DTC P0351-P0354 (LUJ)
Diagnostic Instructions
DTC Descriptors
| DTC P0351 00: Ignition Coil 1 Control
Circuit |
| DTC P0352 00: Ignition Coil 2 Control
Circuit |
| DTC P0353 00: Ignition Coil 3 Control
Circuit |
| DTC P0354 00: Ignition Coil 4 Control
Circuit |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Ignition Voltage
|
1
|
2
|
-
|
-
|
Ignition Coil 1 Control Circuit
|
P0300 00, P0351 00
|
P0300 00, P0351 00
|
P0300 00, P0351 00
|
-
|
Ignition Coil 2 Control Circuit
|
P0300 00, P0352 00
|
P0300 00, P0352 00
|
P0300 00, P0352 00
|
-
|
Ignition Coil 3 Control Circuit
|
P0300 00, P0353 00
|
P0300 00, P0353 00
|
P0300 00, P0353 00
|
-
|
Ignition Coil 4 Control Circuit
|
P0300 00, P0354 00
|
P0300 00, P0354 00
|
P0300 00, P0354 00
|
-
|
1. The engine cranks but does not run and opens the fuse F9 that
supplies voltage to the ignition coil.
2. The engine cranks but does not run.
|
|
| |
Circuit/System Description
Ignition voltage is supplied to the ignition coil. The engine
control module (ECM) provides a ground for the ignition coil
control circuits. When the ECM removes the ground path of the
ignition primary coil, the magnetic field produced by the coil
collapses. The collapsing magnetic field produces a voltage in the
secondary coil which ignites the spark plugs. The sequencing and
timing are controlled by the ECM.
Conditions for Running the DTC
| • |
The ignition voltage is
greater than 6 V. |
| • |
The DTC runs continuously once
the above condition is met. |
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the
actual state of the control circuit do not match for greater than 5
s.
Action Taken When the DTC Sets
DTCs P0351 00, P0352 00, P0353 00 and P0354 00 are Type B
DTCs.
Conditions for Clearing the DTC
DTCs P0351 00, P0352 00, P0353 00 and P0354 00 are Type B
DTCs.
Diagnostic Aids
The following conditions can also set the DTC:
| • |
Inspect the ignition coils for
aftermarket devices. An aftermarket device connected to the
ignition coil circuits, may cause this DTC to set. |
| • |
The MIL indicator flashes when
there is an engine misfire. |
| • |
If the condition is
intermittent, moving the related harnesses and connectors, with the
engine operating, while monitoring the appropriate scan tool
Misfire Current Cylinder parameter may help to isolate the
condition. |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Electronic Ignition System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| 1. |
Start and idle the
engine. |
| 2. |
Observe the scan tool Cylinder
1 Current Misfire Counter, Cylinder 2 Current Misfire Counter,
Cylinder 3 Current Misfire Counter and Cylinder 4 Current Misfire
Counter parameters. The counters should not be incrementing.
|
| 3. |
Operate the vehicle within the
conditions for running the DTC to verify the DTC does not reset.
You may also operate the vehicle within the conditions that you
observed from the freeze frame/failure records data. |
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the T8 Ignition Coil. |
| 2. |
Test for less than 5 Ω
between the ground circuit terminal B and ground. |
| ⇒ |
If greater than the specified range, repair the
ground circuit for an open/high resistance. |
| 3. |
Ignition OFF for 1 min, test
for less than 5 Ω between the low reference circuit terminal
C and earth. |
| ⇒ |
If greater than the specified range, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K20 Engine Control Module. |
| 4. |
Ignition ON, verify that a
test lamp illuminates between the ignition voltage circuit terminal
A and ground. |
| ⇒ |
If the test lamp does not illuminate, test the
ignition voltage circuit for a short to ground or an open/high
resistance. If the circuit tests normal and the ignition voltage
circuit fuse F9 is open, test all components connected to the
ignition voltage circuit and replace as necessary. |
|
Note: Set the DMM to
the DC Hertz scale for this test.
|
| 5. |
Connect a DMM between the
appropriate ignition control circuit listed below and
ground. |
| |
• |
Ignition coil 1 control
terminal D |
| |
• |
Ignition coil 2 control
terminal E |
| |
• |
Ignition coil 3 control
terminal F |
| |
• |
Ignition coil 4 control
terminal G |
| 6. |
Engine cranking, test for
greater than 1.5 hertz between each of the appropriate ignition
control circuit and ground. |
| ⇒ |
If less than the specified range, test the
ignition control circuit for a short to voltage, short to ground,
or an open/high resistance. If the circuit tests normal, replace
the K20 Engine Control Module. |
| 7. |
If all circuits test normal,
test or replace the T8 Ignition Coil. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
