Downloaded from www.Manualslib.com manuals search engine 6.CHECK THE O2SENSOR HEATER
• Check the resistance between O
2sensor heater terminals, component side.
TERMINAL NO. RESISTANCE
1 and 2 (including cable
and connector) Approximately 9
• Check the resistance between O
2sensor terminals, component side.
TERMINAL NO. RESISTANCE
1and3&4
(Continuity should notexist)
4and1&2
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace the O2sensor.
7.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0032 still present?
Ye s>>Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03–56Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine 2.0L ENGINE CONTROLS
GENERAL INFORMATION03-229
Description 03-229
Operation 03-229
Electronic Engine Control Input & Output
Device Failure Modes 03-230
Specifications 03-231
Special Tools 03-232
Electrical Schematics 03-234
ECM Connector Pin-Out Table 03-245
DIAGNOSIS & TESTING03-247
Diagnostic Help 03-247
Ground Inspection 03-247
Electronic Throttle Control Actuator
Self-Learning Operation Introduction 03-247
Diagnostic Tools 03-248
Diagnostic Trouble Code (DTC) List 03-250
ECM Power Supply and Ground Circuit
Test 03-254
Power Supply And Ground Circuit
Diagnostic Check 03-254
Diagnostic Trouble Code (DTC) Tests 03-261
P0016 - Camshaft Position-Crankshaft
Position Correlation Error 03-261
P0031 - O
2Sensor 1 Heater Control
Circuit Low 03-272
P0032 - O
2Sensor 1 Heater Control
Circuit High 03-277
P0102 - Mass Or Volume Air Flow
Circuit Low Input 03-282
P0103 - Mass Or Volume Air Flow
Circuit High Input 03-288
P0112 - Intake Air Temperature Circuit
Low Input 03-293
P0113 - Intake Air Temperature Circuit
High Input 03-297
P0117 - Engine Coolant Temperature
Circuit Low Input 03-301
P0118 - Engine Coolant Temperature
Circuit High Input 03-305
P0122 - Throttle Position Sensor A
Circuit Low Input 03-310
P0123 - Throttle Position Sensor A
Circuit High Input 03-316
P0132 - O
2Sensor Circuit 1 High
Voltage 03-322
P0171 - Fuel Trim System Too Lean 03-326
P0172 - Fuel Trim System Too Rich 03-336
P0201 - Cylinder 1 - Injector Circuit,
P0202 - Cylinder 2 - Injector Circuit,
P0203 - Cylinder 3 - Injector Circuit,
P0204 - Cylinder 4 - Injector Circuit 03-345
P0221 - Throttle Position Sensor B
Performance 03-352 P0261 - Cylinder 1 Injector Circuit Low,
P0264 - Cylinder 2 Injector Circuit Low,
P0267 - Cylinder 3 Injector Circuit Low,
P0270 - Cylinder 4 Injector Circuit Low 03-359
P0262 - Cylinder 1 Injector Circuit High,
P0265 - Cylinder 2 Injector Circuit High,
P0268 - Cylinder 3 Injector Circuit High,
P0271 - Cylinder 4 Injector Circuit High 03-366
P0321 - Distributor Engine Speed In
Phase Circuit Performance 03-373
P0324 - Knock Control System Error 03-378
P0343 - Camshaft Position Sensor
Circuit High Input 03-383
P0444 - Evaporative Emission System
Purge Control Valve Circuit Open 03-389
P0506 - Idle Control System RPM
Lower Than Expected 03-394
P0604 - Internal Controller Module
Random Access Memory (RAM) Error,
P0605 - Internal Controller Module
ROM Test Error, P0606 - ECM
Processor 03-396
P0602 - ECM Programming Error 03-398
P0645 - A/C Clutch Relay Circuit 03-400
P1545 - Throttle Position Control
Performance 03-405
P2138 - Pedal Position Sensor
Performance 03-413
U0001 - High Speed CAN Defective 03-420
ON-VEHICLE SERVICE03-427
Engine Coolant Temperature (ECT)
Sensor 03-427
Description 03-427
Operation 03-427
Removal & Installation 03-427
Knock Sensor 03-428
Description 03-428
Operation 03-428
Removal & Installation 03-428
Oxygen Sensor 03-428
Description 03-428
Operation 03-428
Upstream Oxygen Sensor 03-429
Downstream Oxygen Sensor 03-429
Removal & Installation - Upstream
Oxygen Sensor 03-429
Removal & Installation - Downstream
Oxygen Sensor 03-429
Crankshaft Position (CKP) Sensor 03-430
Description 03-430
Operation 03-430
Removal & Installation 03-430
03
03–227Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine ECM Connector Pin-Out Table
ECM PIN-OUT TABLE
PINCIRCUIT IDENTIFICATION PINCIRCUIT IDENTIFICATION
1 (With EOBD)
42Intake Air Temperature Sensor
Upstream Oxygen Sensor Heater (Without
EOBD)
2 Ignition Coil 2 43-
3 GND (Ignition) 44Switched Supply Voltage
4 (With EOBD)
45Switched Supply Voltage
Downstream Oxygen Sensor Heater
(Without EOBD)
5 Ignition Coil 1 46Canister Control Valve
6 Injector 2 47Injector 4
7 Injector 3 48Upstream Oxygen Sensor Heater (With
EOBD)
(Without EOBD)
8 Engine Speed Output 49-
9 Coolant Temperature Output 50Fan Relay Control
10 Fuel Consumption Output 51GND (Signal)
11 EPC Lamp 52-
12 Continuous Supply Voltage 53GND (Signal)
13 Ignition Switch 54 Electronic Throttle Control Actuator
14 EMS Relay (Main Relay) 55Downstream Oxygen Sensor
15 Crankshaft Position Sensor 56-
16 Accelerator Position Sensor 57-
17 Sensor (GND) 58Brake Switch
18 Upstream Oxygen Sensor 59-
19 Knock Sensor 1 60A/C Middle Pressure Switch
20 Knock Sensor 2 61GND (Power)
21 Brake Switch 62CAN-H
22 -63Switched Supply Voltage
23 Accelerator Sensor 64 Electronic Throttle Control Actuator
24 -65 Electronic Throttle Control Actuator
25 -66 Electronic Throttle Control Actuator
26 -67 Electronic Throttle Control Actuator
27 Injector 1 68Fan Relay Control 2
28 Downstream Oxygen Sensor Heater (With
EOBD) 69Air Compressor Relay
(Without EOBD)
29 -70Fuel Pump Relay
30 -71Diagnostic Link K
31 MIL Lamp 72-
32 Regulated Sensor Supply 3 73Regulated Sensor Supply 2
33 Regulated Sensor Supply 1 74-
34 Crankshaft Position Sensor 75A/C Stand By
GENERAL INFORMATION
03
03–245Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine Diagnostic Trouble Code (DTC) List
DTCDTC DEFINITION
P000A ACamshaft Position Slow Response
P000B BCamshaft Position Slow Response
P0010 ACamshaft Position Actuator Circuit/Open
P0011 ACamshaft Position - Timing Over - Advanced or System Performance
P0012 ACamshaft Position - Timing Over - Retarded
P0013 BCamshaft Position - Actual Circuit/Open
P0014 BCamshaft Position - Timing Over - Advanced or System Performance
P0015 BCamshaft Position - Timing Over - Retarded
P0016 Crankshaft - Camshaft Position Correlation
P0030 O
2Sensor Heater Control Circuit (Bank 1 Sensor 1)
P0031 O
2Sensor Heater Control Circuit (Bank 1 Sensor 1) Low
P0032 O
2Sensor Heater Control Circuit (Bank 1 Sensor 1) High
P0036 O
2Sensor Heater Control Circuit (Bank 1 Sensor 2)
P0037 O
2Sensor Heater Control Circuit (Bank 1 Sensor 2) Low
P0038 O
2Sensor Heater Control Circuit (Bank 1 Sensor 2) High
P0053 O
2Sensor Heater Resistance (Bank 1 Sensor 1)
P0054 O
2Sensor Heater Resistance (Bank 1 Sensor 2)
P0101 Mass or Volume Air Flow Circuit Range/Performance
P0102 Mass or Volume Air Flow Circuit Low Input
P0103 Mass or Volume Air Flow Circuit High Input
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0116 Engine Coolant Temperature Circuit Range/Performance
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0121 Throttle/Pedal Position Sensor A Circuit Range/Performance
P0122 Throttle/Pedal Position Sensor A Circuit Low Input
P0123 Throttle/Pedal Position Sensor A Circuit High Input
P0130 O
2Sensor Circuit Bank 1 - Sensor 1 Malfunction
P0131 O
2Sensor Circuit Bank 1 - Sensor 1 Low Voltage
P0132 O
2Sensor Circuit Bank 1 - Sensor 1 High Voltage
P0133 O
2Sensor Circuit Bank 1 - Sensor 1 Slow Response
P0134 O
2Sensor Circuit Bank 1 - Sensor 1 No Activity Detected
P0136 O
2Sensor Circuit Bank 1 - Sensor 2 Malfunction
P0137 O
2Sensor Circuit Bank 1 - Sensor 2 Low Voltage
P0138 O
2Sensor Circuit Bank 1 - Sensor 2 High Voltage
P0140 O
2Sensor Circuit Bank 1 - Sensor 2 No Activity Detected
P0170 Fuel Trim, Bank 1 Malfunction
P0171 Fuel Trim, Bank 1 System too Lean
P0172 Fuel Trim, Bank 1 too Rich
P0201 Cylinder 1 - Injector Circuit
P0202 Cylinder 2 - Injector Circuit
DIAGNOSIS & TESTING
03–250Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine P0031 - O2Sensor 1 Heater Control Circuit Low
DIAGNOSIS & TESTING
LTSMW030036T
03–272Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
18 Upstream oxygen sensor •
Engine is running
• Warm-up condition
• Keep the engine speed
2000 RPM Approximately 0.1 - 0.9 V
(change5-8times in 10 seconds periodically)
28 Downstream oxygen
sensor heating --
36 Sensor (GND)•
Warm-up condition
• Idle speed Approximately 0 V
48 Upstream oxygen sensor
heating --
55 Downstream oxygen
sensor •
Engine is running
• Warm-up condition
• Keep the engine speed
2000 RPM Approximately 100 mV
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
P0031 O
2sensor 1 heater control
circuit low Engine is running•
Fuel quality
• Upstream O2sensor
• Harness or connectors
• 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 and record and erase DTC.
• Start engine and warm it up to the normal operating temperature.
• Turn ignition switch off and wait at least 10 seconds.
• Start engine and keep the engine speed 2000 RPM for at least 1 minute.
• Let engine idle for 2 minutes, 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 03 Electronic Engine Controls for more information.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
03–273Chery Automobile Co., Ltd.