Page 1257 of 3189
9 CHECK EGR VOLUME CONTROL VALVE-I
Check resistance between EGR volume control valve terminal 2 and terminals 1, 3, terminal 5 and terminals 4, 6.
YEC398A
OK or NG
OK (With CONSULT-II) GO TO 10.
OK (Without CONSULT-
II)GO TO 11.
NG Replace EGR volume control valve.
10 CHECK EGR VOLUME CONTROL VALVE-II
With CONSULT-II
1. Remove EGR volume control valve.
2. Reconnect ECM harness connector and EGR volume control valve harness connector.
3. Turn ignition switch “ON”.
4. Perform “EGR VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II.
5. Check that EGR volume control valve shaft moves smoothy forward and backward according to the valve opening
steps.
SEF819Y
OK or NG
OK GO TO 12.
NG Replace EGR volume control valve.
GI
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MT
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AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
EGR VOLUME CONTROL SYSTEMYD
Diagnostic Procedure (Cont’d)
EC-203
Page 1258 of 3189
11 CHECK EGR VOLUME CONTROL VALVE-II
Without CONSULT-II
1. Remove EGR volume control valve.
2. Reconnect ECM harness connector and EGR volume control valve harness connector.
3. Turn ignition switch “ON” and “OFF”.
4. Check that EGR volume control valve shaft moves smoothly forward and backward according to the ignition switch
position.
SEF560W
OK or NG
OK GO TO 12.
NG Replace EGR volume control valve.
12 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-71.
INSPECTION END
EGR VOLUME CONTROL SYSTEMYD
Diagnostic Procedure (Cont’d)
EC-204
Page 1259 of 3189
Wiring DiagramNJEC0769
YEC330A
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START SIGNALYD
Wiring Diagram
EC-205
Page 1260 of 3189

Diagnostic ProcedureNJEC0770
1 CHECK START SIGNAL OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch “ON”.
2. Check “START SIGNAL” in “DATA MONITOR” mode with CONSULT-II under the following conditions.
SEF604X
Without CONSULT-II
Check voltage between ECM terminal 422 and ground under the following conditions.
SEF909Y
OK or NG
OKINSPECTION END
NG GO TO 2.
2 CHECK START SIGNAL INPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector and ignition switch harness connector.
3. Check harness continuity between ECM terminal 422 and ignition switch terminal 6. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 4.
NG GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M63, F102
10A fuse
Fuse block (J/B) connectors M2, E104
Harness for open or short between ECM and ignition switch
Repair open circuit or short to ground or short to power in harness or connectors.
START SIGNALYD
Diagnostic Procedure
EC-206
Page 1261 of 3189
4 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-71.
INSPECTION ENDGI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
START SIGNALYD
Diagnostic Procedure (Cont’d)
EC-207
Page 1262 of 3189

DescriptionNJEC0781When the gear position is in “Neutral”, neutral position is “ON”. ECM detects the position because the conti-
nuity of the line (the “ON” signal) exists.
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0782Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW Ignition switch: ONShift lever: Neutral ON
Except above OFF
On models not equipped with park/neutral position (PNP) switch, “OFF” is always displayed regardless of gear shift position.
ECM Terminals and Reference ValueNJEC0783Specification 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 result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
418 G/ORPark/Neutral position
switch[Ignition switch “ON”]
Gear position is “Neutral”Approximately 0V
[Ignition switch “ON”]
Except the above gear positionBATTERY VOLTAGE
(11 - 14V)
PARK/NEUTRAL POSITION (PNP) SWITCH (WHERE FITTED)YD
Description
EC-208
Page 1263 of 3189
Wiring DiagramNJEC0784
YEC022A
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IDX
PARK/NEUTRAL POSITION (PNP) SWITCH (WHERE FITTED)YD
Wiring Diagram
EC-209
Page 1264 of 3189
Diagnostic ProcedureNJEC0785
1 CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-II.
3. Check “P/N POSI SW” signal under the following conditions.
SEF049Y
Without CONSULT-II
1. Turn ignition switch “ON”.
2. Check voltage between ECM terminal 418 and ground under the following conditions.
SEF914Y
OK or NG
OKINSPECTION END
NG GO TO 2.
PARK/NEUTRAL POSITION (PNP) SWITCH (WHERE FITTED)YD
Diagnostic Procedure
EC-210