Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK ASCD STEERING SWITCH
Refer to EC-272, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Replace ASCD steering switch.
8.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
>>INSPECTION END
Component InspectionINFOID:0000000003856752
1.CHECK ASCD STEERING SWITCH
1. Turn ignition switch OFF.
2. Disconnect combination switch (spiral cable) harness connector.
3. Check resistance between combination switch harness connector terminals as per the following.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace ASCD steering switch
Combination switch ECM
Continuity
Connector Terminal Connector Terminal
M33 13 E16 85 Existed
Combination switch
Condition Resistance [Ω]
Connector Terminals
M33 13 and 16MAIN switch: Pressed Approx. 0
CANCEL switch: Pressed Approx. 250
SET/COAST switch: Pressed Approx. 660
RESUME/ACCELERATE switch: Pressed Approx. 1,480
All ASCD steering switches: Released Approx. 4,000

ECM
EC-365
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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P O35
(B)—Sensor ground
(Heated oxygen sensor 2)—— —
36
(B)—Sensor ground
(Throttle position sensor)—— —
37
(W)36
(B)Throttle position sensor 1 Input[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully re-
leasedMore than 0.36 V
[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully de-
pressedLess than 4.75 V
38
(R)36
(B)Throttle position sensor 2 Input[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully re-
leasedLess than 4.75 V
[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully de-
pressedMore than 0.36 V
39
(R)40
(G)Refrigerant pressure sensor Input[Engine is running]
 Warm-up condition
 Both A/C switch and blower
fan motor switch: ON (Com-
pressor operates)1.0 - 4.0 V
40
(G)—Sensor ground
(Refrigerant pressure sensor)—— —
41
(O/B)48
(B/P)Power steering pressure sen-
sorInput[Engine is running]
 Steering wheel: Being turned0.5 - 4.5 V
[Engine is running]
 Steering wheel: Not being
turned0.4 - 0.8 V
42
(BR)44
(G/B)Battery current sensor Input[Engine is running]
 Battery: Fully charged*
2
 Idle speed2.6 - 3.5 V
44
(G/B)—Sensor ground
(Battery current sensor)—— —
45
(P)49
(L)A/F sensor 1 (Bank 1) Input [Ignition switch: ON] 2.2 V
46
(Y)52
(B/R)Engine coolant temperature
sensorInput [Engine is running]0 - 4.8 V
Output voltage varies with engine
coolant temperature.
47
(G)36
(B)Sensor power supply
(Throttle position sensor)— [Ignition switch: ON] 5 V
48
(B/P)—Sensor ground
(Power steering pressure
sensor)—— —
49
(L)11 2
(B)A/F sensor 1 (Bank 1) Input[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm1.8 V
Output voltage varies with air fuel
ratio. Terminal No. Description
ConditionVa l u e
(Approx.)
+-– Signal nameInput/
Output

EC-366
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
50
(L/Y)56
(G/B)Intake air temperature sensor Input [Engine is running]0 - 4.8 V
Output voltage varies with intake
air temperature.
51
(R/Y)44
(G/B)Sensor power supply
(Battery current sensor)— [Ignition switch: ON] 5 V
52
(B/R)—Sensor ground
(Engine coolant temperature
sensor/Engine oil tempera-
ture sensor)—— —
53
(V)57
(LG)A/F sensor 1 (Bank 2) Input [Ignition switch: ON] 2.2 V
54
(G)52
(B/R)Engine oil temperature sensor Input [Engine is running]0 - 4.8 V
Output voltage varies with engine
oil temperature.
55
(SB)48
(Y)Sensor power supply
(Power steering pressure
sensor)— [Ignition switch: ON] 5 V
56
(G/B)—Sensor ground
(Mass air flow sensor/Intake
air temperature sensor)—— —
57
(LG)11 2
(B)A/F sensor 1 (Bank 2) Input[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm1.8 V
Output voltage varies with air fuel
ratio.
58
(O)56
(G/B)Mass air flow sensor Input[Engine is running]
 Warm-up condition
 Idle speed0.9 - 1.2 V
[Engine is running]
 Warm-up condition
 Engine speed: 2,500 rpm1.6 - 1.9 V
59
(G/W)64
(B/R)Sensor power supply
[Camshaft position sensor
(PHASE) (Bank 1)]— [Ignition switch: ON] 5 V
60
(Y/B)—Sensor ground
[Crankshaft position sensor
(POS)]—— —
61
(B)67
(GR)Knock sensor (Bank 1) Input[Engine is running]
 Idle speed2.5 V*
1
62
(W)67
(GR)Knock sensor (Bank 2) Input[Engine is running]
 Idle speed2.5 V*1
63
(R/W)68
(Y/G)Sensor power supply
[Camshaft position sensor
(PHASE) (Bank 2)]— [Ignition switch: ON] 5 V
64
(B/R)—Sensor ground
[Camshaft position sensor
(PHASE) (Bank 1)]—— — Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output

ECM
EC-369
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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85
(Y)92
(BR)ASCD steering switch Input[Ignition switch: ON]
 ASCD steering switch: OFF4 V
[Ignition switch: ON]
 MAIN switch: Pressed0 V
[Ignition switch: ON]
 CANCEL switch: Pressed1 V
[Ignition switch: ON]
 RESUME/ACCELERATE
switch: Pressed3 V
[Ignition switch: ON]
 SET/COAST switch: Pressed2 V
87
(GR)100
(G)Sensor power supply
(Accelerator pedal position
sensor 2)— [Ignition switch: ON] 5 V
88
(O)— Data link connectorInput/
Output——
92
(BR)—Sensor ground
(ASCD steering switch)—— —
93
(BR)11 2
(B)Ignition switch Input[Ignition switch: OFF] 0 V
[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14 V)
94
(GR)11 2
(B)Engine speed output signal Output[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle1 V
[Engine is running]
 Engine speed: 2,000 rpm1 V
97
(P)— CAN communication lineInput/
Output——
98
(L)— CAN communication lineInput/
Output——
100
(G)—Sensor ground
(Accelerator pedal position
sensor 2)—— —
102
(R)11 2
(B)PNP signal Input[Ignition switch: ON]
 Selector lever: P or NBATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON]
 Selector lever: Except above0 V
105
(V)11 2
(B)Power supply for ECM Input [Ignition switch: ON]BATTERY VOLTAGE
(11 - 14 V)
Terminal No. Description
ConditionVa l u e
(Approx.)
+-– Signal nameInput/
Output
JMBIA0076GB
JMBIA0077GB

ECM
EC-389
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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DTC IndexINFOID:0000000003856872
×:Applicable —: Not applicable
2  P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater
 P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
 P0075 P0081 Intake valve timing control solenoid valve
 P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1
 P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2
 P0444 EVAP canister purge volume control solenoid valve
 P0550 Power steering pressure sensor
 P0603 ECM power supply
 P0710 P0715 P0720 P0740 P0744 P0745 P0746 P0776 P0778 P0840 P0845 P1740 CVT related sensors, solenoid valves
and switches
 P1217 Engine over temperature (OVERHEAT)
 P1720 Vehicle speed sensor
 P1777 P1778 CVT step motor
 P1800 P1801 VIAS control solenoid valve
 P1805 Brake switch
 P2100 P2103 Throttle control motor relay
 P2101 Electric throttle control function
 P2118 Throttle control motor
3  P0011 P0021 Intake valve timing control
 P0171 P0172 P0174 P0175 Fuel injection system function
 P0300 - P0306 Misfire
 P0420 P0430 Three way catalyst function
 P1212 TCS communication line
 P1564 ASCD steering switch
 P1572 ASCD brake switch
 P1574 ASCD vehicle speed sensor
 P1715 Primary speed sensor
 P2119 Electric throttle control actuator Priority Detected items (DTC)
Items
(CONSULT-III screen terms)DTC*
1
SRT code Trip MIReference
page CONSULT-III
GST*
2ECM*3
CAN COMM CIRCUIT U1000
1000*4—1×EC-135
CAN COMM CIRCUIT U1001
1001*4—2 —EC-135
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000——
Flashing*6—
INT/V TIM CONT-B1 P0011 0011 — 2 —EC-136
INT/V TIM CONT-B2 P0021 0021 — 2 —EC-136
A/F SEN1 HTR (B1) P0031 0031 — 2×EC-140
A/F SEN1 HTR (B1) P0032 0032 — 2×EC-140
HO2S2 HTR (B1) P0037 0037 — 2×EC-143
HO2S2 HTR (B1) P0038 0038 — 2×EC-143
A/F SEN1 HTR (B2) P0051 0051 — 2×EC-140
A/F SEN1 HTR (B2) P0052 0052 — 2×EC-140
HO2S2 HTR (B2) P0057 0057 — 2×EC-143
HO2S2 HTR (B2) P0058 0058 — 2×EC-143
INT/V TIM V/CIR-B1 P0075 0075 — 2×EC-146
INT/V TIM V/CIR-B2 P0081 0081 — 2×EC-146
MAF SEN/CIRCUIT-B1 P0102 0102 — 1×EC-149
MAF SEN/CIRCUIT-B1 P0103 0103 — 1×EC-149

ENGINE CONTROL SYSTEM SYMPTOMS
EC-401
< SYMPTOM DIAGNOSIS >[VQ25DE, VQ35DE]
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1 - 6: The numbers refer to the order of inspection.
(continued on the next figure)
SYSTEM — ENGINE MECHANICAL & OTHER
Crankshaft position sensor (POS) circuit 2 2EC-218
Camshaft position sensor (PHASE) circuit 3 2EC-222
Vehicle speed signal circuit 2 3 3 3EC-234
Power steering pressure sensor circuit 2 3 3EC-236
ECM 22333333333EC-238,
EC-240
Intake valve timing control solenoid valve cir-
cuit32 13223 3EC-146
PNP signal circuit 3 3 3 3 3EC-245
VIAS control solenoid valve 1 circuit 1EC-285
VIAS control solenoid valve 2 circuit 1EC-288
Refrigerant pressure sensor circuit 2 3 3 4EC-348
Electrical load signal circuit 3EC-329
Air conditioner circuit 223333333 3 2HAC-159
ABS actuator and electric unit (control unit) 4BRC-80
SYMPTOM
Reference
page
HARD/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