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Chery Tiggo. Manual - part 262

CHECK FLUID PRESSURE SENSOR POWER SUPPLY

• Stop vehicle and turn ignition switch off.
• Turn the ignition switch on.

• Check sensor power supply between sensor termi-

nal C1 and ground in the sensor electrical connec-
tor E-037.

• 5 V should exist.

Is the check result normal?

Yes

Go to the next step.

Repair or replace the open circuit or short
to ground or short to power in harness or
connectors.
If circuit is normal, replace TCM.

CHECK FLUID PRESSURE SENSOR GROUND CIRCUIT

• Turn the ignition switch off.

• Disconnect TCM connector.

• Check for harness continuity between the following terminals:

A/T ASSEMBLY

TERMINAL

TCM

CONNECTOR

TERMINAL

CONTINUITY

Yes

• Check the harness for short to power and short to ground.

Is the check result normal?

Yes

Go to the next step.

Repair or replace the open circuit or short to power or short to ground in harness connectors.

CHECK FLUID PRESSURE SENSOR SIGNAL

• Connect fluid pressure sensor connector.

• Connect TCM connector.

• Turn the ignition switch on.

• Check sensor signal voltage between sensor terminal 55 and 25 in the sensor electrical connector E-037.

• 1.4 V should exist.

Is the check result normal?

Yes

Go to step 8.

Go to the next step.

DIAGNOSIS & TESTING

LTSMD080054

CHECK FLUID PRESSURE SENSOR SIGNAL CIRCUIT

• Turn the ignition switch off.

• Disconnect TCM and sensor connector.

• Check harness continuity between fluid pressure sensor terminal C2 and TCM terminal 55.

• Check short to ground and short to power supply.

Is the check result normal?

Yes

Go to the next step.

Check harness for an open or short to ground or short to power supply in harness or connectors.

CHECK THE FLUID PRESSURE SENSOR

• Check fluid pressure sensor resistance between sensor terminal C2 and C3 in A/T assembly connector E-037.

• Approximately 20 K⍀ should exist.

Is the check result normal?

Yes

Go to the next step.

Replace the fluid pressure sensor.

CHECK DTC

• With the X-431 scan tool, read TCM DTCs.

• Refer to ⬙DTC Confirmation Procedure⬙.

Is DTC P0840 present?

Yes

The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.

Replace the TCM.

DIAGNOSIS & TESTING

P1928 - Shift Lock Solenoid Valve Circuit Shorted To Voltage

DIAGNOSIS & TESTING

LTSMW080013T

On Board Diagnostic Logic
• Self-diagnosis detection logic.

DTC NO.

DTC

DEFINITION

DTC

DETECTION

CONDITION

DTC SET CONDITION

POSSIBLE

CAUSES

P1928

Shift lock

solenoid circuit

short to power

supply

Ignition on or

vehicle is driving

The Transaxle Control Module (TCM)
will set this DTC when the TCM
detects that the shift lever lock
solenoid circuit shorted to power

supply.

• Shift lock
solenoid valve

• Harness or
connectors (The
sensor circuit is
shorted)

• Transaxle
Control Module
(TCM)

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.

• Try to operate the shifter selector.

• 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).

• If using the appropriate diagnostic test tool, you can diagnose the TCM harness while the TCM is still con-

nected.

• Using the appropriate diagnostic test tool in this way will help prevent electrical connector terminal damage.

NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.

Diagnostic Procedure

CHECK SHIFT LOCK SOLENOID VALVE SIGNAL

• With the scan tool, select view DTC and data stream.

• Start the engine.

• Monitor the value of the gear position as indicated in the following table while driving:

SELECT

POSITION

RANGE

SHIFT

SOLENOID

VALVE 1

SHIFT

SOLENOID

VALVE 2

SHIFT

SOLENOID

VALVE 3

SHIFT

SOLENOID

VALVE 4

DIAGNOSIS & TESTING

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