Page 678 of 1903

Downloaded from www.Manualslib.com manuals search engine P0506 - Idle Control System RPM Lower Than Expected
On Board Diagnostic Logic
•Self-diagnosis detection logic.
• If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0506 Idle control system
RPM lower than expected •
Engine is running
• With the engine
idling in drive, the
brake applied,
engine run time
below a calibrated
minimum value, and
no VSS, MAF/MAP,
ECT, TPS, ETC,
Crankshaft Position
sensor, fuel system,
or injector DTCs
present. ECM detected that
the idle speed is less than the
acceptable range. •
Electronic throttle
control actuator
• Intake air leak
• ECM
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Turn ignition switch off.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on.
• With the scan tool, record and erase stored DTCs in the ECM.
• Start engine and warm it up to the normal operating temperature then select view DTC.
• If DTC is detected, go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnosis & Testing Diagnostic Help in Sec-
tion 03 Electronic Engine Controls).
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03–394Chery Automobile Co., Ltd.
Page 717 of 1903

Downloaded from www.Manualslib.com manuals search engine Operation
Set Operation
•Press CRUISE combination switch (ON/OFF switch). The CRUISE indicator in instrument cluster illuminates.
• When vehicle speed reaches a desired speed between approximately 25 km/h and 130 km/h, press SET
switch.
Speed Operation
• If the vehicle speed has been increased by during cruise control driving, the SET switch is pressed and then
Speed Control System will keep the new set speed.
• If the RESUME/ACC switch is pressed (less than 0.5 seconds) during cruise control operation, the cruising
speed is higher than the original speed of 2 km/h.
• If the DEC switch is pressed (less than 0.5 seconds) during cruise control operation, the cruising speed is less
than the original speed of 2 km/h.
Cancel Operation
• When any of following conditions exist, cruise operation will be canceled.
OFF switch is pressed
Brake pedal is depressed
If any malfunction occurs in Speed Control System, it automatically deactivates control.
ON-VEHICLE SERVICE
03
03–433Chery Automobile Co., Ltd.
Page 726 of 1903

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
The Engine Control Module (ECM) consists of a microcomputer and connectors for signal input and output and for
power supply. The ECM controls the engine.
The following are the input and output components monitored by the ECM. The monitored functions include compo-
nents from the engine, ignition, transaxle, air conditioning, or any other ECM supported subsystem.
ECM Inputs
•Brake Switch Sensor
• Camshaft Position (CMP) Sensor
• Crankshaft Position (CKP) Sensor
• Engine Coolant Temperature (ECT) Sensor
• Air Flow Sensor
• Coolant Temperature Sensor (For Instrument Cluster)
• Throttle Position Sensor (Integral with Electronic Throttle Control Actuator)
• Power Steering Switch
• Knock Sensor
• Oxygen Sensor (Upstream & Downstream)
• Clutch Pedal Switch (Manual transmission only)
ECM Outputs
• Canister Control Valve
• Fuel Injectors
• Fuel Pump Relay
• Electronic Throttle Control Actuator
• Ignition Coil
• A/C Compressor
• Cooling Fan
• Oxygen Sensor heating coil (Upstream & Downstream)
Operation
The ECM monitors components and circuits and tests them in various ways depending on the hardware, function,
and type of signal. For example, analog inputs such as throttle position or engine coolant temperature are typically
checked for opens, shorts and out-of-range values. This type of monitoring is carried out continuously. Some digital
inputs like vehicle speed or crankshaft position rely on rationality checks - checking to see if the input value makes
sense at the current engine operating conditions. These types of tests may require monitoring several components
and can only be carried out under appropriate test conditions.
The ECM is a pre-programmed, microprocessor-based digital computer. It regulates ignition timing, air-fuel ratio,
emission control devices, charging system, certain transmission features, speed control, air conditioning compressor
clutch engagement and idle speed. The ECM can adapt its programming to meet changing operating conditions.
03–442Chery Automobile Co., Ltd.
Page 839 of 1903
Downloaded from www.Manualslib.com manuals search engine 9.CHECK FOR BRAKE SYSTEM CONCERNS
• Check the operation of the brakes.
Is a fault indicated?
Ye s>>Repair as necessary.
No
>>Go to the next step.
10.ADDITIONAL CHECKS
• Check the following for possible additional causes:
Customer driving habits (such as excessive loads or over RPM limiting functions enabled).
Clutch.
Charging system.
Ignition base timing (if not previously checked).
• If the base timing is not correct, align the engine timing belt (See Engine Timing Belt Removal & Installation in
02 Engine).
Are all checks OK?
Ye s>>See Diagnostic Help for additional information.
No
>>Repair as necessary.
Verify the symptom no longer exists.
ELECTRONIC ENGINE CONTROLS - 2.4L ENGINE SYMPTOM DIAGNOSIS
03
03–555Chery Automobile Co., Ltd.
Page 948 of 1903
Downloaded from www.Manualslib.com manuals search engine DP0 Transaxle Internal View
1 - Torque Converter
2 - Fluid Pump Assembly
3 - Input Shaft
4 - Secondary Differential Driven Gear
5 - Differential Ring Gear
6 - Differential Case
7 - Parking Gear
8 - Primary Differential Driven Gear
9 - Transfer Shaft
10 - Brake F3 (1st and 2nd Gear)
11 - Brake F2 (Reverse Gear)12 - Brake F1 (4th Gear)
13 - Fluid Line
14 - Clutch E2 (2nd, 3rd and 4th Gear)
15 - Clutch E1 (Reverse and 1st Gear)
16 - Accumulator
17 - Manual Valve
18 - Accumulator
19 - Ratchet Gear Plate
20 - Accumulator Cover
21 - Planet Gear
22 - Primary Differential Drive Gear
GENERAL INFORMATION
BESM080056
08
08–5Chery Automobile Co., Ltd.
Page 961 of 1903

Downloaded from www.Manualslib.com manuals search engine DP0 Transaxle Control Module (TCM) Connector Pin-Out Table
TCM Pin-Out Table
PINCIRCUIT IDENTIFICATION PINCIRCUIT IDENTIFICATION
1 + EVS 29-
2 Flow Control Solenoid Valve (+) 30-
3 -31Shift 2
4 -32Shift 3
5 -33Shift 4
6 -34P/N Switch
7 Shift Solenoid Valve 3 35-
8 Shift Solenoid Valve 4 36Sequential (-)
9 Shift Solenoid Valve 2 37Sequential (+)
10 Shift Solenoid Valve 1 38CAN-H
11 Shift Lock 39CAN-L
12 Fluid Cooler Flow Control 40Winter Mode
13 Shift Solenoid Valve 5 41-
14 Shift Solenoid Valve 6 42MFS Switch
15 -43Brake Switch
16 Brake Switch 44-
17 -45Turbine Shaft (+)
18 -46Turbine Shaft (-)
19 CDE EVM PTG 47Secondary Shaft (-)
20 Torque Converter Lock Solenoid Valve
(CDE EVM PRSN) 48
Secondary Shaft (+)
21 -49 -
22 -50 -
23 -51 -
24 Regulated Sensor Supply 52-
25 Sensor (GND) 53Fluid Temperature Sensor (-)
26 Pressure Adjust Solenoid Valve (+EVM) 54 Fluid Temperature Sensor (+)
27 Ignition Switch 55Fluid Pressure Sensor
28 GND 56BATT
GENERAL INFORMATION
08–18Chery Automobile Co., Ltd.
Page 994 of 1903

Downloaded from www.Manualslib.com manuals search engine Operating Components Condition
•Related Operating Components
RELATED OPERATING COMPONENT
GEARSHIFT LEVER
POSITION GEAR
RATIO ENGINE
START PARKING
MECHANISM DRIVE
LOCK
2, 3, 4
GEAR
CLUTCH (E2) REVERSE
AND 1-3 GEAR
CLUTCH (E1) 4 GEAR
BRAKE (F1) REVERSE
GEAR
BRAKE (F2) 1, 2
GEAR
BRAKE (F3)
P Parking - Enabled - -- -
R Reverse
Gear -2.45 -
-- - -
N Neutral
Gear - Enabled -
- -- -
D Gear 1 2.75 -
-- --
Gear 2 1.5 - -----
Gear 3 1.000 - -- -- -
Gear 4 0.71 - --- --
Operating components
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0730 Ratio of transaxle
error Vehicle is driving The Transaxle
Control Module
(TCM) detects that a
Gear Ratio Error is
already present. The
DTC is set if the
fault happened
within seconds of a
shift. •
Input shaft speed
sensor
• Output shaft speed
sensor
• The retainer of
deceleration clutch
• Transfer case
driven and drive gear
• 2, 3, 4 gear clutch
(E2)
• Reverse and1-3
gear clutch (E1)
• 4 gear brake (F1)
• Reverse gear
brake (F2)
• 1, 2 gear brake
(F3)
• Noise interference
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on, with the scan tool, view and erase stored DTCs in the TCM.
• Start the engine and warm it to normal operating temperature.
• With the scan tool, select view DTC and data stream.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 08 Transaxle & Transfer Case for more information).
DIAGNOSIS & TESTING
08
08–51Chery Automobile Co., Ltd.
Page 997 of 1903

Downloaded from www.Manualslib.com manuals search engine 4.COMPRESSED AIR TEST
• Check low speed clutch system: Low speed clutch piston should be active and maintain pressure when com-
pressed air is applied to the fluid hole.
• Check reverse/low brake clutch system: Low speed clutch piston should be active and maintain pressure when
compressed air is applied to the fluid hole.
Is the check result normal?
Ye s>>Go to the next step for disc or plate abrasion.
No
>>Replace the damaged components as needed.
5.CHECK CLUTCH SYSTEM
• Check low speed clutch system:
2, 3, 4 gear clutch (E2)
Reverse and1-3gear clutch (E1)
Check clutch plate
Check clutch disc
Snap ring
Clutch reaction disc
D-Ring
Spring retainer
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the damaged components.
6.CHECK BRAKE SYSTEM
• Check reverse/low brake system:
4 gear brake (F1)
Reverse gear brake (F2)
1, 2 gear brake (F3)
Check brake plate
Check brake disc
Central support
Snap ring
Spring retainer
Brake piston
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the damaged components.
DIAGNOSIS & TESTING
08–54Chery Automobile Co., Ltd.