Geely Emgrand X7. Manual part - 65
Geely Emgrand X7. Manual part - 65
(d) Measure resistance between intake camshaft position sensor wire harness connector EM18
terminal A and ECM wire harness connector EM01 terminal 77. Inspect whether there is
short-circuit situation.
(e) Measure resistance between intake camshaft position sensor wire harness connector EM18
terminal A and reliable grounding.Inspect wheter there is grounding short-circuit.
(f) Measure resistance between intake camshaft position sensor wire harness connector EM18
terminal A and reliable grounding. Inspect whether there is power supply short-circuit
situation.
Test Items
Standard Value
Resistance Between EM18 (A) and EM01 (77)
Less than 1 Ω
Resistance Between EM18 (A) and Reliable Ground
10 kΩ or higher
Voltage Between EM18 (A) and Reliable Ground
0V
Are the values specified values?
Step 8
Inspect sensor ECM internal low reference circuit.
(a) Rotated ignition switch to OFF position .
(b) Disconnect the intake camshaft position sensor wiring harness connector EM18.
(c) Disconnect ECM harness connector EM01.
(d) Measure resistance between intake camshaft position sensor wire harness connector EM18
terminal B and ECM wire harness connector EM01 terminal 74. Inspect whether there is
short-circuit situation.
(e) Measure voltage value between air intake camshaft position sensor harness connector EM18
B terminal and reliable grounding, check if circuit exist condition of short-circuit of power
supply.
Test Items
Standard Value
Resistance Between EM18 (B) and EM01 (18)
Less than 1 Ω
Voltage Between EM18 (B) and Reliable Ground
0V
Execute next step as per normal.
Step 9
Inspect whether the intake camshaft signal plate is normal.
No
Repair the faulty part.
Yes
Next
No
Repair the faulty part. Go to step 12
Yes
259
Step 10
Inspect the ECM Power Supply Circuits.
(a) Inspect whether ECM power supply circuit is normal.
(b) Inspect whether ECM ground circuit is normal.
Step 11
Replace ECM
Step 12
Use scan tool to confirm whether the DTC Code is stored again.
(a) Connect the fault diagnosis tester to the diagnostic interface.
(b) Turn ignition switch to ON position.
(c) Clear DTC code.
(d) Start and run the engine at idle speed to warm up the engine for at least 5 min.
(e) Read control system DTC code again to confirm that the system has no DTC code exported.
Step 13
Troubleshooting
5. Maintenance
guide
:
Refer to2.10.7.1 Replacement of Camshaft Position Sensor to replace the intake CMP sensor.
No
Refer to 2.2.7.3 Intermittent Fault
Inspection for intermittent fault.
Yes
Next
No
Repair the faulty part.
Yes
260
2.2.7.37 DTC P0351 P0352 P0353 P0354
1. DTC
description:
DTC P0351
Cylinder 1 Ignition Circuit malfunction
DTC P0352
Cylinder 2 Ignition Circuit malfunction
DTC P0353
Cylinder 3 Ignition Circuit malfunction
DTC P0354
Cylinder 4 Ignition Circuit malfunction
Ignition coil #1 initiate the ignition for Cylinder #1; ignition coil #2 initiate the ignition for
Cylinder #2; ignition coil #3 initiate the ignition for Cylinder #3; ignition coil #4 initiate the
ignition for Cylinder #4. The ignition relay supplies power for the four ignition coils. ECM uses
the ECM harness connector EM01 terminal #4 to control Cylinder #1 ignition coil primary circuit
to be grounded; uses the terminal #1 to control Cylinder #2 ignition coil primary circuit to be
grounded; uses the terminal #62 to control Cylinder #3 ignition coil primary circuit to be grounded;
uses the terminal #81 to control Cylinder #4 ignition coil primary circuit to be grounded.
2. DTC Code Set Up and Removal Conditions:
DTC Code
DTC Detection
Strategy
Set(Control Strategy) Conditions Fault Locations
P0351
P0352
P0353
P0354
Hardware
Circuit
Inspection
Operating at idle, with the ignition
coil control end disconnected,
short to ground or short to power
supply, this DTC code will be set.
The fuel injection of the cylinder
with this DTC code will stop
leading to engine speed fluctuates.
1. Ignition
Coil
Circuit
2. Ignition
Coil
3. ECM
261
3. Circuit
figure
蓄电池
EF40
EF21
主继电器ER09
87
30
86
85
4
EM01 COILA
EM01 MPR
1
EM01 COILB
81
44
EM01 COILD
62
EM01 COILC
发
动
机
控
制
模
块
一缸点火线圈
3
1
2
二缸点火线圈
3
1
2
三缸点火线圈
3
1
2
四缸点火线圈
3
1
2
NL02-0049c
4. Diagnostic
Steps:
Refer to 2.10.6 “Diagnostic Information and Procedures” for ignition coil inspection.
5. Maintenance
guide
Refer to 2.10.7.3 “Replacement of Ignition Coil” to replace the ignition coil.
Main relay ER09
Battery
One cylinder ignition coil
Two cylindersignition
coil
Three cylindersignition coil
Four cylinderignition
coil
Engi
ne
contro
l
modu
le
262