relay CHERY TIGGO 2009 Service Owner's Guide

Downloaded from www.Manualslib.com manuals search engine 3.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors C-103, E-103, terminal 14
Front fuse and relay box connector A
Fuse 17
• Check harness for open or short between ECM and fuse.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace malfunctioning part.
4.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten one ground screw on the body.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace ground connections.
5.CHECK ECM GROUND CIRCUIT FOR AN OPEN OR SHORT
• Disconnect ECM harness connector.
• Check harness continuity between ECM terminals 3, 51, 53, 61, 80 and ground.
• Continuity should exist.
• Check harness for short to power.
Is the check result normal?
Ye s>>Go to step 7.
No
>>Go to the next step.
6.DETECT MALFUNCTIONING PART
• Check harness for open or short between ECM terminals 3, 51, 53, 61, 80 and ground.
• Check harness for an open or short to power in harness or connectors.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the circuit for an open or short to power in harness or connectors.
DIAGNOSIS & TESTING
03–258Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 7.CHECK ECM POWER SUPPLY CIRCUIT - (2)
• Turn ignition switch on and then off.
• Check voltage between ECM terminals 44, 45, 63
and ground.
• Voltage: Turn the ignition

switch on and battery
voltage should exist. Turning the ignition switch


OFF, battery voltage will exist for a few seconds,
then drop to approximately 0 V.
Is the check result normal?
Ye s>>Check the starting system.
No
>>Go to the next step.
8.CHECK THE STARTER RELAY CONTROL CIRCUIT
• Turn ignition switch OFF. Wait for at least 10 sec-
onds.
• Check voltage between ECM terminal 14 and


ground.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Go to step 10.
9.CHECK ECM POWER SUPPLY CIRCUIT - (3)
• Disconnect ECM harness connector.
• Disconnect front fuse and relay box harness connector F.
• Check harness continuity between ECM terminals 44, 45, 63 and front fuse and relay box terminal F3.
• Continuity should exist.
• Check harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to step 12.
No
>>Repair circuit for an open or short to power or short to ground in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030062
LTSMD030063
03
03–259Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 10.CHECK STARTER RELAY CONTROL CIRCUIT
• Disconnect ECM harness connector.
• Disconnect front fuse and relay box harness connector A.
• Check harness continuity between ECM terminal 14 and front fuse and relay box terminal A1.
• Check harness continuity between front fuse and relay box terminal G2 and G5.
• Continuity should exist.
• Also check harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to ground or short to power in harness or connectors.
11 .CHECK FUSE
• Disconnect fuse 23 (10A), fuse 24 (5A) in front fuse and relay box.
• Check fuses.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace fuse 23 or 24.
12.CHECK FRONT FUSE AND RELAY BOX
• Check the front fuse and relay box for damage.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace front fuse and relay box.
13.REPLACE AND PROGRAM ECM
• Replace the ECM.
NOTE :
The Immobilizer control module must be matched to the new ECM (See ECM Removal & Installation in Section 03
Electronic Engine Controls).
DIAGNOSIS & TESTING
03–260Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Front fuse and relay box F3
Fuse 22, Fuse 12
Check harness for open or short between CMP sensor and fuse.
• With the X-431 scan tool, read ECM DTCs.
Is DTC P0016 still present?
Ye s>>Go to the next step.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
5.CHECK CMP SENSOR GROUND CIRCUIT FOR AN OPEN AND SHORT
• Turn ignition switch off.
• Check harness continuity between CMP sensor terminal 1 and ground.
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open or short to power in harness or connectors.
6.CHECK CMP SENSOR INPUT SIGNAL CIRCUIT FOR AN OPEN AND SHORT
• Turn ignition switch on.
• Check voltage between CMP sensor terminal 2 and ground.
• 11 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open or short to power or short to ground in harness or connectors.
If circuit is normal, go to the next step.
DIAGNOSIS & TESTING
03
03–265Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Front fuse and relay box H2, H5
Fuse 25, fuse 12, fuse 23, fuse 24
• Check harness for an open or short between O
2sensor and fuse.
• Repair or replace malfunctioning part.
• With the X-431, select view DTC.
Is DTC P0031 still present?
Ye s>>Go to the next step.
No
>>The system is normal now.
5.CHECK O2SENSOR HEATER CONTROL CIRCUIT FOR OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM connector.
• Check harness continuity between ECM terminal and O
2sensor terminal.
COMPONENT ECMUPSTREAM O2SENSOR
TERMINAL •
48 (With EOBD)
• 1 (Without EOBD) 1
• Continuity should exist.
• Check harness for short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair the circuit for an open or short in harness or connectors.
6.CHECK O2SENSOR HEATER
• Check resistance between O
2sensor heater terminals.
TERMINAL NO. RESISTANCE
1 and 2 (including cable
and connector) Approximately 9

DIAGNOSIS & TESTING
03
03–275Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Front fuse and relay box H2, H5
Fuse 25, Fuse 12, Fuse 23, Fuse 24
• Check harness for open or short between O
2sensor and fuse.
• Repair or replace malfunctioning part.
• With the X-431, select view DTC.
Is DTC P0032 still present?
Ye s>>Go to the next step.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
5.CHECK O2SENSOR HEATER CONTROL CIRCUIT FOR A SHORT
• Turn ignition switch off.
• Disconnect ECM connector.
• Check harness continuity between ECM terminal and O
2sensor terminal.
COMPONENT ECMUPSTREAM O2SENSOR
TERMINAL •
48 (With EOBD)
• 1 (Without EOBD) 1
• Continuity should exist.
• Check harness short to power supply circuit.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for a short to power in harness or connectors.
6.CHECK THE O2SENSOR HEATER
• Check resistance between O
2sensor heater terminals.
TERMINAL NO. RESISTANCE
1 & 2 (including
cable and connector) Approximately 9

DIAGNOSIS & TESTING
03–280Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 5.DETECT MALFUNCTIONING PART
• Check the following parts:
Relay
Fuse 23, fuse 24, fuse 12
Harness connectors A-102, E-105
• Check harness for an open or short between MAF sensor and fuse.
• Repair an open circuit or short to ground in harness or connectors.
• With the X-431, view DTC in ECM.
Is DTC P0102 present?
Ye s>>Go to the next step.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
6.CHECK MAF SENSOR REFERENCE VOLTAGE
• Check voltage between MAF sensor terminal 4 and
ground in the MAF sensor electrical connector
E-009.
• 5 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair the circuit for an open or short to
ground in harness or connectors.
If circuit is normal, replace the ECM.
NOTE : The Immobilizer control module
must be matched to the new ECM
(See ECM Removal & Installation in Section 03 Electronic Engine Controls).
7.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between MAF sensor terminal 3 and ECM terminal 17.
• Continuity should exist.
• Check harness for short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace open circuit or short to ground in harness or connectors.
8.CHECK THE MAF SENSOR OUTPUT SIGNAL CIRCUIT FOR AN OPEN OR SHORT
• Check harness continuity between MAF sensor terminal 5 and ECM terminal 37.
• Continuity should exist.
• Check harness for a short to ground or power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open or short to ground in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030042
03
03–285Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK INJECTOR POWER SUPPLY CIRCUIT FOR OPEN
• Turn ignition switch on.
• Check injector supply voltage between sensor ter-
minal and ground in the electrical connector.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
7.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Front fuse and relay box F3
Fuse 12, fuse 23, fuse 24
Check harness for an open or short to ground between injector and fuse.
Is the check result normal?
Ye s>>With the X-431, check the system, If OK, go to the next step.
No
>>Repair or replace malfunctioning part.
8.CHECK INJECTOR CONTROL CIRCUITS FOR AN OPEN
• Check injector control circuit voltage.
• 3.6 V should exist.
Is the check result normal?
Ye s>>Go to step 10.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD030024
03
03–349Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK INJECTOR POWER SUPPLY CIRCUIT FOR AN OPEN
• Turn ignition switch on.
• Check injector supply voltage between sensor ter-
minal and ground in the electrical connector.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
7.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Front fuse and relay box F3
Fuse 12, fuse 23, fuse 24
Harness for shorted between injector and fuse
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair malfunctioning part.
8.CHECK INJECTOR CONTROL CIRCUITS FOR A SHORT
• Check injector control circuit voltage.
• 3.6 V should exist.
Is the check result normal?
Ye s>>Go to step 10.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD030024
03
03–363Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK INJECTOR POWER SUPPLY CIRCUIT FOR SHORTED
• Turn ignition switch on.
• Check injector supply voltage between sensor ter-
minal and ground in the electrical connector.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
7.DETECT MALFUNCTIONING PART
• Check the following:
Harness connectors A-102, E-105
Front fuse and relay box F3
Fuse 12, fuse 23, fuse 24
Harness for an open or short between injector and fuse
Is the check result normal?
Ye s>>With the X-431, check the system, If OK, go to the next step.
No
>>Repair malfunctioning part.
8.CHECK INJECTOR CONTROL CIRCUITS FOR A SHORT
• Check injector control circuit voltage.
• 3.6 V should exist.
Is the check result normal?
Ye s>>Go to step 10.
No
>>Go to the next step.
9.DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check if the injector control circuits short to power supply circuits.
• Check the following.
• Voltage should not exist.
INJECTOR NO. POWER SUPPLY CIRCUIT INJECTOR TERMINAL
1
Power supply circuit 2
2 2
3 2
4 2
DIAGNOSIS & TESTING
LTSMD030024
03–370Chery Automobile Co., Ltd.