EC-632
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000001693449
The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Component Function CheckINFOID:0000000001693450
1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-632, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693451
1.CHECK GROUND CONNECTION
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine.
3. Turn ignition switch OFF.
4. Check ground connection E15. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between refrigerant pressure sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
PBIB2657E
(+) (–)
Voltage
Connector Terminal Connector Terminal
F1141
(Refrigerant pressure sensor signal)F11 48 1.0 - 4.0V
Refrigerant pressure sensor
Ground Voltage
Connector Terminal
E17 3 Ground Approx. 5V
REFRIGERANT PRESSURE SENSOR
EC-633
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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3.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E8, F8
Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E8, F8
Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between ECM harness connector and refrigerant pressure sensor harness connec-
tor.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E8, F8
Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace refrigerant pressure sensor.
NO >> Repair or replace.
Refrigerant pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
E17 1 F11 48 Existed
Refrigerant pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
E17 2 F11 41 Existed
ECM
EC-635
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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ECU DIAGNOSIS
ECM
Reference ValueINFOID:0000000001693499
VALUES ON THE DIAGNOSIS TOOL
Remarks:
Specification data are reference values.
Specification data are output/input values which are detected or supplied by the ECM at the connector.
*Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the
specification data in spite of the ignition timing not being adjusted to the specification data. this IGN TIMING
monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and
other ignition timing related sensors.
Monitor Item Condition Values/Status
ENG SPEED Run engine and compare CONSULT-III value with the tachometer indication.Almost the same speed as
the tachometer indication.
MAS A/F SE-B1 See EC-477, "
Diagnosis Procedure".
B/FUEL SCHDL See EC-477, "
Diagnosis Procedure".
A/F ALPHA-B1 See EC-477, "
Diagnosis Procedure".
COOLAN TEMP/S Engine: After warming up More than 70°C (158F)
HO2S1 (B1) Engine: After warming up Maintaining engine speed at 2,000 rpm0 - 0.3V ←→ Approx. 0.6 -
1.0V
HO2S2 (B1) Revving engine from idle up to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load0 - 0.3V ←→ Approx. 0.6 -
1.0V
HO2S1 MNTR (B1) Engine: After warming up Maintaining engine speed at 2,000 rpmLEAN ←→ RICH
Changes more than 5 times
during 10 seconds
HO2S2 MNTR (B1) Revving engine from idle up to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no loadLEAN ←→ RICH
VHCL SPEED SE Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.Almost the same speed as
speedometer indication
BATTERY VOLT Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN 1 Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 4.0 - 4.8V
ACCEL SEN 2 Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 3.9 - 4.8V
THRL SEN 1-B1 Ignition switch: ON
(Engine stopped)
Shift lever: D (A/T) or 1st (M/T)Accelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
THRL SEN 2-B1 Ignition switch: ON
(Engine stopped)
Shift lever: D (A/T) or 1st (M/T)Accelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
START SIGNAL Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
EC-638
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ECM
*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from
ECM terminals voltage signal.
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
ECM is located in the engine room left side near battery.
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
CRUISE LAMP Ignition switch: ONMAIN switch: Pressed at the 1st time →
at the 2nd timeON → OFF
SET LAMP MAIN switch: ON
When vehicle speed: Between 40
km/h (25 MPH) and 153 km/h (95
MPH)ASCD: Operating ON
ASCD: Not operating OFF Monitor Item Condition Values/Status
PBIA9221J
Te r m i n a l N o .
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
1GroundL/WThrottle control motor
(Open)Output[Ignition switch: ON]
Engine stopped
Shift lever: D (A/T) or 1st (M/
T)
Accelerator pedal: Fully de-
pressed3.2V
2GroundR/YThrottle control motor relay
power supplyInput [Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
3GroundLG/RHeated oxygen sensor 1
heaterOutput[Engine is running]
Warm up condition
Engine speed: Below 3,600
rpmApproximately 3.2V
[Engine is running]
Warm-up condition
Idle speed
[Engine is running]
Engine speed: Above 3,600
rpmBATTERY VOLTAGE (11 - 14V)
PBIA8150J
PBIA8148J
ECM
EC-639
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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4GroundPThrottle control motor
(Close)Output[Ignition switch: ON]
Engine stopped
Shift lever: D (A/T) or 1st (M/
T)
Accelerator pedal: Fully re-
leased0 - 14V
5GroundRHeated oxygen sensor 2
heaterOutput[Engine is running]
Engine speed: Below 3,900
rpm after the following con-
ditions 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 load10V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,900
rpmBATTERY VOLTAGE
(11 - 14V)
9GroundW/BEVAP canister purge volume
control solenoid valveOutput[Engine is running]
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed: About 2,000
rpm (More than 100 sec-
onds after starting engine.)BATTERY VOLTAGE
(11 - 14V)
10
11GroundB
B/WECM ground —[Engine is running]
Idle speedBody ground
15 Ground G/L Throttle control motor relay Output[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON] 0 - 1.0V Terminal No.
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
PBIA8149J
PBIA8148J
PBIB0050E
PBIB0520E
ECM
EC-641
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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33 Ground L/R Throttle position sensor 1 Input[Ignition switch: ON]
Engine stopped
Shift lever: D (A/T) or 1st (M/
T)
Accelerator pedal: Fully re-
leasedMore than 0.36V
[Ignition switch: ON]
Engine stopped
Shift lever: D (A/T) or 1st (M/
T)
Accelerator pedal: Fully de-
pressedLess than 4.75V
34 Ground L/O Throttle position sensor 2 Input[Ignition switch: ON]
Engine stopped
Shift lever: D (A/T) or 1st (M/
T)
Accelerator pedal: Fully re-
leasedLess than 4.75V
[Ignition switch: ON]
Engine stopped
Shift lever: D (A/T) or 1st (M/
T)
Accelerator pedal: Fully de-
pressedMore than 0.36V
36 Ground V/WSensor ground
(Throttle position sensor)—[Engine is running]
Warm-up condition
Idle speed0V
37 Ground W Knock sensor Input[Engine is running]
Idle speed2.5V
38 Ground GR/BEngine coolant temperature
sensorInput [Engine is running]0 - 4.8V
Output voltage varies with engine
coolant temperature.
40 Ground —Sensor ground
(Knock sensor)—[Engine is running]
Warm-up condition
Idle speed0V
41 Ground G/P Refrigerant pressure sensor Input[Engine is running]
Warm-up condition
Both A/C switch and blower
fan motor switch: ON (Com-
pressor operates)1.0 - 4.0V
44 Ground BSensor ground
(Engine coolant temperature
sensor)—[Engine is running]
Warm-up condition
Idle speed0V
45 Ground BR Mass air flow sensor Input[Ignition switch ON]
Engine stopped0.4V
[Engine is running]
Warm-up condition
Idle speed1.0 - 1.3V
[Engine is running]
Warm-up condition
Engine is revving from idle
to about 4,000 rpm1.0 - 1.3 to 2.4V (Check for linear
voltage rise in response to en-
gine being increased to about
4,000 rpm.)
46 Ground VIntake air temperature sen-
sorInput [Engine is running]0 - 4.8V
Output voltage varies with intake
air temperature. Terminal No.
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
EC-642
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ECM
48 Ground R/LSensor ground
(Refrigerant pressure sen-
sor)—[Engine is running]
Warm-up condition
Idle speed0V
49 Ground L/G Heated oxygen sensor 1 —[Engine is running]
Warm-up condition
Engine speed: 2,000 rpm0 - 1.0V
(Periodically change)
50 Ground Y Heated oxygen sensor 2 Input[Engine is running]
Revving engine from idle to
3,000 rpm quickly 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 load0 - 1.0V
52 Ground LGSensor ground
(Mass air flow sensor)—[Engine is running]
Warm-up condition
Idle speed0V
55 Ground OSensor power supply
(Intake air temperature sen-
sor)—[Engine is running]
Warm-up condition
Idle speed0V
56 Ground PSensor ground
(Heated oxygen sensor 1)—[Engine is running]
Warm-up condition
Idle speed0V
59 Ground SBSensor ground
(Heated oxygen sensor 2)—[Engine is running]
Warm-up condition
Idle speed0V
61 Ground LG/BCrankshaft position sensor
(POS)Input[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle0 - 1.0V
[Engine is running]
Engine speed: 2,000 rpm0 - 1.0V
62 Ground GR/LSensor ground
[Crankshaft position sensor
(POS)]—[Engine is running]
Warm-up condition
Idle speed0V
63 Ground LSensor ground
[Camshaft position sensor
(PHASE)]—[Engine is running]
Warm-up condition
Idle speed0V Te r m i n a l N o .
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
MBIB1453E
MBIB1454E
ECM
EC-643
< ECU DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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65 Ground GCamshaft position sensor
(PHASE)Input[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle0 - 1.0V
[Engine is running]
Engine speed is 2,000 rpm0 - 1.0V
69 Ground W/B Neutral position switch Input[Ignition switch: ON]
Shift lever: P or N (A/T),
Neutral (M/T)BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
Shift lever: Except above
position0V
72 Ground V/RSensor power supply
(Throttle position sensor)— [Ignition switch: ON] 5V
73 Ground Y/RIntake valve timing control
solenoid valveOutput[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed: 2,000rpm7 - 10V
74 Ground Y/WSensor power supply
(Refrigerant pressure sen-
sor)— [Ignition switch: ON] 5V
75 Ground L/WSensor power supply
[Crankshaft position sensor
(POS)]— [Ignition switch: ON] 5V
78 Ground Y/VSensor power supply
[Camshaft position sensor
(PHASE)]— [Ignition switch: ON] 5V
83 Ground P CAN communication lineInput/
Output——
84 Ground L CAN communication lineInput/
Output——
88 Ground O Data link connectorInput/
Output[Ignition switch: ON]
CONSULT-III or GST: Dis-
connected2.7V Terminal No.
Wire
colorDescription
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
OutputMBIB1455E
MBIB1456E
PBIA4937J