NISSAN PATROL 2000 Electronic Repair Manual

Diagnostic Procedure
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº, EC-1187, again.
5. Is the malfunction displayed again?
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory.
3. Perform ªDTC Confirmation Procedureº, EC-1187, again.
4. Perform ªDiagnostic Test Mode II (Self-diagnostic results)º.
5. Is the DTC 0802 displayed again?
Yes or No
YescReplace ECM.
NocINSPECTION END
DTC 0802 ECM 10ZD30DDTi
EC-1188

Description
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the
engine.
On Board Diagnosis Logic
Malfunction is detected when ... Check Items (Possible Cause)
+ECM input signal processing function is malfunctioning.+ECM
(ECCS-D control module)
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 1 second.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-1190.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 1 second.
2) Turn ignition switch ªOFFº, wait at least 5 seconds and then
turn ªONº.
3) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º
with ECM.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-1190.
SEC220B
SEF817Y
DTC 0804 ECM 11ZD30DDTi
EC-1189

Diagnostic Procedure
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº, EC-1189, again.
5. Is the malfunction displayed again?
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory.
3. Perform ªDTC Confirmation Procedureº, EC-1189, again.
4. Perform ªDiagnostic Test Mode II (Self-diagnostic results)º.
5. Is the DTC 0802 displayed again?
Yes or No
YescReplace ECM.
NocINSPECTION END
DTC 0804 ECM 11ZD30DDTi
EC-1190

Description
The stop lamp switch is installed to brake pedal bracket. The
switch senses brake pedal position and sends an ON-OFF sig-
nal to the ECM. The ECM uses the signal to control the fuel
injection control system.
ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
17 G/Y Stop lamp switchIgnition switch ªONº
Brake pedal fully releasedApproximately 0V
Ignition switch ªONº
Brake pedal depressedBATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis Logic
Malfunction is detected when ... Check Items (Possible Cause)
+An irregular voltage signal from the switch is sent to ECM.+Harness or connectors
(The stop lamp switch circuit is open or shorted.)
+Stop lamp switch
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Depress and release brake pedal more than 10 times.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-1193.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº.
2) Depress and release brake pedal more than 10 times.
3) Turn ignition switch ªOFFº, wait at least 5 seconds and then
turn ªONº.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º
with ECM.
5) If DTC is detected, go to ªDiagnostic Procedureº, EC-1193.
SEF275Z
SEF817Y
DTC 0807 ECM 14ZD30DDTi
EC-1191

Wiring Diagram
TEC121M
DTC 0807 ECM 14ZD30DDTi
EC-1192

Diagnostic Procedure
1 CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch ªONº.
2. Check the stop lamp when depressing and releasing the stop lamp switch.
MTBL0443
OK or NG
OKcGO TO 4.
NGcGO TO 2.
2 CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect stop lamp switch harness connector.
SEF275Z
3. Turn ignition switch ªONº.
4. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-II or tester.
SEF435Y
OK or NG
OKcGO TO 4.
NGcGO TO 3.
DTC 0807 ECM 14ZD30DDTi
EC-1193

3 DETECT MALFUNCTIONING PART
Check the following.
+Fuse block (J/B) connector M3
+10A fuse
+Harness for open and short between stop lamp switch and fuse
cRepair open circuit or short to ground or short to power in harness or connectors.
4 CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Disconnect stop lamp switch harness connector.
SEF275Z
4. Check harness continuity between ECM terminal 17 and stop lamp switch terminal 2. Refer to Wiring Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 6.
NGcGO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M52, F7
+Harness for open or short between ECM and stop lamp switch
cRepair open circuit or short to ground or short to power in harness or connectors.
DTC 0807 ECM 14ZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1194

6 CHECK STOP LAMP SWITCH
Check continuity between stop lamp switch terminals 1 and 2 under the following conditions.
SEF276Z
OK or NG
OKcGO TO 7.
NGcReplace stop lamp switch.
7 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-1076.
cINSPECTION END
DTC 0807 ECM 14ZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1195

ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
4 B/Y ECM relay (Self-shutoff)Ignition switch ªONº
Ignition switch ªOFFº
For a few seconds after turning ignition switch
ªOFFºApproximately 0.25V
Ignition switch ªOFFº
A few seconds passed after turning ignition
switch ªOFFºBATTERY VOLTAGE
(11 - 14V)
38 B/Y Ignition switchIgnition switch ªOFFº
0V
Ignition switch ªONº
BATTERY VOLTAGE
(11 - 14V)
56
61
116W
W
WPower supply for ECM Ignition switch ªONº
BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis Logic
Malfunction is detected when .... Check Items (Possible Cause)
+An irregular voltage signal from the ECM relay is sent to
ECM.+Harness or connectors
(ECM relay circuit is open or shorted.)
+ECM relay
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Turn ignition switch ªOFFº, wait at least 20 seconds and then
turn ªONº.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-1198.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº.
2) Turn ignition switch ªOFFº, wait at least 20 seconds and then
turn ªONº.
3) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º
with ECM.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-1198.SEF817Y
DTC 0902 ECM RLYZD30DDTi
EC-1196

Wiring Diagram
TEC123M
DTC 0902 ECM RLYZD30DDTi
EC-1197