Chery Tiggo. Manual — part 259
3.
CHECK EVM SOLENOID VALVE RESISTANCE
• Turn ignition switch off.
• Disconnect pressure adjust solenoid valve (7) connector.
• Check EVM solenoid valve resistance as shown in the following table:
EVM SOLENOID (7) RESISTANCE BASED ON
TRANSAXLE TEMPERATURE
TEMPERATURE
RESISTANCE
23°C
36 - 44
⍀
Is the check result normal?
Yes
>>
Replace the valve with a known good one.
With X-431, perform the solenoid actuate test.
− If the solenoid can be heard, Go to step 7.
− If the solenoid can’t be heard, Go to the next step.
No
>>
Replace the damaged solenoid valve.
4.
CHECK EVM SOLENOID VALVE POWER SUPPLY
• Turn ignition switch on.
• Check power supply between EVM control solenoid
valve E-037 terminal B12 and ground in the A/T
assembly connector E-037.
• 12 V should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the open circuit or short
to ground in harness or connectors.
DIAGNOSIS & TESTING
LTSMD080029
LTSMD080062
5.
CHECK EVM SOLENOID VALVE CONTROL CIRCUIT
• Turn ignition switch off.
• Disconnect TCM connector.
• Turn ignition switch on.
• Check if voltage is present between E-037, terminal B8 and ground.
• Check the harness for short to power supply circuits.
Is the check results normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the open circuit or short to ground or short to power supply in harness or connec-
tors.
6.
CHECK EVM SIGNAL
• Connect TCM and EVM connector.
• With the engine running, move the shifter to ⬙N⬙ position, check the voltage of the EVM valve between the
TCM pin 26 and pin 19.
Is the voltage approximately 2.5 V with the engine running and the transaxle in the
ⴖNⴖ position?
Yes
>>
Go to the next step.
No
>>
Go to step 8.
7.
CHECK FLUID PRESSURE
• Connect the ATF pressure gauge.
• Drive the vehicle and monitor the transaxle main ATF distributing passage pressure.
GROUND TIME (%)
MODULATION FLUID
PRESSURE
(×100000 PA)
0
0
10
0.32
12
0.48
15
0.67
20
0.88
30
1.17
40
1.41
50
1.69
60
1.97
70
2.26
80
2.60
88
2.87
90
2.91
92
2.95
95
3
100
3
DIAGNOSIS & TESTING
08
• Verify if the EVM valve duty cycle and ATF pres-
sure ratio matches.
Does the EVM valve duty cycle and ATF pressure
ratio match?
Yes
>>
Go to the next step.
No
>>
Replace the EVM valve for a mechanical
problem or repair the transaxle internal main ATF dis-
tributing passage pressure control device.
8.
CHECK DTC
• With the X-431 scan tool, read TCM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC P0775 present?
Yes
>>
Replace the TCM.
No
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
LTSMD080057
P0795 - Torque Converter Lock Solenoid Valve (EVLU) Open Circuit Or Short To
Ground
P0795 - Torque Converter Lock Solenoid Valve (EVLU) Short To Voltage
DIAGNOSIS & TESTING
LTSMW080021T
08
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