Nissan Terrano r20e. Instruction — part 200
q
A
CHECK CONTROL FUNCTION.
With CONSULT-II
1. Turn ignition switch to “ON” position.
2. Turn EGRC-solenoid valve A, B and
throttle control solenoid valve to “ON”
and to “OFF” in “ACTIVE TEST” mode
with CONSULT and check operating
sound.
Without CONSULT-II
1. Check voltage between ECM connector
terminals
208
,
210
and engine
ground with tester under the following
conditions.
Voltage:
At idle:
Approximately 0.4V
Engine speed is more than 3,000
rpm:
Battery voltage
2. Check voltage between ECM connector
terminal
q
1
and engine ground with
tester under the following conditions.
Voltage:
At idle:
Approximately 0.4V
Engine speed is more than 2,400
rpm:
Battery voltage
NG
E
OK
CHECK VACUUM HOSE.
Check vacuum hose for
clogging, cracks or
improper connection.
CHECK POWER SUPPLY-I.
1. Turn ignition switch to “LOCK” position.
2. Disconnect EGRC-solenoid valve A and
B harness connector.
3. Turn ignition switch to “ON” position.
4. Check voltage between EGRC-solenoid
valve A and B terminals
q
2
and engine
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK
E
NG
Check the following:
I
20A fuse
I
Condition and operation
of ignition switch
I
Harness connectors
M787
,
F66
(LHD mod-
els)
I
Harness connectors
F100
,
M775
(RHD mod-
els)
I
ECM relay
I
Harness for open or
short-circuit between
EGRC-solenoid valve A,
B and fuse.
If NG, replace fuse or
repair ignition switch, har-
ness or connectors.
q
B
MEC953D
SEF816F
YEC247A
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
Diagnostic Procedure (Cont’d)
EC-437
q
B
CHECK POWER SUPPLY-II.
1. Turn ignition switch “OFF”.
2. Disconnect throttle control solenoid
valve harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between throttle solenoid
valve connector terminal
q
2
and engine
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK
E
NG
Check the following.
I
20A fuse
I
ECM relay
I
Harness connectors
M787
,
F66
(LHD mod-
els)
I
Harness connectors
F100
,
M77
(RHD mod-
els)
I
Harness for open or
short circuit between
throttle control solenoid
valve and ECM relay.
If NG, repair or replace
harness or connectors.
CHECK OUTPUT SIGNAL CIRCUIT-I.
1. Disconnect ECM harness connector.
2. Check harness continuity between
ECM connector terminal
208
and
EGR Control Solenoid Valve A connec-
tor terminal
q
1
; ECM connector terminal
210
and EGR Control Solenoid Valve
B connector terminal
q
1
. Refer to wiring
diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Check the following:
I
Harness connectors
F100
,
M775
(RHD mod-
els)
I
Harness for open or
short-circuit between
EGRC-solenoid valve A,
B and ECM
If NG, repair harness or
connectors.
CHECK OUTPUT SIGNAL CIRCUIT-II.
1. Disconnect ECM harness connector.
2. Check harness continuity between
ECM connector terminal
213
and
throttle control solenoid valve terminal
q
1
. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
E
NG
Check the following:
I
Harness connectors
F137
,
M853
(RHD mod-
els)
I
Harness for open or
short circuit between
throttle control solenoid
valve and ECM
If NG, repair harness or
connectors.
CHECK COMPONENTS
(EGRC-solenoid valve A and B).
(Throttle control valve)
Refer to EC-439.
OK
E
NG
Replace malfunctioning
component(s).
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage or
the connection of ECM harness connector.
Reconnect ECM harness connector and
retest.
INSPECTION END
MEC954D
H
H
H
H
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
Diagnostic Procedure (Cont’d)
EC-438
Component Inspection
EGR VALVE
Apply vacuum to EGR vacuum port with a hand vacuum pump.
EGR valve diaphragm should lift.
If NG, replace EGR valve.
THROTTLE CONTROL VALVE
Apply vacuum to throttle control valve vacuum port with a hand
vacuum pump.
Throttle control valve should close.
If NG, replace throttle control valve.
EGRC-SOLENOID VALVE A, B AND THROTTLE
CONTROL SOLENOID VALVE
Check air passage continuity.
Component
Applied voltage
Air passage continuity
between ports
q
A
and
q
B
EGRC-
solenoid
valve A
12V dc between terminals
q
1
&
q
4
. . . . . . . . . . . . . . . . . . . . . . . . . . .
No supply
YES
. . . . . . . . . . . . . . . . . . . . . . . . . . .
NO
EGRC-
solenoid
valve B
12V dc between terminals
q
2
&
q
5
. . . . . . . . . . . . . . . . . . . . . . . . . . .
No supply
YES
. . . . . . . . . . . . . . . . . . . . . . . . . . .
NO
Throttle control
solenoid
valve A
12V dc between terminals
q
3
&
q
6
. . . . . . . . . . . . . . . . . . . . . . . . . . .
No supply
YES
. . . . . . . . . . . . . . . . . . . . . . . . . . .
NO
If NG, replace EGRC-solenoid valve A, B and throttle control sole-
noid valve.
MEF137D
NEF514
NEF515
NEF517
NEF518
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
EC-439
Component Description
AIR CONDITIONER CUT CONTROL
Air conditioner is cut under the following conditions:
I
Starting engine
I
Quick acceleration from low speed
I
Undershooting of idle speed
I
High engine coolant temperature [above 107°C (225°F)]
I
Malfunctioning of engine speed sensor, accelerator position sen-
sor or vehicle speed sensor when engine speed is below 2,100
rpm.
On Board Diagnosis Logic
DTC
Malfunction is detected when .
Check Items
(Possible cause)
P1530
0805
I
Air conditioner relay signal circuit is shorted.
I
Harness or connectors
(The air conditioner relay signal circuit is shorted.)
I
Air conditioner relay
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch and air conditioner switch to “ON” position.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Wait at least 2 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch and air conditioner switch to “ON” position.
Wait at least 2 seconds.
2) Turn ignition switch to “LOCK” position, wait at least 5 seconds
and then turn to “ON” position.
3) Perform “Diagnostic Test Mode II” (Self-diagnostic results).
DTC P1530 AIR CONDITIONER RLY
TD27Ti
EC-440
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