Page 58 of 1306

SEC305D
PEF823K
Fuel Pressure ReleaseNEEC0024Before disconnecting fuel line, release fuel pressure from fuel
line to eliminate danger.
WITH CONSULT-IINEEC0024S011. Start engine.
2. Perform ªFUEL PRESSURE RELEASEº in ªWORK SUP-
PORTº mode with CONSULT-II.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch OFF.
SEC306D
WITHOUT CONSULT-IINEEC0024S021. Remove fuse for fuel pump.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch OFF and reconnect fuel pump fuse.
AEC064B
SEF318V
Fuel Pressure CheckNEEC0025+When reconnecting fuel line, always use new clamps.
+Make sure that clamp screw does not contact adjacent
parts.
+Use a torque driver to tighten clamps.
+Use Pressure Gauge to check fuel pressure.
+Do not perform fuel pressure check with system operat-
ing. Fuel pressure gauge may indicate false readings.
1. Release fuel pressure to zero.
2. Disconnect fuel hose between fuel filter and fuel tube (engine
side).
3. Install pressure gauge between fuel filter and fuel tube.
4. Start engine and check for fuel leakage.
5. Read the indication of fuel pressure gauge.
At idle speed:
With vacuum hose connected
Approximately 235 kPa (2.35 bar, 2.4 kg/cm
2,34
psi)
With vacuum hose disconnected
Approximately 294 kPa (2.94 bar, 3.0 kg/cm
2,43
psi)
BASIC SERVICE PROCEDUREKA24DE (EURO OBD)
Fuel Pressure Release
EC-3033
Page 60 of 1306

SEF500V
Fast Idle Cam (FIC)
COMPONENT DESCRIPTIONNEEC0502The FIC is installed on the throttle body to maintain adequate
engine speed while the engine is cold. It is operated by a volumet-
ric change in wax located inside the thermo-element. The thermo-
element is operated by engine coolant temperature.
For inspection refer to ªTROUBLE DIAGNOSIS-BASIC
INSPECTIONº, ªBasic Inspectionº, EC-3086.
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment
NEEC0028PREPARATIONNEEC0028S05+Make sure that the following parts are in good order.
a)Battery
b)Ignition system
c)Engine oil and coolant levels
d)Fuses
e)ECM harness connector
f)Vacuum hoses
g)Air intake system
(Oil filler cap, oil level gauge, etc.)
h)Fuel pressure
i)Engine compression
j)Throttle valve
k)EVAP system
+On models equipped with air conditioner, checks should be carried out while the air conditioner is
ªOFFº.
+When measuring ªCOº percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
+Turn off headlamps, heater blower.
+Keep front wheels pointed straight ahead.
BASIC SERVICE PROCEDUREKA24DE (EURO OBD)
Fast Idle Cam (FIC)
EC-3035
Page 95 of 1306
SEC305D
CONSULT-II=NEEC0034CONSULT-II INSPECTION PROCEDURENEEC0034S011. Turn ignition switch OFF.
2. Connect ªCONSULT-IIº to data link connector which is located
behind the fuse box cover.
PBR455D
3. Turn ignition switch ON.
4. Touch ªSTARTº.
PEF895K
5. Touch ªENGINEº.
SEC308D
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation
Manual.
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION
KA24DE (EURO OBD)
CONSULT-II
EC-3070
Page 105 of 1306
SEF139P
Generic Scan Tool (GST)=NEEC0035DESCRIPTIONNEEC0035S01Generic Scan Tool (OBDII scan tool) complying with ISO 15031-4
has 8 different functions explained on the next page.
ISO9141 is used as the protocol.
The name ªGSTº or ªGeneric Scan Toolº is used in this service
manual.
SEC305D
GST INSPECTION PROCEDURENEEC0035S021. Turn ignition switch OFF.
2. Connect ªGSTº to data link connector for GST which is located
under LH dash panel near the fuse box cover.
SEF398S
3. Turn ignition switch ON.
4. Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)
SEF416S
5. Perform each diagnostic mode according to each service pro-
cedure.
For further information, see the GST Operation Manual of the
tool maker.
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION
KA24DE (EURO OBD)
Generic Scan Tool (GST)
EC-3080
Page 152 of 1306

DIAGNOSTIC PROCEDURE=NEEC0049
1 INSPECTION START
Start engine.
Is engine running?
YesorNo
Ye s©GO TO 9.
No©GO TO 2.
2 CHECK POWER SUPPLY-I
1. Turn ignition switch OFF and then ON.
2. Check voltage between ECM terminal 24 and ground with CONSULT-II or tester.
SEF600P
Voltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
+40A fusible link
+Harness connectors E101, M5
+Ignition switch
+Fuse block M10, M12
+10A fuse
+Harness for open or short between ECM and battery
©Repair harness or connectors.
4 CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 10, 19, 25, 32, 116, 124 and engine ground.
Refer to WIRING DIAGRAM.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK©GO TO 5.
NG©Repair open circuit or short to power in harness or connectors.
TROUBLE DIAGNOSIS FOR POWER
SUPPLY
KA24DE (EURO OBD)
Main Power Supply and Ground Circuit
EC-3127
Page 153 of 1306

5 CHECK POWER SUPPLY-II
1. Disconnect ECM relay.
LEC106A
2. Check voltage between ECM relay terminals 1, 3 and ground with CONSULT-II or tester.
SEC313D
Voltage: Battery voltage
OK or NG
OK©GO TO 7.
NG©GO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
+10A fuse
+Harness for open or short between ECM relay and battery
©Repair open circuit or short to ground or short to power in harness or connectors.
7 CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 4 and ECM relay terminal 2. Refer to WIRING DIAGRAM.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK©Go to ªIGNITION SIGNALº, EC-3361.
NG©GO TO 8.
8 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+Harness for open or short between ECM relay and ECM
©Repair open circuit or short to ground or short to power in harness or connectors.
TROUBLE DIAGNOSIS FOR POWER
SUPPLY
KA24DE (EURO OBD)
Main Power Supply and Ground Circuit
EC-3128
Page 154 of 1306
9 CHECK POWER SUPPLY-II
1. Stop engine.
2. Check voltage between ECM terminal 80 and ground with CONSULT-II or tester.
MEC698B
Voltage: Battery voltage
OK or NG
OK©GO TO 11.
NG©GO TO 10.
10 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+10A fuse
+Harness for open or short between ECM and fuse
©Repair harness or connectors.
11 CHECK POWER SUPPLY-III
1. Turn ignition switch ON and then OFF.
2. Check voltage between ECM terminals 67, 72, 117 and ground with CONSULT-II or tester.
SEF121V
Voltage:
After turning ignition switch OFF, battery voltage will exist for a few seconds, then drop to approximately
0V.
OK or NG
OK©GO TO 19.
NG (Battery voltage
does not exist.)©GO TO 12.
NG (Battery voltage
exists for more than a
few seconds.)©GO TO 18.
TROUBLE DIAGNOSIS FOR POWER
SUPPLY
KA24DE (EURO OBD)
Main Power Supply and Ground Circuit
EC-3129
Page 156 of 1306
14 CHECK VOLTAGE BETWEEN ECM RELAY AND GROUND
Check voltage between ECM relay terminals 1, 6 and ground with CONSULT-II or tester.
SEC268D
Voltage: Battery voltage
OK or NG
OK©GO TO 16.
NG©GO TO 15.
15 DETECT MALFUNCTIONING PART
Check the following.
+10A fuse
+Harness for open or short between ECM relay and fuse
©Repair harness or connectors.
16 CHECK OUTPUT SIGNAL CIRCUIT
1. Check harness continuity between ECM terminal 4 and ECM relay terminal 2.
SEC269D
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 18.
NG©GO TO 17.
17 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+Harness for open or short between ECM and ECM relay
©Repair harness or connectors.
TROUBLE DIAGNOSIS FOR POWER
SUPPLY
KA24DE (EURO OBD)
Main Power Supply and Ground Circuit
EC-3131