2003 NISSAN ALMERA N16 Engine control circuit

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-309
[EXC.F/EURO-OBD]
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1. O/D OFF Indicator Lamp Does Not Come OnECS007R0
SYMPTOM:
O/D OFF indicator lamp does not come on for about 2 seconds when turning ignition switch to “ON”.
1.CHECK GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device terminals 7 and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2.CHECK LAMP CIRCUIT
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Disconnect A/T device harness connector.
3. Check voltage between A/T device terminals 8 and ground.
OK or NG
OK >> GO TO 3
NG >> Check the following items:
●Harness for short or open between ignition switch and
TCM terminals 8.
3.CHECK OVERDRINE CONTROL SWITCH
1. Disconnect A/T device harness connector.
2. Check continuity between A/T device terminals 7 and 8.
OK or NG
OK >>INSPECTION END.
NG >> Repair or replace A/T device.
2. Engine Cannot Be Started In “P” and “N” PositionECS007R1
SYMPTOM:
●Engine cannot be started with selector lever in “P” or “N” position.
●Engine can be started with selector lever in “D”, “2”, “1” or “R” position. Continuity should exist.
MCIB0007E
Voltage: Battery voltage
MCIB0008E
OVERDRIVE CONTROL
SW “ON”:Continuity should not exist.
OVERDRIVE CONTROL
SW “OFF”:Continuity should exist.
SCIA0767E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-327
[EXC.F/EURO-OBD]
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1.CHECK DIAGNOSTIC RESULTS
Does self-diagnosis show damage to engine speed signal circuit
after cruise test?
Ye s o r N o
Yes >> Check engine speed signal circuit. Refer to AT- 3 8 3 ,
"ENGINE SPEED SIGNAL" .
No >> GO TO 2
2.CHECK A/T FLUID CONDITION
1. Remove oil pan, refer to AT- 4 0 6 , "
REMOVAL" .
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 3
NG >> GO TO 5
3.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 0 6 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Torque converter clutch control valve
–Pilot valve
–Pilot filter
OK or NG
OK >> GO TO 4
NG >> Repair or replace damaged parts.
4.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
SCIA0773E
SAT171B

AT-328
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
5. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 0 6 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Torque converter clutch control valve
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check torque converter and oil pump assembly.
OK or NG
OK >> GO TO 4
NG >> Repair or replace damaged parts.
14. Lock-up Is Not ReleasedECS007RD
SYMPTOM:
Lock-up is not released when accelerator pedal is released.
1. CHECK THROTTLE POSITION SENSOR* CIRCUIT
*: This sensor means accelerator pedal position (APP) sensor.
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage throttle position sensor circuit?
Without CONSULT-II
Does self-diagnosis show damage to throttle position sensor circuit?
Ye s o r N o
Yes >> Check throttle position sensor circuit. Refer to AT- 3 3 3 ,
"21. TCM Self-diagnosis Does Not Activate (PNP &
Overdrive Control Switches, and Throttle Position Sen-
sor Circuit Checks)" .
No >> GO TO 2
2. CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
15. Engine Speed Does Not Return To Idle (Light Braking D4→ D3 )ECS007RE
SYMPTOM:
●Engine speed does not smoothly return to idle when A/T shifts from D4 to D3 .
●Vehicle does not decelerate by engine brake when turning overdrive control switch OFF.
●Vehicle does not decelerate by engine brake when shifting A/T from “D” to “2” position.
SCIA0706E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-333
[EXC.F/EURO-OBD]
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20. Vehicle Does Not Decelerate By Engine BrakeECS007RJ
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2 (12 ) to 11 .
1.CHECK SYMPTOM
Is 6. Vehicle Does Not Creep Backward In “R” Position OK?
Ye s o r N o
Yes >> Go to AT- 3 2 8 , "15. Engine Speed Does Not Return To Idle (Light Braking D4→ D3 )" .
No >> Go to AT- 3 1 3 , "
6. Vehicle Does Not Creep Backward In “R” Position" .
21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches,
and Throttle Position Sensor Circuit Checks)
ECS007RK
SYMPTOM:
O/D OFF indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit is
good.
DESCRIPTION
●PNP switch
The PNP switch assembly includes a transmission position switch. The transmission position switch
detects the selector lever position and sends a signal to the TCM.
●Overdrive control switch
Detects the overdrive control switch position (ON or OFF) and sends a signal to the TCM.
SCIA0752E
SCIA0776E
MCIB9006E

AT-334
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
●Throttle position sensor *
*: This sensor means accelerator pedal position (APP) sensor.
Electric throttle control actuator consists of throttle control motor, acceleration pedal position sensor, throt-
tle position sensor, etc. The actuator sends a signal to the TCM.
DIAGNOSTIC PROCEDURE
1. CHECK PNP SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “P/N”, “R”, “D”, “2” and “1” position switches moving selector lever to each position.
Check that the signal of the selector lever position is indicated
properly.
OK or NG
OK >> GO TO 3
NG >> Check the following items:
●PNP switch (Refer to AT- 3 3 8 , "COMPONENT
INSPECTION" .)
●Harness for short or open between ignition switch and
PNP switch
●Harness for short or open between PNP switch and
TCM
●Diode (P, N positions)
SAT701J

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-335
[EXC.F/EURO-OBD]
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2.CHECK PNP SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position. (Do not start engine.)
2. Check voltage between TCM terminals 26, 27, 34, 35, 36 and
ground while moving selector lever through each position.
OK or NG
OK >> GO TO 4
NG >> Check the following items:
●PNP switch (Refer to AT- 3 3 8 , "COMPONENT
INSPECTION" .)
●Harness for short or open between ignition switch and
PNP switch
●Harness for short or open between PNP switch and TCM
●Diode (P, N positions)
3.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “OVERDRIVE SWITCH”.
Check the signal of the overdrive control switch is indicated properly.
(Overdrive control switch “ON” displayed on CONSULT-II means
overdrive “OFF”.)
OK or NG
OK >> GO TO 5
NG >> Check the following items:
●Overdrive control switch (Refer to AT- 3 3 8 , "COMPO-
NENT INSPECTION" .)
●Harness for short or open between TCM and over-
drive control switch
●Harness of ground circuit for overdrive control switch
for short or open Vo l t a g e :
B: Battery voltage
0: 0V
Lever
positionTerminal No.
36 35 34 27 26
P, N B 0 0 0 0
R0B000
D0 0B00
2000B0
10000B
SCIA0777E
SAT645J

AT-336
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
4. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between A/T device connector terminal 2 and ground when overdrive control switch is “ON”
and “OFF”.
OK or NG
OK >> GO TO 6
NG >> Check the following items:
●Overdrive control switch (Refer to AT-338, "COMPONENT INSPECTION" .)
●Harness for short or open between TCM and overdrive control switch
●Harness of ground circuit for overdrive control switch for short or open
Voltage:
Switch position “ON”:
Battery voltage
Switch position “OFF”:
1V or less

AT-352
[ALL]
ACCELE RATOR PEDAL POSITION (APP) SENSOR
ACCELE RATOR PEDAL POSITION (APP) SENSOR
PFP:22620
DescriptionECS007RT
Accelerator pedal position (APP) sensor (Throttle position sensor)
Electric throttle control actuator consists of throttle control motor,
acceleration pedal position sensor, throttle position sensor, etc. The
actuator sends a signal to the TCM.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
*:This code means Accelerator pedal position (APP) sensor in reality.
MCIB9006E
Monitor item Condition Specification
Accelerator pedal position (APP) sensor
(Throttle position sensor)Fully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
Termi-
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
32 RThrottle position
sensor
(Power source)
or When turning ignition switch “ON”. 4.5 - 5.5V
When turning ignition switch “OFF”. 0V
41 GYThrottle position
sensorWhen depressing accelerator pedal
slowly after warming up engine.
(Voltage rises gradually in response
to throttle position.)Fully-closed throttle:
0.5V
Fully-open throttle:
4V
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: THROTTLE POSI SEN*
TCM receives an excessively low or high
voltage from the sensor.
●Harness or connectors
(The sensor circuit is open or shorted.)
●Accelerator pedal position (APP) sensor
(Throttle position sensor) : 3rd judgement flicker