Nissan Terrano model r20 series 2004. Instruction — part 224
q
A
CHECK INPUT SIGNAL OF A/T FLUID
TEMPERATURE SENSOR.
1. Start engine.
2. Select “ECU INPUT SIGNALS” in
Data Monitor.
3. Read out the value of “FLUID
TEMP SE”.
Voltage:
Cold [20°C (68°F)]
→
Hot [80°C (176°F)]:
Approximately
1.5V
→
0.5V
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM ter-
minal
q
47
and ground while warm-
ing up A/T.
Voltage:
Cold [20°C (68°F)]
→
Hot [80°C (176°F)]:
Approximately
1.5V
→
0.5V
OK
E
NG
Check the following item:
I
Harness for short or
open between TCM and
terminal cord assembly
(Main harness)
Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-78.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
COMPONENT INSPECTION
A/T fluid temperature sensor
I
For removal, refer to AT-118.
I
Check resistance between terminals
q
6
and
q
7
while chang-
ing temperature as shown at left.
Temperature °C (°F)
Resistance
20 (68)
Approximately 2.5 k
Ω
80 (176)
Approximately 0.3 k
Ω
YAT419
YAT319
H
H
H
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
A/T Fluid Temperature Sensor and TCM Power
Source (Cont’d)
AT-80
Wiring Diagram — AT — ENGSS
YAT271
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG
AT-81
Engine Speed Signal
DESCRIPTION
The engine speed signal is sent from the ECM to the TCM.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code
Malfunction is detected when ...
Check items
(Possible cause)
:
ENGINE SPEED SIG
TCM does not receive the proper volt-
age signal from ECM.
I
Harness or connectors
(The sensor circuit is open or
shorted.)
:
9th 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 “SELF-DIAG RESULTS” mode with CONSULT-II.
3)
Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than
10 km/h (6 MPH), throttle opening greater than 1/8 of the
full throttle position and driving for more than 10 sec-
onds.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1)
Start engine.
2)
Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than
10 km/h (6 MPH), throttle opening greater than 1/8 of the
full throttle position and driving for more than 10 sec-
onds.
3)
Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.
SAT823H
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG
AT-82
DIAGNOSTIC PROCEDURE
Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Check ignition signal circuit condition.
OK
E
NG
Check ignition signal circuit
for engine control. Refer to
EC section [TROUBLE
DIAGNOSIS FOR “IGN
SIGNAL-PRIMARY” (DTC
21)].
CHECK INPUT SIGNAL.
1. Start engine.
2. Select “ECU INPUT SIGNALS” in
Data Monitor.
3. Read out the value of “ENGINE
SPEED”.
Check engine speed changes
according to throttle position.
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM ter-
minal
q
39
and ground.
Voltage (Idle speed):
Approximately 0.8V
Voltage (2,000 rpm):
Approximately 2.2V
OK
E
NG
Check the following items:
I
Harness for short or
open between TCM and
ECM
I
Resistor
Refer to EC section
[TROUBLE DIAGNOSIS
FOR “IGN SIGNAL-PRI-
MARY” (DTC 21)].
Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-82.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT320
H
H
H
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG
Engine Speed Signal (Cont’d)
AT-83
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