Nissan Terrano r20e. Manual — part 19
DIAGNOSTIC PROCEDURE
CHECK GROUND CIRCUIT.
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly
connector in engine compartment.
3. Check resistance between terminal
q
6
and ground.
Resistance: 10 - 20
Ω
OK
E
NG
1. Remove oil pan. Refer
to AT-123.
2. Check the following
items:
I
Torque converter clutch
solenoid valve
Refer to “COMPONENT
INSPECTION” on next
page.
I
Harness of terminal cord
assembly for short or
open
CHECK POWER SOURCE CIRCUIT.
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal
q
6
and TCM harness connector terminal
q
3
.
Resistance:
Approximately 0
Ω
If OK, check harness for short to
ground and short to power.
4. Reinstall any part removed.
OK
E
NG
Repair open circuit or short
to ground or short to
power in harness or con-
nector.
Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-72.
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
YAT312
YAT313
H
H
H
TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V
Torque Converter Clutch Solenoid Valve
(Cont’d)
AT-73
COMPONENT INSPECTION
Torque converter clutch solenoid valve
I
For removal, refer to AT-139.
Resistance check
I
Check resistance between terminal
q
6
and ground.
Solenoid valve
Terminal No.
Resistance
(Approx.)
Torque converter
clutch solenoid
valve
q
6
Ground
10 - 20
Ω
Operation check
I
Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal
q
6
and ground.
YAT314
YAT315
TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V
Torque Converter Clutch Solenoid Valve
(Cont’d)
AT-74
Wiring Diagram — AT — BA/FTS
YAT283
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
AT-75
A/T Fluid Temperature Sensor and TCM Power
Source
DESCRIPTION
The A/T fluid temperature sensor detects the A/T fluid temperature
and sends a signal to the TCM.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code
Malfunction is detected when ...
Check items
(Possible cause)
:
BATT/FLUID TEMP SEN
TCM receives an excessively low or
high voltage from the sensor.
I
Harness or connectors
(The sensor circuit is open or
shorted.)
I
A/T fluid temperature sensor
:
8th judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item
Condition
Specification
A/T fluid temperature sensor
Cold [20°C (68°F)]
"
Hot [80°C (176°F)]
Approximately
1.5V
"
Approximately
0.5V
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 open position, engine speed higher than 450 rpm
and driving for more than 10 minutes.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 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 open position, engine speed higher than 450 rpm
and driving for more than 10 minutes.
3)
Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.
SAT342HA
SAT821H
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
AT-76
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