Chery Tiggo 5 (T21). Manual - part 178

15–

47

15

Check for Short

a. Remove the engine switch (

See page 15-69

).

b. Check the engine switch (

See page 15-70

).

a. Connect related wire harness connectors.
b. Connect the negative battery cable.
c. Turn ignition switch ON.
d. Connect X-431 3G diagnostic tester to Data Link Connector (DLC) to check if any DTC is detected.

Multimeter 

Connection

Condition

Specified 

Condition

I-004 (11) or I-013 

(5) - Body ground/

Battery positive

Always

No continuity

I-004 (4) or I-013 

(3) - Body ground/

Battery positive

Always

No continuity

I-004 (9) or I-013 

(2) - Body ground/

Battery positive

Always

No continuity

Repair or replace instrument panel wire 
harness

NG

6

Check engine switch

OK

Repair or replace engine switch

NG

7

Confirm DTCs

OK

Repair or replace PEPS controller

NG

OK

System operates normally

15–

48

15

DTC

B1509-00 Abnormality in Brake Signal No Subtype Information

ET21140090

CVT

PEPS (J1)

I-029

J101

J102

J103

J104

J105

J106

J107

J108

J109

J110

J111

J112

J113

J114

J115

J116

Gr

I-029

RB

RB

J112

3

16

B-059

I-035

BRAKE SWITCH

B-052

18 17 16 15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

W

I-035

1

2

3

4

Lg

B-052

15–

49

15

DTC Confirmation Procedure

Confirm that battery voltage is normal before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC).
 Turn ignition switch ON.
 Use X-431 3G diagnostic tester to record and clear the DTCs stored in the PEPS system.
 Turn ignition switch to LOCK and wait for a few seconds.
 Use X-431 3G diagnostic tester to select "Read Code".
 If DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis procedure - Step 1.
 If DTC is not detected, the malfunction indicated by the DTC is intermittent (

See page 15-19

).

Diagnosis Procedure

a. Turn off all the electrical equipment and ignition switch.
b. Disconnect the negative battery cable.
c. Disconnect the brake switch connector B-052 and PEPS controller connector I-029.
d. Disconnect the instrument panel wire harness connector I-035 and body wire harness connector B-059.
e. Check if wire harnesses are worn, pierced, pinched or partially broken.
f. Look for broken, bent, protruded or corroded terminals.
g. Check that the related connector pins are in good condition.

DTC Code

DTC Definition

DTC Detection 

Condition

Possible Cause

B1509-00

Abnormality in Brake 
Signal No Subtype 
Information

Engine switch ON

 Wire harness or connector damaged
 Brake switch assembly
 Passive Entry & Passive Start (PEPS) 

controller

CAUTION

 When performing electrical equipment diagnosis and test, always refer to the circuit diagram for related 

circuit and component information.

1

Check wire harness and connector

Repair or replace related wire harness and 
connector

NG

OK

15–

50

15

Check for Open

Check for Short

Check for Open

Check for Short

2

Check body wire harness

-

+

RT21150370

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18

B-059

1

2

3

4

B-052

Multimeter 

Connection

Condition

Specified 

Condition

B-052 (3) - B-059 

(16)

Always

Continuity

Multimeter 

Connection

Condition

Specified 

Condition

B-052 (3) or 

B-059 (16) - Body 

ground

Always

No continuity

B-052 (3) or 
B-059 (16) - 

Battery positive

Always

No continuity

Repair or replace body wire harness

NG

3

Check instrument panel wire harness

OK

-

+

RT21150380

J101

J102

J103

J104

J105

J106

J107

J108

J109

J110

J111

J112

J113

J114

J115

J116

I-029

18 17 16 15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

I-035

Multimeter 

Connection

Condition

Specified 

Condition

I-029 (J112) - 

I-035 (16)

Always

Continuity

Multimeter 

Connection

Condition

Specified 

Condition

I-029 (J112) or 

I-035 (16) - Body 

ground

Always

No continuity

I-029 (J112) or 

I-035 (16) - 

Battery positive

Always

No continuity

Repair or replace instrument panel wire 
harness

NG

OK