2001 NISSAN PICK-UP turn signal

On Board Diagnosis Logic
Malfunction is detected when .... Check Items (Possible cause)
+An improper voltage signal from cam position sensor (Built-
into electronic control fuel injection pump) is sent to injection
pump control unit.+Harness or connectors
(Electronic control fuel injection pump circuit is open or
shorted.)
+Electronic control fuel injection pump
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and run it for at least 2 seconds at idle speed.
(If engine does not run, turn ignition switch to ªSTARTº for at
least 2 seconds.)
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-3548.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Start engine and run it for at least 2 seconds at idle speed.
(If engine does not run, turn ignition switch to ªSTARTº for at
least 2 seconds.)
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-3548.
SEF817Y
DTC 0701 P1zCAM POS SENYD25DDTi
EC-3544

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)
+An excessively high or low voltage from the absolute pressure
sensor (built-into ECM) is sent to ECM.+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) Start engine and wait at least 2 seconds.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-3583.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Start engine and wait at least 2 seconds.
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-3583.
SEC220B
SEF817Y
DTC 0802 ECM 10YD25DDTi
EC-3581

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-3585.
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-3585.
SEC220B
SEF817Y
DTC 0804 ECM 11YD25DDTi
EC-3583

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)
29 BR/RBrake pedal position
switchIgnition switch ªONº
Brake pedal fully releasedBATTERY VOLTAGE
(11 - 14V)
Ignition switch ªONº
Brake pedal depressedApproximately 0V
On Board Diagnosis Logic
Malfunction is detected when ... Check Items (Possible Cause)
+The relation between stop lamp switch signal and brake pedal
position switch signal is not in normal range during the speci-
fied brake pedal position.+Harness or connectors
(The stop lamp switch circuit or brake pedal position switch
circuit is open or shorted.)
+Stop lamp switch
+Brake pedal position 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-3588.
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-3588.SEF817Y
DTC 0807 ECM 14YD25DDTi
EC-3585

Diagnostic Procedure
1 CHECK STOP LAMP SWITCH FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªBRAKE SWº in ªDATA MONITORº mode with CONSULT-II.
3. Check ªBRAKE SWº signal under the following conditions.
SEC256D
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 17 and ground under the following conditions.
SEC257D
OK or NG
OKcGO TO 2.
NGcGO TO 3.
DTC 0807 ECM 14YD25DDTi
EC-3587

6 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.
SEC233D
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 8.
NGcGO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M48, F54 (RHD models)
+Harness for open or short between stop lamp switch and ECM
cRepair open circuit or short to ground or short to power in harness or connectors.
8 CHECK STOP LAMP SWITCH
Check continuity between stop lamp switch terminal 1 and 2 under the following conditions.
SEC260D
OK or NG
OKcGO TO 14.
NGcReplace stop lamp switch.
DTC 0807 ECM 14YD25DDTi
Diagnostic Procedure (Cont'd)
EC-3590

9 CHECK BRAKE PEDAL POSITION SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect brake pedal position switch harness connector.
SEC233D
3. Check harness continuity between brake pedal position switch terminal 2 and ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 11.
NGcGO TO 10.
10 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M48, F54 (RHD models)
+Harness for open or short between brake pedal position switch and ground
cRepair open circuit or short to ground or short to power in harness or connectors.
11 CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 29 and brake pedal position switch terminal 1. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 13.
NGcGO TO 12.
12 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F55, M47 (RHD models)
+Harness for open or short between brake pedal position switch and ECM
cRepair open circuit or short to ground or short to power in harness or connectors.
DTC 0807 ECM 14YD25DDTi
Diagnostic Procedure (Cont'd)
EC-3591

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 G ECM relay (Self-shutoff)Ignition switch ªONº
Ignition switch ªOFFº
For a few seconds after turning ignition switch
ªOFFºApproximately 0.9V
Ignition switch ªOFFº
A few seconds passed after turning ignition
switch ªOFFºBATTERY VOLTAGE
(11 - 14V)
38 W/R Ignition switchIgnition switch ªOFFº
0V
Ignition switch ªONº
BATTERY VOLTAGE
(11 - 14V)
56
61R
RPower 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-3597.
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-3597.SEF817Y
DTC 0902 ECM RLYYD25DDTi
EC-3593