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Chery Tiggo. Manual - part 279

Diagnostic Procedure

CHECK A/T OUTPUT SIGNAL

• With the scan tool, select view DTC and data stream for A/T.

• Vehicle start and read out the value of ⬙OUTPUT SPEED SENSOR⬙.

ITEM

CONDITION

DISPLAY

VALUE

Output speed

sensor

During driving

Approximately

matches the

speedometer

reading.

Is the check result normal?

Yes

The condition that caused this DTC is intermittent (See Diagnostic Help in Section 08 Transaxle &

Transfer Case).

Go to the next step.

CHECK OUTPUT SHAFT SPEED SENSOR POWER SUPPLY

• Stop vehicle and turn ignition switch off.

• Disconnect output shaft speed sensor connector.

• Turn ignition switch on.
• Check sensor power supply between sensor termi-

nal 3 and ground in the sensor electrical connector
E-089.

• Voltage should be more than 12 V.

Is the check result normal?

Yes

Go to step 4.

Go to the next step.

DIAGNOSIS & TESTING

LTSMD080006

DETECT MALFUNCTIONING PART

• Check the following:

− Harness connectors A-102, E-105
− Body fuse and relay box H13
− Fuse 3 (10A)
− Harness for an open or short between output shaft speed sensor and fuse

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.

CHECK OUTPUT SHAFT SPEED SENSOR SIGNAL CIRCUIT

• Check sensor signal circuit between sensor terminal 2 and ground in the sensor electrical connector E-088.

• 5 V should exist.

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.

CHECK OUTPUT SHAFT SPEED SENSOR GROUND CIRCUIT

• Turn ignition switch off.

• Disconnect TCM connector.

• Check for harness continuity between the following terminals:

OUTPUT

SPEED

SENSOR

CONNECTOR

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 circuit for an open or short to power or short to ground.

DIAGNOSIS & TESTING

LTSMD080061

CHECK OUTPUT SHAFT SPEED SENSOR SIGNAL

• Connect TCM and sensor connector.

• Start the vehicle and perform the following:

− Engine: 2000 RPM
− Vehicle: 50 km/h
− Gear: 3

• Check sensor signal between sensor terminal 2 and ground in the sensor electrical connector E-089 with X-431

or oscilloscope.

• Make sure the wave shape is normal and signal voltage is fluctuating from 0-5 V.

Is the check result normal?

Yes

Go to step 9.

Go to the next step.

CHECK OUTPUT SHAFT SPEED SENSOR

• Perform the following:

− Loose the bolt of the sensor.
− Remove the sensor.
− Visually inspect the sensor for missing or chipped teeth.

TERMINAL NO.

RESISTANCE

⍀ (25°C)

1 - 2

Except 0 or

⬁

1 - 3

2 - 3

Is the check result normal?

Yes

Replace the output speed sensor with a known good one.
Monitor the output speed sensor signal on the X-431 or oscilloscope.
− If the output speed sensor signals were normal, the system is OK.
− If the output speed sensor signals were still irregular or missing, go to step 8.

Replace output speed sensor.

CHECK TRANSFER CASE DRIVEN GEAR AND DRIVE GEAR

• Disassemble and repair the A/T and replace or repair the transfer case driven gear and drive gear.

• Check for a chipped and damaged signal gear of the transfer case driven and drive gear.

Is the check result normal?

Yes

Go to the next step.

Replace or repair the transfer case driven gear and drive gear.
Monitor the output speed sensor signal on the X-431 or oscilloscope.
If the signal pulse is not normal, repair the noise interference.

DIAGNOSIS & TESTING

CHECK DTC

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

• Refer to ⬙DTC Confirmation Procedure⬙.

Is DTC 23 still present?

Yes

Replace the TCM.

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

DIAGNOSIS & TESTING

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