Chery Tiggo. Manual — part 124

10.

CHECK DTC

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

• See DTC Confirmation Procedure.

Is DTC P1545 still present?

Yes

>>

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

P2138 - Pedal Position Sensor Performance

DIAGNOSIS & TESTING

LTSMW030045T

DIAGNOSIS & TESTING

LTSMW030044T

03

Check reference values between ECM terminals and ground under the following conditions:

ECM TERMINAL

NO.

ITEM

CONDITION

DATA (DC

VOLTAGE)

32

Regulated sensor

supply 2

Ignition switch: ON

-

Approximately 5 V

33

Regulated sensor

supply 1

-

Approximately 5 V

16

Accelerator Pedal
Position Sensor 1

(APPS1)

• Engine stopped

• Accelerator pedal:
Fully released

0.72 - 0.74 V

• Engine stopped

• Accelerator pedal:
Fully depressed

3.95 V

40

Accelerator Pedal
Position Sensor 2

(APPS2)

• Engine stopped

• Accelerator pedal:
Fully released

0.36 - 0.37 V

• Engine stopped

• Accelerator pedal:
Fully depressed

1.97 V

35

Sensor (GND)

-

Approximately 0 V

36

Sensor (GND)

-

Approximately 0 V

73

Regulated sensor

supply 1

-

Approximately 5 V

On Board Diagnostic Logic
• Self-diagnosis detection logic.

DTC NO.

DTC DEFINITION

DTC DETECTION

CONDITION

DTC SET

CONDITION

POSSIBLE CAUSE

P2138

Accelerator pedal
position sensor
performance

Ignition switch on or

after engine start

Rationally incorrect
voltage is sent to
ECM compared with
the signals from
APPS1 and APPS2.

• Accelerator pedal
position sensor 1
and 2

• Harness or
connectors

• Electronic throttle
control actuator
(TPS1 and TPS2)

• 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.

• With the scan tool, record and erase stored DTCs in the ECM.

• Start engine then 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