Chery Tiggo 5 (T21). Manual — part 91
06–
206
06
a. Remove engine speed sensor.
b. Check and clean engine speed sensor and installation area, and check for damage, foreign matter or
excessive movement, etc. that cause signal incorrectness.
a. Check resistance between engine speed sensor
terminals 1 and 2.
Normal resistance: 860 Ω ± 20% (at normal temperature)
a. Disconnect ECM connector E-035.
b. Check wire harness between engine speed sensor
connector terminals and ECM connector terminals.
Check for Open
10
Check installation of engine speed sensor
Clean or replace engine speed sensor
NG
11
Check resistance of engine speed sensor
OK
-
+
3
2
1
RT21060210
Replace engine speed sensor
NG
12
Check engine speed sensor circuit
OK
E-016
E-035
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
1 2 3
-
+
RT21065042
Multimeter
Connection
Condition
Specified
Condition
E-016 (1) - E-035
(32)
Always
Continuity
E-016 (2) - E-035
(33)
06–
207
06
Check for Short
a. Rotate crankshaft, and check crankshaft and flywheel gear ring for damage, foreign matter, etc. that cause
signal incorrectness.
a. Check for timing deviation.
Multimeter
Connection
Condition
Specified
Condition
E-016 (1) or
E-035 (32) - Body
ground
Always
No continuity
E-016 (1) or
E-035 (32) -
Battery positive
E-016 (2) or
E-035 (33) - Body
ground
E-016 (2) or
E-035 (33) -
Battery positive
Replace wire harness or connector
(engine speed sensor - ECM)
NG
13
Check crankshaft and flywheel gear ring
OK
Clear off debris and clean flywheel gear
ring. Replace flywheel if necessary (
)
NG
14
Check engine timing
OK
Correct engine timing
NG
OK
06–
208
06
a. Use X-431 3G diagnostic tester to read the ECM DTC.
b. Refer to "DTC Confirmation Procedure".
c. Check if DTC P0016-00 or P0018-00 still exists.
15
Check for DTCs
Replace ECM
NG
System is operating normally.
Reassemble vehicle and perform a road test to confirm that malfunction reported by customer has
been repaired.
OK
06–
209
06
SQR484F ENGINE MANAGEMENT SYSTEM
Engine Problem Symptom Diagnosis
Perform primary inspection first before performing malfunction diagnosis procedures:
1. Confirm that engine malfunction indicator operates normally;
2. Using diagnostic tester, check that no error messages are recorded;
3. Confirm that malfunction complained by customer is present, and confirm the condition under which the
malfunction occurs.
Then, perform appearance inspection:
1. Check fuel line for leakage;
2. Check if vacuum line is broken or twisted, and if connection is correct;
3. Check intake line for blockage, air leakage, crush or damage;
4. Check if high-voltage cable of ignition system is broken or deteriorated, and if ignition sequence is correct;
5. Check if wire harness ground points are clean and secure;
6. Check each sensor or actuator connector for looseness or poor contact.
HINT:
If above conditions exist, repair the trouble areas first. Otherwise, it will affect the repair work for the following
trouble diagnosis.
Diagnostic Help
1. Confirm that there are no trouble records for engine;
2. Confirm that complained trouble symptoms are present;
3. There are no abnormal conditions after performing the inspection according to above procedures;
4. During servicing, do not ignore vehicle maintenance condition, cylinder pressure, mechanical ignition
timing and fuel condition, etc. that can affect the system;
5. Replace ECM, and perform a test. If the trouble can be eliminated, the trouble area is in ECM; if the trouble
symptom still exists, reuse the original ECM, repeat the procedures, and perform service again.
Problem Symptoms Table
Symptom
Suspected Area
See page
Engine does not crank or cranks slowly
while starting
Battery
Starter motor
Wire harness or ignition switch
Engine mechanical
Engine cranks normally but cannot start
successfully while starting
No fuel in tank
Fuel pump
Engine speed sensor
Ignition coil
Engine mechanical
Difficult to start with hot engine
Water in fuel
Fuel pump
Coolant temperature sensor
Fuel pressure regulator
Ignition coil
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