Chery Tiggo 5 (T21). Manual - part 79

06–

158

06

a. Disconnect fuse and relay box connectors E-069 and 



E-076.

b. Disconnect ECM connector E-033.
c. Check wire harness between connector terminals.

Check for Open

Check for Short

Check for Open

Check for Short

a. Use X-431 3G diagnostic tester to read the ECM DTC.
b. Refer to "DTC Confirmation Procedure".
c. Check if DTC P0688-00 still exists.

4

Check wire harness and connector (ECM - engine compartment fuse and relay box)

E-033

E-069

F12

F24

F11

F23

F10

F22

F9

F21

F8

F20

F7

F19

F6

F18

F5

F17

F4

F16

F3

F15

F2

F14

F1

F13

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1 2 3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4 5 6 7 8 9 10 11 12 13 14

-

+

RT21065058

Multimeter Connection

Specified 

Condition

E-033 (5) - E-069 (F14)

Continuity

Multimeter Connection

Specified 

Condition

E-033 (5) or E-069 (F14) - 

Body ground

No continuity

E-033 (5) or E-069 (F14) - 

Battery positive

No continuity

E-076

E-033

A1

A2

A3

A4

A5

A6

A7

A8 A9 A10

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1 2 3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4 5 6 7 8 9 10 11 12 13 14

-

+

RT21065059

Multimeter Connection

Specified 

Condition

E-033 (15) - E-076 (A6)

Continuity

E-033 (16) - E-076 (A6)

Continuity

Multimeter Connection

Specified 

Condition

E-033 (15, 16) or E-076 (A6) - 

Body ground

No continuity

E-033 (15, 16) or E-076 (A6) - 

Battery positive

No continuity

Repair or replace wire harness or 
connector

NG

5

Check for DTCs

OK

Replace ECM

NG

06–

159

06

System is operating normally. 
Reassemble vehicle and perform a road test to confirm that malfunction reported by customer has 
been repaired.

OK

06–

160

06

DTC Confirmation Procedure

Confirm that battery voltage is over 12 V 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 to ON.
 Use X-431 3G diagnostic tester to record and clear the DTCs stored in the ECM.
 Select Read Code.
 If the 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 06-18

).

Diagnosis Procedure

a. Turn ignition switch to LOCK.
b. Check ECM grounds E-026 and E-028 (

See page 06-18

).

a. Disconnect ECM connector E-033 and E-035.
b. Check if connector is normal.

DTC

P0604-00

Internal Contr. Module Random Access Memory (RAM) 
Error

DTC

P0605-00 Internal Contr. Module ROM Test Error

DTC Code

DTC Definition

DTC Detection 

Condition

Possible Cause

P0604-00

Internal Contr. Module 
Random Access 
Memory (RAM) Error

Ignition switch ON

 Wire harness or connector
 ECM

P0605-00

Internal Contr. Module 
ROM Test Error

CAUTION

 When performing circuit diagnosis and test, always refer to the circuit diagram for specific circuit and 

component information.

1

Check ECM ground point

Repair or replace ground wire harness or 
ground point

NG

2

Check ECM connector

OK

Repair or replace connector

NG

06–

161

06

Replace ECM

OK