Chery Tiggo 5 (T21). Service manual — part 54
06–
58
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 (
).
Diagnosis Procedure
a. Turn ignition switch to LOCK.
b. Check ECM grounds E-026 and E-028 (
DTC Code
DTC Definition
DTC Detection
Condition
Possible Cause
P0116-00
Engine Coolant Temp.
Circ. Range/
Performance
Ignition switch ON
Engine running
Engine coolant temperature sensor
Wire harness or connector
ECM
P0117-00
Engine Coolant Temp.
Circ. Low Input
P0118-00
Engine Coolant Temp.
Circ. High Input
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
OK
06–
59
06
a. Disconnect engine coolant temperature sensor connector
E-021.
b. Check engine coolant temperature sensor connector.
a. Turn ignition switch to ON.
b. Check voltage between engine coolant temperature
sensor terminal and body ground.
2
Check engine coolant temperature sensor connector
RT21060090
Repair or replace connector
NG
3
Check engine coolant temperature sensor power supply voltage
OK
E-021
1
2
-
+
V
RT21065021
Multimeter
Connection
Condition
Specified
Condition
E-021 (2) - Body
ground
Ignition switch ON
5 V
Go to step 5
OK
NG
06–
60
06
a. Turn ignition switch to LOCK.
b. Disconnect ECM connector E-035.
c. Check wire harness between engine coolant temperature
sensor connector terminals and ECM connector
terminals.
Check for Open
Check for Short
4
Check engine coolant temperature sensor power supply circuit
E-021
E-035
1
2
37 38 39 40 41 42 43 44 45 46
47
48
25 26 27 28 29 30 31 32 33 34
35
36
13 14 15 16 17 18 19 20 21 22
23
24
1
2
3
4
5
6
7
8
9 10
11
12
-
+
RT21065022
Multimeter
Connection
Condition
Specified
Condition
E-021 (2) - E-035
(37)
Always
Continuity
Multimeter
Connection
Condition
Specified
Condition
E-021 (2) or
E-035 (37) - Body
ground
Always
No continuity
E-021 (2) or
E-035 (37) -
Battery positive
Always
No continuity
Replace wire harness or connector
(engine coolant temperature sensor -
ECM)
NG
OK
06–
61
06
a. Check wire harness between engine coolant temperature
sensor connector terminals and ECM connector
terminals.
Check for Open
Check for Short
a. Remove engine coolant temperature sensor.
b. Check resistance of engine coolant temperature sensor.
5
Check engine coolant temperature sensor ground circuit
E-021
E-035
1
2
37 38 39 40 41 42 43 44 45 46
47
48
25 26 27 28 29 30 31 32 33 34
35
36
13 14 15 16 17 18 19 20 21 22
23
24
1
2
3
4
5
6
7
8
9 10
11
12
-
+
RT21065023
Multimeter
Connection
Condition
Specified
Condition
E-021 (1) - E-035
(20)
Always
Continuity
Multimeter
Connection
Condition
Specified
Condition
E-021 (1) or
E-035 (20) - Body
ground
Always
No continuity
E-021 (1) or
E-035 (20) -
Battery positive
Always
No continuity
Repair or replace wire harness or
connector (engine coolant temperature
sensor - ECM)
6
Check engine coolant temperature sensor
NG
OK
-
+
1
2
RT21060100
Multimeter
Connection
Specified Condition
1 - 2
Resistance is 2.5 kΩ ± 5% (20°C),
300 - 400 Ω in boiled water (value
changes with boiled water
temperature)
Replace engine coolant temperature
sensor
NG
OK
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