Nissan Terrano r20e. Instruction — part 150
Diagnostic Procedure
1
CHECK ELECTRONIC CONTROL FUEL INJECTION PUMP POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect electronic control fuel injection pump harness connector.
MEC025E
3. Turn ignition switch “ON”.
4. Check voltage between electronic control fuel injection pump terminal 7 and ground.
MEC977D
Voltage: Battery voltage
OK or NG
OK
E
GO TO 3.
NG
E
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors M787, F66 (LHD models)
I
Harness connectors F108, E225
I
Harness connectors E220, E231 (LHD models)
I
Harness connectors M842, F135 (RHD models)
I
Harness for open or short between electronic control fuel injection pump and ECM
I
Harness for open or short between electronic control fuel injection pump and ECM relay
E
Repair open circuit or short to ground or short to power in harness or connectors.
3
CHECK ELECTRONIC CONTROL FUEL INJECTION PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between electronic control fuel injection pump terminal 6 and ground. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
E
GO TO 5.
NG
E
GO TO 4.
DTC 1004 FUEL CUT SYSTEM1
ZD30DDTi
EC-237
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E231, E220
I
Harness for open or short between electronic control fuel injection pump and engine ground
E
Repair open circuit or short to ground or short to power in harness or connectors.
5
CHECK COMMUNICATION LINE FOR OPEN AND SHORT
1. Check continuity between the following terminals. Refer to Wiring Diagram.
MTBL0444
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK
E
GO TO 7.
NG
E
GO TO 6.
6
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E227, F106
I
Harness connectors E231, E220
I
Harness connectors F135, M842 (RHD models)
I
Harness for open or short between electronic control fuel injection pump and ECM
E
Repair open circuit or short to ground or short to power in harness or connectors.
7
CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-78.
OK or NG
OK
E
Replace electronic control fuel injection pump.
NG
E
Repair open circuit or short to ground or short to power in harness or connectors.
DTC 1004 FUEL CUT SYSTEM1
ZD30DDTi
Diagnostic Procedure (Cont’d)
EC-238
Description
SYSTEM DESCRIPTION
Sensor
Input Signal to ECM
ECM
Function
Actuator
Crankshaft position
sensor (TDC)
Engine speed
Glow
control
Glow lamp,
Glow relay
"
Glow plugs
Engine coolant tem-
perature sensor
Engine coolant tem-
perature
When engine coolant temperature is more than approximately 75°C
(167°F), the glow relay turns off, inactivating the quick-glow control
until coolant temperature drops below approximately 55°C (131°F).
When coolant temperature is lower than approximately 75°C
(167°F):
I
Ignition switch ON
After ignition switch has turned to ON, the glow relay turns ON
for a certain period of time in relation to engine coolant
temperature, allowing current to flow through glow plug.
I
Cranking
The glow relay turns ON, allowing current to flow through glow
plug.
I
Starting
After engine has started, current continues to flow through glow
plug (after-glow mode) for a certain period in relation to engine
coolant temperature.
When engine speed exceeds approximately 4,800 rpm, current
flow through glow plug is interrupted.
The glow indicator lamp turns ON for a certain period of time in
relation to engine coolant temperature at the time glow relay is
turned ON.
COMPONENT DESCRIPTION
Glow plug
I
The glow plug is provided with a ceramic heating element to
obtain a high-temperature resistance. It glows in response to a
signal sent from the ECM, allowing current to flow through the
glow plug via the glow relay.
I
This engine uses two types of glow plugs.
Type A has a blue or yellow paint mark.
Type B has no paint mark.
The location of the paint mark is shown in the figure.
WARNING:
Do not use two types of glow plugs at the same time.
SEF376Y
SEF280Z
GLOW CONTROL SYSTEM
ZD30DDTi
EC-239
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
COLOR
ITEM
CONDITION
DATA (DC Voltage)
16
G/W
Glow indicator lamp
Ignition switch “ON”
Glow indicator lamp is “ON”
Approximately 1V
Ignition switch “ON”
Glow indicator lamp is “OFF”
BATTERY VOLTAGE
(11 - 14V)
111
LG
Glow relay
Refer to “SYSTEM DESCRIPTION”, EC-239.
GLOW CONTROL SYSTEM
ZD30DDTi
EC-240
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