TROUBLE DIAGNOSIS
EC-605
[QR (WITHOUT EURO-OBD)]
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ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
*1: This item includes 1st trip DTCs.ItemDIAGNOSTIC TEST MODE
WORK
SUPPORTSELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TORDATA
MONITOR
(SPEC)ACTIVE
TEST DTC*
1FREEZE
FRAME
DATA*
2
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)××××
Camshaft position sensor (PHASE)×××
Mass air flow sensor×××
Engine coolant temperature sensor×××××
Heated oxygen sensor 1×××
Heated oxygen sensor 2××
Vehicle speed signal××××
Accelerator pedal position sensor×××
Throttle position sensor×××
Intake air temperature sensor××
Knock sensor×
Refrigerant pressure sensor××
Closed throttle position switch (accelerator
pedal position sensor signal)××
Air conditioner switch××
Park/neutral position (PNP) switch×××
Stop lamp switch×××
Power steering pressure sensor×××
Battery voltage××
Electrical load signal××
ASCD steering switch*
3×××
ASCD brake switch*
3×××
ASCD clutch switch*
3×××
ENGINE CONTROL COMPONENT PARTS
OUTPUT
Fuel injectors×××
Power transistor (Ignition timing)×××
Throttle control motor relay×××
Throttle control motor×
EVAP canister purge volume control sole-
noid valve×××
Air conditioner relay××
Fuel pump relay××××
Cooling fan relay××××
Heated oxygen sensor 1 heater××
Heated oxygen sensor 2 heater××
Intake valve timing control solenoid valve××××
VIAS control solenoid valve*
3×××
TROUBLE DIAGNOSIS
EC-609
[QR (WITHOUT EURO-OBD)]
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START SIGNAL
[ON/OFF]××Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals of
engine speed and battery voltage.After starting the engine, [OFF] is
displayed regardless of the starter
signal.
CLSD THL POS
[ON/OFF]××
Indicates idle position [ON/OFF] computed by
ECM according to the accelerator pedal posi-
tion sensor signal.
AIR COND SIG
[ON/OFF]××
Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condi-
tioner signal.
P/N POSI SW
[ON/OFF]××
Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.
PW/ST SIGNAL
[ON/OFF]××
[ON/OFF] condition of the power steering
pressure sensor as determined by the power
steering pressure sensor signal is indicated.
LOAD SIGNAL
[ON/OFF]××
Indicates [ON/OFF] condition from the electri-
cal load signal.
ON: Rear window defogger switch is ON and/
or lighting switch is in 2nd position (placed in
LOW position for models with Xenon head-
lamp).
OFF: Both rear window defogger switch and
lighting switch are OFF.
IGNITION SW
[ON/OFF]×
Indicates [ON/OFF] condition from ignition
switch.
HEATER FAN SW
[ON/OFF]×
Indicates [ON/OFF] condition from the heater
fan switch signal.
BRAKE SW
[ON/OFF]×
Indicates [ON/OFF] condition from the stop
lamp switch signal.
INJ PULSE-B1
[msec]×
Indicates the actual fuel injection pulse width
compensated by ECM according to the input
signals.When the engine is stopped, a
certain computed value is indi-
cated.
IGN TIMING [BTDC]×
Indicates the ignition timing computed by ECM
according to the input signals.When the engine is stopped, a
certain value is indicated.
PURG VOL C/V [%]
Indicates the EVAP canister purge volume
control solenoid valve control value computed
by the ECM according to the input signals.
The opening becomes larger as the value
increases.
INT/V TIM (B1)
[°CA]
Indicates [°CA] of intake camshaft advanced
angle.
INT/V SOL (B1) [%]
The control value of the intake valve timing
control solenoid valve (determined by ECM
according to the input signal) is indicated.
The advance angle becomes larger as the
value increases
VIAS S/V*
[ON/OFF]
The control condition of the VIAS control sole-
noid valve (determined by ECM according to
the input signals) is indicated.
ON: VIAS control solenoid valve is operating.
OFF: VIAS control solenoid valve is not oper-
ating.
AIR COND RLY
[ON/OFF]×
The air conditioner relay control condition
(determined by ECM according to the input
signals) is indicated. Monitored item [Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks
EC-610
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
FUEL PUMP RLY
[ON/OFF]×Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
THRTL RELAY
[ON/OFF]×
Indicates the throttle control motor relay con-
trol condition determined by the ECM accord-
ing to the input signals.
COOLING FAN
[HI/LOW/OFF]
Indicates the condition of the cooling fan
(determined by ECM according to the input
signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop
HO2S1 HTR (B1)
[ON/OFF]
Indicates [ON/OFF] condition of heated oxy-
gen sensor 1 heater determined by ECM
according to the input signals.
HO2S2 HTR (B1)
[ON/OFF]
Indicates [ON/OFF] condition of heated oxy-
gen sensor 2 heater determined by ECM
according to the input signals.
IDL A/V LEARN
[YET/CMPLT]
Display the condition of Idle Air Volume Learn-
ing
YET: Idle Air Volume Learning has not been
performed yet.
CMPLT: Idle Air Volume Learning has already
been performed successfully.
AC PRESS SEN [V]
The signal voltage from the refrigerant pres-
sure sensor is displayed.
VHCL SPEED SE*
[km/h] or [mph]
The vehicle speed computed from the vehicle
speed signal sent from TCM is displayed.
SET VHCL SPD*
[km/h] or [mph]
The preset vehicle speed is displayed.
MAIN SW*
[ON/OFF]
Indicates [ON/OFF] condition from MAIN
switch signal.
CANCEL SW*
[ON/OFF]
Indicates [ON/OFF] condition from CANCEL
switch signal.
RESUME/ACC SW*
[ON/OFF]
Indicates [ON/OFF] condition from RESUME/
ACCELERATE switch signal.
SET SW*
[ON/OFF]
Indicates [ON/OFF] condition from SET/
COAST switch signal.
BRAKE SW1*
[ON/OFF]
Indicates [ON/OFF] condition from ASCD
brake switch signal.
BRAKE SW2*
[ON/OFF]
Indicates [ON/OFF] condition of stop lamp
switch signal.
VHCL SPD CUT*
[NON/CUT]
Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the
ASCD set speed.
CUT: Vehicle speed increased to excessively
high compared with the ASCD set speed, and
ASCD operation is cut off.
LO SPEED CUT*
[NON/CUT]
Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the
ASCD set speed.
CUT: Vehicle speed decreased to excessively
low compared with the ASCD set speed, and
ASCD operation is cut off. Monitored item [Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks
TROUBLE DIAGNOSIS
EC-617
[QR (WITHOUT EURO-OBD)]
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*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ
from ECM terminals voltage signals.
*2: For QR25DE engine modelsCOOLING FAN
Engine: After warming up, idle
the engine
Air conditioner switch: OFFEngine coolant temperature is 94°C
(201°F) or lessOFF
Engine coolant temperature is
between 95°C (203°F) and 99°C
(210°F)LOW
Engine coolant temperature is
100°C (212°F) or moreHIGH
HO2S1 HTR (B1)
Engine: After warming up
Engine speed: Below 3,600 rpmON
Engine speed: Above 3,600 rpm OFF
HO2S2 HTR (B1)
Engine speed is below 3,600 rpm after the following conditions are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute
and at idle for 1 minute under no load.ON
Engine speed: Above 3,600 rpm OFF
O2SEN HTR DTY
Engine coolant temperature when engine started: More than 80°C
(176°F)
Engine speed: below 3,600 rpmApprox. 50%
AC PRESS SEN
Engine: Idle
Both A/C switch and blower fan seitch: ON (Compressor operates)1.0 - 4.0V
VEH SPEED SE*
2Turn drive wheels and compare CONSULT-II value with the speedome-
ter indication.Almost the same speed as the
speedometer indication
SET VHCL SPD*
2Engine: Running ASCD: Operating.The preset vehicle speed is dis-
played.
MAIN SW*
2Ignition switch: ONMAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW*
2Ignition switch: ONCANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW*
2Ignition switch: ONRESUME/ACCELERATE switch:
PressedON
RESUME/ACCELERATE switch:
ReleasedOFF
SET SW
Ignition switch: ONSET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
BRAKE SW1*
2Ignition switch: ONClutch pedal (M/T) and brake pedal:
Fully releasedON
Clutch pedal (M/T) and/or brake
pedal: Slightly depressedOFF
BRAKE SW2*
2Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
CRUISE LAMP*
2Ignition switch: ONMAIN switch: Pressed at the 1st
time → at the 2nd timeON → OFF
SET LAMP*
2
MAIN switch: ON
Vehicle speed: Between 40 km/h
(25 MPH) and 144 km/h (89
MPH)ASCD: Operating ON
ASCD: Not operating OFF MONITOR ITEM CONDITION SPECIFICATION
DTC P1720 VSS
EC-807
[QR (WITHOUT EURO-OBD)]
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DTC P1720 VSSPFP:31036
DescriptionEBS018OH
NOTE:
If DTC P1720 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
EC-633, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from ESP/TCS/ABS
control unit (models with ESP) or “ABS actuator and electric unit (control unit)”(models without ESP), and the
other is from TCM (Transmission control module). ECM uses these two signals for engine control.
CONSULT-II Reference Value in Data Monitor ModeEBS018OI
Specification data are reference values.
On Board Diagnosis LogicEBS018OJ
The MI will not light up for this diagnosis.
DTC Confirmation ProcedureEBS018OK
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine.
4. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without brake pedal depress-
ing.
5. If 1st trip DTC is detected, go to EC-808, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without brake pedal depress-
ing.
3. Stop the vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
MONITOR ITEM CONDITION SPECIFICATION
VEH SPEED SE
Turn drive wheels and compare the CONSULT-II value with speedometer
indicationAlmost the same speed as the
speedometer indication
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1720
1720Vehicle speed sensor
(A/T output)ECM detects a difference between two
vehicle speed sensor signals is out of the
specified range.
Harness or connectors
(The CAN communication line is open or
shorted)
Harness or connectors
(Revolution sensor circuit is open or shorted)
Harness or connectors
(Wheel sensor circuit is open or shorted.)
TCM
ESP/TCS/ABS control unit (models with ESP)
“ABS actuator and electric unit (control unit)”
(models without ESP)
Combination meter
Wheel sensor
Revolution sensor
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-969
[QR (WITHOUT EURO-OBD)]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionEBS01FBZ
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press ASCD MAIN switch. (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET indicator in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
CANCEL switch is pressed
More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
Brake pedal is depressed
Clutch pedal is depressed or gear position is changed to the neutral position
Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
ESP/TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator Stop lamp switch Brake pedal operation
ASCD clutch switch (M/T models) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switchGear position
Wheel sensor* Vehicle speed
INDEX FOR DTC
EC-973
[YD (WITH EURO-OBD)]
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[YD (WITH EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS0116O
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the “Type approval number” on the
identification plate. Refer to GI-46, "
IDENTIFICATION PLATE" .
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-1056, "
DTC U1000 CAN COMMUNICATION LINE" .
X: Applicable —: Not applicable
Items
(CONSULT-II screen terms) DTC*
1
TripMI lighting
up Reference page
CONSULT-II
GST*
2ECM*3
APP SEN 1/CIRCUIT P0122 0122 1 —EC-1099
APP SEN 1/CIRCUIT P0123 0123 1 —EC-1099
APP SEN 2/CIRCUIT P0222 0222 1 —EC-1138
APP SEN 2/CIRCUIT P0223 0223 1 —EC-1138
APP SENSOR P2135 2135 1 —EC-1285
BARO SEN/CIRC P2228 2228 3×EC-1303
BARO SEN/CIRC P2229 2229 3×EC-1303
BATTERY VOLTAGE P0563 0563 1 —EC-1215
BRAKE SW/CIRCUIT P0504 0504 1 —EC-1206
CAN COMM CIRCUIT U1000
1000*41—EC-1056
CKP SEN/CIRCUIT P0335 0335 3×EC-1157
CKP SENSOR P0336 0336 3×EC-1163
CMP SEN/CIRCUIT P0340 0340 3×EC-1169
CMP SENSOR P0341 0341 3×EC-1175
CMP/CKP RELATION P0016 0016 3×EC-1059
CYL1 INJECTOR P0201 0201 3×E C - 111 8
CYL2 INJECTOR P0202 0202 3×E C - 111 8
CYL3 INJECTOR P0203 0203 3×E C - 111 8
CYL4 INJECTOR P0204 0204 3×E C - 111 8
ECM P0605 0605 3×EC-1227
ECM P0606 0606 3×EC-1229
ECM RELAY P0686 0686 1 —EC-1245
ECT SEN/CIRC P0117 0117 3×EC-1093
ECT SEN/CIRC P0118 0118 3×EC-1093
EGR SYSTEM P0401 0401 3×EC-1186
EGR VALVE P0404 0404 3×EC-1193
ENG OVER TEMP P0217 0217 1×EC-1124
FRP RELIEF VALVE P1272 1272 3×EC-1263
FRP SEN/CIRC P0192 0192 3×E C - 111 0
FRP SEN/CIRC P0193 0193 3×E C - 111 0
FUEL LEAK P0093 0093 3×EC-1071
FUEL PUMP P0089 0089 3×EC-1068
FUEL PUMP P1273 1273 3×EC-1270
FUEL PUMP P1274 1274 1×EC-1275
FUEL PUMP P1275 1275 1×EC-1280
INDEX FOR DTC
EC-977
[YD (WITH EURO-OBD)]
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P0380 0380 GLOW RELAY 3×EC-1182
P0401 0401 EGR SYSTEM 3×EC-1186
P0404 0404 EGR VALVE 3×EC-1193
P0501 0501 VEHICLE SPEED 1 —EC-1200
P0502 0502 VEHICLE SPEED 1 —EC-1202
P0503 0503 VEHICLE SPEED 1 —EC-1204
P0504 0504 BRAKE SW/CIRCUIT 1 —EC-1206
P0563 0563 BATTERY VOLTAGE 1 —EC-1215
P0580 0580 STRG SW/CIRC 1 —EC-1218
P0581 0581 STRG SW/CIRC 1 —EC-1218
P0605 0605 ECM 3×EC-1227
P0606 0606 ECM 3×EC-1229
P0628 0628 FUEL PUMP/CIRC 3×EC-1231
P0629 0629 FUEL PUMP/CIRC 3×EC-1231
P0642 0642 SENSOR PWR/CIRC1 3×EC-1236
P0643 0643 SENSOR PWR/CIRC1 3×EC-1236
P0652 0652 SENSOR PWR/CIRC2 3×EC-1240
P0653 0653 SENSOR PWR/CIRC2 3×EC-1240
P0686 0686 ECM RELAY 1 —EC-1245
P1211 1211 TCS C/U FUNCTN 1 —EC-1249
P1212 1212 TCS/CIRC 1 —EC-1250
P1260 1260 INJ ADJ RES/CIRC1 3×EC-1251
P1261 1261 INJ ADJ RES/CIRC1 3×EC-1251
P1262 1262 INJ ADJ RES/CIRC2 3×EC-1251
P1263 1263 INJ ADJ RES/CIRC2 3×EC-1251
P1264 1264 INJ ADJ RES/CIRC3 3×EC-1251
P1265 1265 INJ ADJ RES/CIRC3 3×EC-1251
P1266 1266 INJ ADJ RES/CIRC4 3×EC-1251
P1267 1267 INJ ADJ RES/CIRC4 3×EC-1251
P1268 1268 INJECTOR 1 1 —EC-1257
P1269 1269 INJECTOR 2 1 —EC-1257
P1270 1270 INJECTOR 3 1 —EC-1257
P1271 1271 INJECTOR 4 1 —EC-1257
P1272 1272 FRP RELIEF VALVE 3×EC-1263
P1273 1273 FUEL PUMP 3×EC-1270
P1274 1274 FUEL PUMP 1×EC-1275
P1275 1275 FUEL PUMP 1×EC-1280
P1610 - P1617 1610 - 1617 NATS MALFUNTION 1 —EC-1001
P2135 2135 APP SENSOR 1 —EC-1285
P2146 2146 INJ PWR/CIRC 3×EC-1292
P2147 2147 INJECTOR/CIRC 3×EC-1297
P2148 2148 INJECTOR/CIRC 3×EC-1297
DTC*1
Items
(CONSULT-II screen item) TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3