Nissan Terrano r20e. Manual — part 203
Wiring Diagram
YEC153A
START SIGNAL
TD27Ti
EC-449
Diagnostic Procedure
INSPECTION START
CHECK OVERALL FUNCTION.
1. Turn ignition switch to “ON” posi-
tion.
2. Check “START SIGNAL” in “DATA
MONITOR” mode with CONSULT-
II.
-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to “START”
position.
2. Check voltage between ECM con-
nector terminal
422
and engine
ground.
Voltage:
Ignition switch “START”:
Battery voltage
Except above:
Approximately 0V
NG
E
OK
INSPECTION END
Check if 40A fusible link is OK.
OK
E
NG
Replace 40A fusible link.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to “LOCK” position.
2. Disconnect ECM harness connector,
ignition switch connector.
3. Check harness continuity between ECM
connector terminal
422
and ignition
switch connector terminal
q
5
. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
E
NG
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 “ON”
OFF
IGN “START”
ON
PBIB0763E
MEC966D
H
H
H
H
H
H
START SIGNAL
TD27Ti
EC-450
Wiring Diagram
YEC162A
OIL PRESSURE SWITCH
TD27Ti
EC-451
Wiring Diagram
YEC156A
MI & DATA LINK CONNECTORS
TD27Ti
EC-452
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