Tester connection Conditions Standard state
C(60°C)164.5±5 ohm
C 24- ground 1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohmConditions Standard state
C(60°C)164.5±5 ohm
1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohm5-14 (1) Use diagnostic instrument to read engine water temperature value
a. Connect diagnostic instrument to diagnostic interface
b. Turn on ignition switch
c. Read water temperature value displayed on diagnostic instrument
Standard: the same as actual engine cooling water temperature
Result and measures:
Normal, water thermometer does not fail
Abnormal, check combination instrument assy.
(2) Check combination instrument assy.
a. Check resistance
Remove combination instrument assy. , disconnect connector.
Check connection between terminals
Standard:
Result and measures:
Normal, replace combination instrument assy.
Abnormal, check water temperature sensor
b. Check water temperature sensor
Remove water temperature sensor and put it in thermostat.
Adjust temperature of thermostat and measure resistance value of water temperature sensor
Standard:
Result and measures:
Normal, repair or replace wiring harness and connector
Abnormal, replace water temperature sensor
5. Fuel gauge fails
Circuit diagramCombination Instrument System -Malfunction Symptom Table and Troubleshooting combination instrument assy
Fuel Sensor
Fuel Signal
Chapter 4 Light SystemSection 1 Light System IntroductionI. Composition Light system comprises external illumination and signal system and internal illumination system.
The function of the external illumination and signal system is to illuminate the road ahead and send signals
to other vehicles.
The internal illumination system provides internal illumination for driver and passengers.II. Precaution for service1. Precaution when repairing electrical equipments
Disconnect the battery ground cable.
2. Precaution when replacing a headlamp bulb
(1) Before replacing a halogen bulb, turn the headlamp OFF to make it cool.
(2) When installing a new halogen bulb, do not touch the glass part of the bulb with bare hands.
(3) If there is oil stain on the surface of halogen bulb (headlamp and front fog lamp) when the lamps are
turned ON, its service life will be shortened.
(4) Halogen bulbs (headlamp and front fog lamp) have pressurized gas inside and require special handling.
They can explode if dropped to ground. The glass fragments will splash up.
(5) When replacing, make sure to use the bulbs with the same power, same model.
(6) After the bulb is installed, make the lamp holder tight.III. Bulb specificationsRemark: All bulbs are made by Philips Corp..Light System-
Light System Introduction5-26Name Specifications
Headlamp (High beam and Low beam) H1 12V 55W
Turn signal lamp PY21W 12V 21W
Position lamp W5W 12V 5W
Front fog lamp H3 12V 55W
Rear combination lamp (Turn signal lamp) PY21W 12V 21W
Rear combination lamp (Brake / Position lamp) P21/5W 12V 21/5W
Rear combination lamp (Rear fog lamp) P21W 12V 21W
Rear combination lamp (Back-up lamp) P21W 12V 21W
Interior lamp (dome lamp) R5W 12V 5W
Rear row reading lamp C5W 12V 5W
Side turn signal lamp W5W 12V 5W
High mounted stop lamp (incl. rear trunk lamp) W5W 12V 5W
License plate lamp W5W 12V 5W
Door courtesy lamp W5W 12V 5W
Symptom
Rear fog lamp dose not light up with light control
switch on FRONT FOG LAMP (Small lamp is
normal).
Rear fog lamp dose not light up with light control
switch on FRONT FOG LAMP (Small lamp is
abnormal).
Only one side rear fog lamp dose not lightSuspected Area
1. Bulb
2. Light switch assembly
3. Harness
1. Bulb
2. Tail lamp fuse
3. Harness
1. Bulb
2. Harness 3. Rear fog lamp system
Symptom
"Hazard" and "Turn" does not work
Hazard warning lamp does not work (Turn is
normal)
Hazard warning lamp is abnormal (Hazard is
abnormal)
Turn signal dose not light up in one direction
Only one bulb dose not light upSuspected Area
1. HAZARD Fuse
2. Central controller
3. Harness
1. Hazard warning switch
2. Harness
1. Turn signal switch
2. Harness
1. Turn signal switch
2. Harness
1. Bulb
2. Harness
Symptom
Brake lamps on both sides do not light up
Brake lamp remains always ON
Brake lamp dose not light (One side)
High mounted Brake lamp dose not light up
(Stop lamp is normal)4. Turn signal and hazard warning system
5. Brake lamp system
Suspected Area
1. Brake lamp fuse
2. Brake lamp switch
3. Harness
1. Brake lamp switch
2. Harness
1. Bulb
2. Harness
1. Bulb
2. HarnessLight System -Light System Malfunction Inspection5-29
Section 2 Audio System Connector Terminal Layout2. Connect terminal definitionAudio System -Audio System Connector Terminal Layout5-401. Connector terminal layout on wire harnessCondition
The audio system is on
The audio system is on
Ignition switch turned to ACC
Constant Status
The audio system is on
The audio system is on
Normal Status
Position lamp switch turned to ON
The audio system is on
The audio system is on
The audio system is on
The audio system is on
Normal Status
Audio system is On
Normal Status
Ignition switch ACC
The audio system is on
The audio system is on
Normal Status Function
FR+
FL+
ACC
B+
FR-
FL-
GND
Null
Mute
TAIL
RR+
RL+
RR-
Null
Null
RL-
B+
BUS
GND
ACC
Null
R-OUT
L-OUTGND(Audio Frequency)Terminal No.
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
B1
B2
B3
B4
B5
B6
C1
C2
C3
C4
C5
C6
C7
C8Wire color
Lg
WB
RY
R
LgR
W
B
V
G W
PB
YR
P
Y WStandard Voltage
Wave form is synchronized with the output sound
Wave form is synchronized with the output sound
10~14V
10~14V
Wave form is synchronized with the output sound
Wave form is synchronized with the output sound
ON
10~14V
Wave form is synchronized with the output sound
Wave form is synchronized with the output sound
Wave form is synchronized with the output sound
Wave form is synchronized with the output sound
10~14V
Pulse Signal
ON
10~14VWave form is synchronized with the output sound
Wave form is synchronized with the output soundON
Tester connection Condition Standard Status
GND Nomal ON Normal: Replace the signal wire connecting magnet head unit and CD box
Abnormal: Check the radio assembly (+B, ACC, GND)
(3) Check the radio assembly (+B, ACC, GND)
a. Check the continuity between terminals under each operating condition as shown in the table below.
Standard: c. Check the voltage between terminals under each operating condition as shown in the table below.
Standard: Normal: Replace CD, DVD box
Abnormal: Check if the head unit side C socket voltage output is NORMAL
(2) Check if the head unit side C socket voltage output is NORMAL _
a. Turn the ignition switch to ACC
b. Check the continuity between the magnet head unit C socket terminals under each operating condition
as shown in the table below
Standard: c. Check the voltage between terminals under each operating condition as shown in the table below.
Standard: 9. The CD box can not eject after inserted
(1) Check if the CD box power supply is NORMAL
a. Turn the ignition switch to ACC
b. Check the continuity between the CD box terminals under each operating condition as shown in the
table below
Standard:Audio System -Audio System Inspection5-48Tester Connection Condition Standard Status
+B - GND Nomal 10~14V
ACC - GND Ignition switch ACC or ON 10~14VTester connection Condition Standard Status
GND Nomal ON
Tester Connection Condition Standard Status
+B - GND Nomal10 ~ 14V
ACC - GND Ignition switch ACC or ON10 ~ 14VTester connection Condition Standard Status
GND Nomal ON
Step Action of operator Screen displayResult in normal conditionPump motor works
Wheel lockup
Wheel lockup
Wheels may rotate freely,
pedal rebounds, work noise
of pump motor may be heard
Wheels may rotate freely
Wheel lockup, pedal auto-
matically goes down slightlyHydraulic control unit diagnosis -- hydraulic pump testLeft front wheel -- step down brake pedal
Left front wheel -- normally open valve opens,
normally closed valve is closed, wheel lockup?
Left front wheel -- normally open valve is closed,
normally closed valve is closed, wheel lockup?
Left front wheel _ _ normally open valve is closed,
normally closed valve opens, wheels may rotate
freelyLeft front wheel _ _ normally open valve is closed,
normally closed valve is closed, wheels may rotate freelyLeft front wheel -- normally open valve opens,
normally closed valve is closed, wheel lockup?
Release brake pedal 01
02
03
04
05
06
07
08Step down brake
pedal and hold
* Perform testing of the above steps 2-8 for each wheel. Sequence is as follows: left front right front left
rear right back.
* If result of one of the above steps is different from the result in normal condition, it shows that corresponding
actuator fails to work normally, please check corresponding actuator.
* Here as long as "return " position appears on the screen, it may finish the testing via "ESC " key and returns
to function menu.VI. Troubleshooting quick index tableMK-60 ABS system - ABS Diagnosis5-100Diagnostic
codeFault description Diagnosis contentCheck
list No.Reference
page
65535
01276
00283
00285
00290
00287
01044
00668
01130Electronic control unit
ABS hydraulic pump
Left front wheel sensor
Right front wheel sensor
Left rear wheel sensor
Right rear wheel sensor
ABS coding error
Supply terminal 30
ABS works abnormallyDamaged
Motor cannot work
Electric and mechanical failure
Signal lacks of conformity5-103
5-104
5-106
5-106
5-107
5-107
5-108 1
2, 3, 4
5
6
7
Fault symptom
Flameout, poor idle speedChapter 9 Engine EFI SystemI. Outline This system includes sensor that detects engine functioning. Engine ECU utilizes sensors installed at differ-
ent parts of engine to measure various working parameters of engine, accurately control oil injection quantity
according to control procedure set in engine electronic control unit, so engine could work in optimum mode
under various operating conditions, i. e. optimal power output, the most economical oil consumption, optimal
exhaust emissions. Engine ECU is capable of start up control, idle speed closed-loop control, air fuel ratio
closed-loop control, canister control, transient operation control, angle of ignition control, knocking control, air
conditioning control, coasting fuel cutoff and overspeed fuel cutoff control, ternary catalyst heating and protec-
tion control, system self-diagnosis etc.II. Inspection of control element1. Manifold intake pressure temperature sensor
(1) The part to measure intake pressure is piezo type sensor, could provide controller with "load signal "
according to the difference between atmospheric pressure and manifold pressure; controller will supply 5V
voltage, and feed back 0-5V voltage to controller according to different intake pressures. The part to measure
intake temperature is NTC type (negative temperature coefficient) sensor, resistance changes with intake
temperature, this sensor conveys a voltage representing intake temperature change to the controller.
(2) Simple measuring method:
Temperature sensor part: (remove joint) turn digital multimeter
to Ohm position, two meter pens connect sensor 1 #, 2 # pinrespectively, rated resistance is 2. 5k ohm±5% at 20°C, correspond-ing resistance value may be measured from the above characteristic
curve. Simulation method may also be used for measurement, spe-
cific procedure is to use electric drier to blast sensor (pay attention not
to be too close), observe change of sensor resistance, here resistanceEngine EFI System-Engine EFI System5-120Possible cause
There is abnormal high voltage or reverse heavy current during useVacuum
unit is damaged during repair
Repair precautions: it is prohibit to use high pressure gas to impact vacuum unit during repair; when replace
sensor case of trouble, check whether generator output voltage and current is normal or not.1 2 3 4Manifold intake pressure temperature
sensor Intake pressure sensor feature cureIntake temperature feature curve
Output voltageAbsolute pressureTemperatureResistance
Fault symptom Possible cause
Poor speedup etc Man made fault1 2 3Throttle position sensorFault symptom Possible cause
Difficult to start Man made fault Repair precautions: pay attention to mounting position.
(2) Simple measuring method:
(Remove joint) turn digital multimeter to ohm position, connect
two meter pens with sensor 1 #, 2 # pin respectively, its resistance
value at room temperature is 2k ohm±20 %. Connect two meter pens
with 1 #, 3# pin respectively, rotate throttle, its resistance value shows
linear change with opening of throttle, while situation is reverse for
2 #, 3# pin.
Note: when observe change of resistance value, pay attention to observe whether has large leap.
3. Coolant temperature sensor
(1) This sensor is a negative temperature coefficient (NTC) thermistor, its resistance value decreases with
increase of temperature, but not a linear relationship. This thermistor is installed in a copper heat conducting sleeve.Engine EFI System-Engine EFI System5-121should drop.
Pressure sensor part: (connect joint), turn digital multimeter to DC voltage position, black meter pen is earthed,
red meter pen is connected with 3#, 4# pin respectively. In condition of idle speed, 3# pin should have reference
voltage of 5 V, 4 # pin voltage should be about 1. 3 V (specific value is related with vehicle type); in no-load
condition, open the throttle slowly, change of voltage of 4 # pin is not large; open the throttle quickly, voltage of
4 # pin may reach about 4V in no time (specific value is related with vehicle type), then it drops down to about
1. 5 V.
2. Throttle position sensor
(1) This sensor is actually corner potentiometer with linear output characteristic. Potentiometer tumbler is
mounted coaxially with throttle, when throttle rotates, it drives potentiometer tumbler to slide to certain position,
potentiometer outputs voltage signal proportional to throttle position. Mounting torque: 20 N.m(Max)
(2) Simple measuring method:
(Remove joint) turn digital multimeter to ohm position, connect two meter pens with sensor pins respectively,rated resistance at 20°C is 2.5 k ohm± 5%. Simulation method may also be used for measurement, specificprocedure is to put sensor work area into boiled water (pay attention to soak for sufficient time), observe changeof sensor resistance, now resistance should drop down to 300 ohm-400 ohm (specific value subjects to temperatureof boiled water).
Resistance value (K ohm)
No.Temperature
(°C) Temperature tolerance ±1°C Temperature tolerance ±0°C
Min. Max. Min. Max.
1 8.16 10.74 8.62 10.28 -10
2 2.27 2.73 2.37 2063 +20
3 0.290 0.354 0.299 0.345 +80