2004 NISSAN TERRANO turn signal

On Board Diagnosis Logic
DTCMalfunction is detected when .... Check Items (Possible Cause)
P1620
0902 I
An irregular voltage signal from the ECM relay is sent
to ECM. I
Harness or connectors
(ECM relay circuit is open or shorted.)
I ECM relay
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Turn ignition switch ªOFFº, wait at least 20 seconds and then
turn ªONº.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº.
2) Turn ignition switch ªOFFº, wait at least 20 seconds and thenturn ªONº.
3) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
SEF817Y
DTC P1620 ECM RLYTD27Ti
EC-469
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Diagnostic Procedure
INSPECTION START
CHECK ECM POWER SUPPLY CIRCUIT.
1. Turn ignition switch ªOFFº.
2. Disconnect ECM relay.
3. Check voltage between ECM terminals q
1,q3and ground with CONSULT-II or
tester.
Voltage: Battery voltage
OK
ENG Check the following.
I20A fuse
I Harness for open and
short between ECM
relay and battery
If NG, repair open circuit or
short to ground or short to
power in harness or con-
nectors.
CHECK ECM INPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals
107,108,109and ECM
relay terminal q
5. Refer to Wiring Dia-
gram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK
ENG Check the following.
IHarness connectors
M787,F66(LHD mod-
els)
I Harness for open or
short between ECM
relay and ECM
If NG, repair harness or
connectors.
CHECK ECM OUTPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT.
1. Check harness continuity between ECM terminal
325and ECM relay terminal
q
2. Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK
ENG Check the following.
IHarness connectors
M787,F66(LHD mod-
els)
I Harness for open or
short between ECM
relay and ECM
If NG, repair harness or
connectors.
CHECK ECM RELAY
1. Apply 12V direct current between ECM relay terminals q
1andq2.
2. Check continuity between ECM relay terminals q
3andq5.
12V ( q
1-q2) applied: Continuity
shouldexist
No voltage applied: No continuity
OK
ENG Replace ECM relay.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector.
INSPECTION END
YEC283A
MEC945D
NEF350
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DTC P1620 ECM RLYTD27Ti
EC-471
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Diagnostic Procedure
INSPECTION START
CHECK OVERALL FUNCTION.
1. Turn ignition switch to ªONº posi-tion.
2. Check ªSTART SIGNALº in ªDATA MONITORº mode with CONSULT-
II.
------------------------------------------------------------------------------------------------------------------------------------- -OR--------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªSTARTº
position.
2. Check voltage between ECM con- nector terminal
422and engine
ground.
Voltage: Ignition switch ªSTARTº:Battery voltage
Except above: Approximately 0V
NG
EOK INSPECTION END
Check if 40A fusible link is OK.
OKENGReplace 40A fusible link.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector, ignition switch connector.
3. Check harness continuity between ECM connector terminal
422and ignition
switch connector terminal q
5. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
ENG Check the following:
I Harness connectors
M787,F66(LHD mod-
els)
I Condition and operations
of ignition switch
I Harness for open or
short-circuit between
ECM and ignition switch
If NG, repair ignition
switch, harness or con-
nectors.
Disconnect and reconnect harness connec-
tors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness con-
nector. Reconnect ECM harness connector
and retest.
INSPECTION END
IGN ªONº OFF
IGN ªSTARTº ON
PBIB0763E
MEC966D
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START SIGNALTD27Ti
EC-473
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Self-diagnosis
After performing this procedure, place check marks for results on
the ªDIAGNOSTIC WORKSHEETº, AT-24. Reference pages are
provided following the items.
SELF-DIAGNOSTIC PROCEDURE (With CONSULT-II)
1. Turn on CONSULT-II and touch ªA/Tº.If A/T is not displayed, check TCM power supply and ground
circuit. Refer to AT-46. If result is NG, refer to EL section
(ªPOWER SUPPLY ROUTINGº).
2. Touch ªSELF-DIAG RESULTSº. Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs REAL-TIME SELF-DIAGNOSIS.
Also, any malfunction detected while in this mode will be dis-
played at real time.
Item Display DescriptionRemarks
No failure ****NO FAILURE
****I
No failure has been detected.
Initial start *INITIAL START
*I
This is NOT a malfunction message.
Whenever shutting off a power supply to the
TCM, this message appears on the screen.
[]
Vehicle speed
sensor×A/T
(Revolution sensor) VHCL SPEED SEN×A/T I
No signal input from vehicle speed sensor×A/T (revolution
sensor) during traveling due to disconnection, or input of
abnormal signal.
Vehicle speed
sensor×MTR (Meter) VHCL SPEED SEN×MTR I
No signal input from vehicle speed sensor×MTR during
traveling due to disconnection, or input of abnormal signal.
Throttle (accelerator)
position sensor THROTTLE POSI SEN I
Throttle (accelerator) position sensor signal voltage is
abnormally high.
I Throttle (accelerator) position sensor signal voltage is
abnormally low with closed throttle position switch ªOFFº
or wide open throttle position switch ªONº.
Shift solenoid valve A SHIFT SOLENOID/V A I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
Shift solenoid valve B SHIFT SOLENOID/V B I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
Overrun clutch
solenoid valve OVERRUN CLUTCH S/V I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
T/C clutch solenoid
valve T/C CLUTCH SOL/V I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
A/T fluid temperature
sensor/TCM power
source BATT/FLUID TEMP SEN I
Supply voltage to TCM is abnormally low during traveling.
I Fluid temperature signal voltage is abnormally high
(fluid temperature is low) during traveling. To be dis-
played in case
of abnormality
and no record-
ing is made
Engine speed signal ENGINE SPEED SIG
IEngine RPM is abnormally low during traveling.
Line pressure
solenoid valve LINE PRESSURE S/V I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
TCM (ROM) CONTROL UNIT (ROM) ITCM memory (ROM) is malfunctioning.
TCM (RAM) CONTROL UNIT (RAM) ITCM memory (RAM) is malfunctioning.
SAT014K
SAT987J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-14
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DIAGNOSTIC WORKSHEET
1.lRead the Fail-safe and listen to customer complaints. AT-5
2. lA/T FLUID CHECK AT-27
l Leakage (Follow specified procedure)
l Fluid condition
l Fluid level
3. lPerform STALL TEST and LINE PRESSURE TEST. AT-27,
AT-30
l Stall test Ð Mark possible damaged components/others.
l Torque converter one-way clutch
l Reverse clutch
l Forward clutch
l Overrun clutch
l Forward one-way clutch l
Low & reverse brake
l Low one-way clutch
l Engine
l Line pressure is low
l Clutches and brakes except high
clutch and brake band are OK
l Line pressure test Ð Suspected parts:
4. lPerform all ROAD TEST and mark required procedures. AT-32
4-1. Check before engine is started. AT-33 l SELF-DIAGNOSTIC PROCEDURE Ð Mark detected items.
l Vehicle speed sensor×A/T (Revolution sensor), AT-52.
l Vehicle speed sensor×MTR, AT-56.
l Throttle (accelerator) position sensor, AT-62.
l Shift solenoid valve A, AT-65.
l Shift solenoid valve B, AT-68.
l Overrun clutch solenoid valve, AT-71.
l Torque converter clutch solenoid valve, AT-93.
l A/T fluid temperature sensor and TCM power source, AT-78.
l Engine speed signal, AT-82.
l Line pressure solenoid valve, AT-86.
l Park/neutral position, overdrive control, A/T check and throttle
(accelerator) position switches, AT-93.
l Battery
l Others
4-2. Check at idle AT-35 l 1. SPORT Indicator Lamp Does Not Come On, AT-97.
l 2. SPORT or SNOW Indicator Lamp Does Not Come On, AT-100.
l 3. O/D OFF Indicator Lamp Does Not Come On, AT-100.
l 4. SPORT Indicator Lamp Does Not Come On, AT-101.
l 5. Engine Cannot Be Started In ªPº And ªNº Position, AT-102.
l 6. In ªPº Position, Vehicle Moves Forward Or Backward When Pushed,
AT-102.
l 7. In ªNº Position, Vehicle Moves, AT-103.
l 8. Large Shock. ªNº ,ªRº Position, AT-104.
l 9. Vehicle Does Not Creep Backward In ªRº Position, AT-105.
l 10. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position, AT-106.
4-3. Cruise test AT-36,
AT-39
Part-1
l 11. Vehicle Cannot Be Started From D
1, AT-107.
l 12. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2, AT-108.
l 13. A/T Does Not Shift: D
2,D3, AT-109.
l 14. A/T Does Not Shift: D
3,D4, AT-110.
l 15. A/T Does Not Perform Lock-up, AT-111.
l 16. A/T Does Not Hold Lock-up Condition, AT-112.
l 17. Lock-up Is Not Released, AT-112.
l 18. Engine Speed Does Not Return To Idle (Light Braking D
4,D3), AT-113.
TROUBLE DIAGNOSIS Ð Introduction
Diagnostic Worksheet (Cont'd)
AT-24
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4. Part-2l19. Vehicle Does Not Start From D
1, AT-114.
l 12. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2, AT-108.
l 13. A/T Does Not Shift: D
2,D3, AT-109.
l 14. A/T Does Not Shift: D
3,D4, AT-110. AT-41
Part-3
l 20. A/T Does Not Shift: D
2,D1When Depressing Accelerator Pedal, AT-5.
l 21. A/T Does Not Shift: D
4,D3When Overdrive Control Switch ªONº ,
ªOFFº, AT-116.
l 18. Engine Speed Does Not Return To Idle (Engine Brake In D
3), AT-113.
l 22. A/T Does Not Shift: D
3,22, When Selector Lever ªDº ,ª2º Position,
AT-116.
l 18. Engine Speed Does Not Return To Idle (Engine Brake In 2
2), AT-113.
l 23. A/T Does Not Shift: 2
2,11, When Selector Lever ª2º ,ª1º Position,
AT-5.
l 24. Vehicle Does Not Decelerate By Engine Brake, AT-117.
l SELF-DIAGNOSTIC PROCEDURE Ð Mark detected items. AT-42
l Vehicle speed sensor×A/T (Revolution sensor), AT-52.
l Vehicle speed sensor×MTR, AT-56.
l Throttle (accelerator) position sensor, AT-62.
l Shift solenoid valve A, AT-65.
l Shift solenoid valve B, AT-68.
l Overrun clutch solenoid valve, AT-71.
l Torque converter clutch solenoid valve, AT-71.
l A/T fluid temperature sensor and TCM power source, AT-78.
l Engine speed signal, AT-82.
l Line pressure solenoid valve, AT-86.
l Park/neutral position, overdrive control, A/T check and throttle
(accelerator) position switches, AT-93.
l Battery
l Others
5. lFor self-diagnosis NG items, inspect each component. Repair or replace the
damaged parts. AT-14
6. lPerform all ROAD TEST and re-mark required procedures. AT-32
7. lPerform the Diagnostic Procedures for all remaining items marked NG. Repair or
replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also
shows some other possible symptoms and the component inspection orders.) AT-46
AT-43
8. lErase self-diagnosis code from TCM memories. AT-19
TROUBLE DIAGNOSIS Ð Introduction
Diagnostic Worksheet (Cont'd)
AT-25
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DIAGNOSTIC PROCEDURE
Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Refer to EC section [ªMalfunction Indicator
Lamp (MIL)º, ªON BOARD DIAGNOSTIC
SYSTEM DESCRIPTIONº].
OK
ENGCheck throttle (accelerator)
position sensor circuit for
engine control. Refer to
EC section [ªTROUBLE
DIAGNOSIS FOR ªTHRTL
(ACCEL) POSI SENº].
CHECK INPUT SIGNAL.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in Data Monitor.
3. Read out the value of ªTHRTL POS SENº.
Voltage:Fully-closed throttle:Approximately 0.5V
Fully-open throttle: Approximately 4V
---------------------------------------------------------------------------------------------------------------------- -OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion. (Do not start engine.)
2. Check voltage between TCM ter- minals q
32andq42while accelera-
tor pedal is depressed slowly.
Voltage: Fully-closed throttle valve:Approximately 0.4V
Fully-open throttle valve: Approximately 4V
(Voltage rises gradually in
response to throttle position)
OK
ENG Check harness for short or
open between ECM and
TCM regarding throttle
(accelerator) position sen-
sor circuit. (Main harness)
CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH.
Refer to ªCHECK THROTTLE (ACCEL-
ERATOR) POSITION SWITCHº, AT-93.
OK
ENGRepair or replace dam-
aged parts.
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-62.
OK
ENG1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT415
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TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Throttle (Accelerator) Position Sensor (Cont'd)
AT-63
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Shift Solenoid Valve A
DESCRIPTION
Shift solenoid valves A and B are turned ªONº or ªOFFº by the TCM
in response to signals sent from the park/neutral position switch,
vehicle speed and throttle position sensors. Gears will then be
shifted to the optimum position.
Gear position1234
Shift solenoid valve A ON OFF OFF ON
Shift solenoid valve B ON ON OFF OFF
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ... Check items
(Possible cause)
: SHIFT SOLENOID/V A TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.I
Harness or connectors
(The solenoid circuit is open or
shorted.)
I Shift solenoid valve A
: 4th judgement flicker
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
1) Start engine.
2) Select ªSELF-DIAG RESULTSº mode with CONSULT-II.
3) Drive vehicle in D
1, D2position.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -OR------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle in D
1,D2position.
3) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.
SAT341H
YAT343
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A
AT-65
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