NISSAN PRIMERA 1999 Electronic Repair Manual

YEC103A
TROUBLE DIAGNOSES 17CD20T
Brake Switch (Cont'd)
EC-137

INSPECTION START
(RDNT brake switch)
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Disconnect RDNT brake switch har-
ness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between RDNT brake
switch harness connector terminal
p1and body ground.
Voltage: Battery voltage
OK
ENG
Check the following:
lHarness connectors
F104,M50
(RHD models)
lHarness connectors
F2,E43
(LHD models)
lHarness for open or
short-circuit between
RDNT brake switch
harness connector ter-
minal
p1and ECM
connector terminal
416.
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Check harness continuity between
RDNT brake switch harness connec-
tor terminal
p2and body ground.
Continuity should exist.
If OK, check harness for short-
circuit.
OK
ENG
Repair harness or con-
nectors.
CHECK COMPONENT.
(RDNT brake switch)
Refer to ªCOMPONENT INSPECTIONº
on next page.
OK
Disconnect and reconnect harness
connectors in the circuit. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage
and check the connection of ECM har-
ness connector. Reconnect ECM har-
ness connector and retest.
INSPECTION END
YEC377
RDNT brake switch
harness connector
YEC378
RDNT brake switch
harness connector
H
H
H
H
H
H
TROUBLE DIAGNOSES 17CD20T
Brake Switch (Cont'd)
EC-138

COMPONENT INSPECTION
Stop lamp switch and RDNT brake switch
1. Turn ignition switch to ªLOCKº position.
2. Disconnect switch harness connectors.
3. Check continuity between terminals
p1andp2.
Continuity:
Brake pedal Stop lamp switch RDNT brake switch
ReleasedNo No
DepressedYe s Ye s
If NG, replace stop lamp switch or RDNT brake switch.
1
2
1 2
YEC379
TROUBLE DIAGNOSES 17CD20T
Brake Switch (Cont'd)
EC-139

ECM Relay
The ECM Relay shuts off the main power supply to the ECM
within 5 seconds after the ignition switch has turned to the
ªLOCKº position.
Malfunction is detected when ....Check Items
(Possible cause)
lECM relay shut-off time is too late.lHarness or connectors
(The ECM relay circuit is shorted).
lECM relay
lECM
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE
1) Turn ignition switch to the ªONº position and select
ªDATA MONITORº mode with CONSULT-II.
2) Turn ignition switch to the ªLOCKº position and wait
at least 5 seconds.
3) Turn ignition switch to the ªONº position and wait at
least 2 seconds.
DIAGNOSTIC PROCEDURE
Refer to ªTrouble Diagnosis for Power Supplyº (EC-CD-59) for
ECM relay circuit inspection.
TROUBLE DIAGNOSES 18CD20T
EC-140

MI & Data Link Connectors
Malfunction indicator (MI) circuit is monitored for open or short-
circuit. If the circuit is malfunctioning, MI can not report it but
CONSULT-II can.
Malfunction is detected when ....Check Items
(Possible cause)
lMI circuit is open or shorted.lHarness or connectors
(MI circuit is open or shorted).
lMI lamp
lECM
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE
1) Turn ignition switch to ªONº position and select ªDATA
MONITORº mode with CONSULT-II.
2) Start engine and run it for at least 2 seconds at idle
speed.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
OVERALL FUNCTION CHECK
1) Turn ignition switch to ªONº position.
2) Check that MI lits on.
TROUBLE DIAGNOSES 19CD20T
EC-141

YEC104A
TROUBLE DIAGNOSES 19CD20T
MI & Data Link Connectors (Cont'd)
EC-142

DIAGNOSTIC PROCEDURE: MODELS BEFORE VIN -
P11U0548750
INSPECTION START
(MI circuit)
CHECK MI BULB.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Disconnect combination meter har-
ness connector.
3. Apply battery voltage between com-
bination meter terminal
p5andp13.
4. Check that MI lits on.
OK
ENG
Replace MI bulb.
CHECK POWER SUPPLY.
1. Turn ignition switch to ªONº position.
2. Check voltage between combination
meter terminal
p5and body
ground.
Voltage: Battery voltage
OK
ENG
Check the following:
lHarness for open or
short-circuit between
combination meter and
ignition switch.
l10A fuse
If NG, repair or replace
harness or fuse.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Disconnect ECM harness connector.
3. Check continuity between combina-
tion meter connector terminal
p13
and ECM connector terminal215.
Continuity should exist.
If OK, check harness for short-cir-
cuit.
OK
ENG
Check the following:
lHarness connectors
M50,F104
If NG, repair harness or
connectors.
lHarness and connec-
tors for open or short-
circuit between ECM
and combination meter.
Disconnect and reconnect harness
connectors in the circuit. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage
and check the connection of ECM har-
ness connector. Reconnect ECM har-
ness connector and retest.
INSPECTION END
YEC380
Combination meter
harness connector
YEC381
Combination meter
harness connector
NEF222A
Combination meter
harness connector
H
H
H
H
H
H
TROUBLE DIAGNOSES 19CD20T
MI & Data Link Connectors (Cont'd)
EC-143

DIAGNOSTIC PROCEDURE: MODELS AFTER VIN -
P11U0548750
INSPECTION START
(MI circuit)
CHECK MI DIODE.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Disconnect combination meter har-
ness connector.
3. Apply battery voltage between com-
bination meter terminal
p1andp8.
4. Check that MI lits on.
OK
ENG
Repair or replace combi-
nation meter.
CHECK POWER SUPPLY.
1. Turn ignition switch to ªONº position.
2. Check voltage between combination
meter terminal
p1and body
ground.
Voltage: Battery voltage
OK
ENG
Check the following:
lHarness for open or
short-circuit between
combination meter and
ignition switch.
l10A fuse
If NG, repair or replace
harness or fuse.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Disconnect ECM harness connector.
3. Check continuity between combina-
tion meter connector terminal
p8
and ECM connector terminal215.
Continuity should exist.
If OK, check harness for short-cir-
cuit.
OK
ENG
Check the following:
lHarness connectors
M50,F104
If NG, repair harness or
connectors.
lHarness and connec-
tors for open or short-
circuit between ECM
and combination meter.
Disconnect and reconnect harness
connectors in the circuit. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage
and check the connection of ECM har-
ness connector. Reconnect ECM har-
ness connector and retest.
INSPECTION END
YEC121A
YEC122A
YEC123A
H
H
H
H
H
H
TROUBLE DIAGNOSES 19CD20T
MI & Data Link Connectors (Cont'd)
EC-144

Start Signal
YEC817 BATTERY
Refer to EL-POWER.
: Detectable line for DTC
: Non-detectable line for DTC
IGNITION
SWITCH
FUSE
BLOCK
(J/B)
ECM
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
OFF
ST
ACC
ON
Refer to EL-POWER.
TROUBLE DIAGNOSES 20CD20T
EC-145

DIAGNOSTIC PROCEDURE
INSPECTION START
CHECK OVERALL FUNCTION.
1. Turn ignition switch to ªONº
position.
2. Check ªSTART SIGNALº in
ªDATA MONITORº mode with
CONSULT-II.
----------------------------------------------------------------------------------------------------------------------------------------OR----------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to the
ªLOCKº position.
2. Disconnect ECM harness con-
nector.
3. Turn ignition switch to ªSTARTº
position.
4. Check voltage between ECM
connector terminal
422and
ground.
Voltage:
Ignition switch ªSTARTº Ð
Battery voltage
Except above Ð
Approximately 0V
NG
EOK
INSPECTION END
Check if 10A fuse is OK.
OK
ENG
Replace 10A fuse.
CHECK INPUT SIGNAL CIRCUIT.
1) Turn ignition switch to ªLOCKº posi-
tion.
2) Disconnect 10A fuse.
3) Check harness continuity between
ECM connector terminal
422and
fuse block.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG
Check the following:
lHarness or connec-
tors
M50,F104
lHarness for open or
short-circuit between
ECM and fuse block.
If NG, repair harness
or connectors.
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage
and check the connection of ECM har-
ness connector. Reconnect ECM harness
connector and retest.
INSPECTION END
IGN ªONºOFF
IGN ªSTARTºON
C2DMM04
NEF223A
NEF224A
Fuse
H
H
H
H
H
H
TROUBLE DIAGNOSES 20CD20T
Start Signal (Cont'd)
EC-146