DTC P052E or P053A-P053C
Diagnostic Instructions
DTC Descriptors
| DTC P052E 00: Positive Crankcase Ventilation
Heater Performance |
| DTC P053A 00: Positive Crankcase Ventilation
Heater Control Circuit Malfunction |
| DTC P053B 00: Positive Crankcase Ventilation
Heater Control Circuit Low Voltage |
| DTC P053C 00: Positive Crankcase Ventilation
Heater Control Circuit High Voltage |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Ignition
|
P053A 00
|
P053A 00
|
-
|
-
|
Output Control
|
P053B 00
|
P053A 00
|
P053C 00
|
P052E 00
|
|
| |
Circuit/System Description
The positive crank case ventilation heater is controlled by the
ECM. Ignition voltage is directly supplied to the positive crank
case ventilation heater and the ECM provides a controlled ground
circuit.
Conditions for Running the DTC
| • |
The ignition is ON, or the
engine is running. |
| • |
The DTCs run continuously when
the above conditions are met. |
Conditions for Setting the DTC
P052E
The ECM detects an over temperature at the output powerstage when
the positive crank case ventilation heater is commanded ON.
P053A
The ECM detects an open circuit when the positive crank case
ventilation heater is commanded ON.
P053B
The ECM detects a short to ground when the positive crank case
ventilation heater is commanded ON.
P053C
The ECM detects a short to voltage when the positive crank case
ventilation heater is commanded ON.
Action Taken When the DTC Sets
DTCs P052E, P053A, P053B and P053C are Type A DTCs.
Conditions for Clearing the DTC
DTCs P052E, P053A, P053B and P053C are Type A DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
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
| • |
DTC P052E, P053A, P053B or
P053C should not set. |
| • |
Operate the vehicle within the
Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observe from the Freeze
Frame/Failure Records data. |
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the E45 Crankcase Ventilation Heater.
|
| 2. |
Ignition ON, test for less
than 5 Ω between the low reference circuit terminal 1 and
earth. |
| ⇒ |
If greater than the specified range, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, test or replace the K20 Engine Control Module. |
| 3. |
Test for 3.0-4.0 V between the
low reference circuit and ground. |
| ⇒ |
If greater than the specified range, test the low
reference circuit for a short to voltage. If the circuit tests
normal, test or replace the K20 Engine Control Module. |
| ⇒ |
If less than the specified range, test the low
reference circuit for a short to ground. If the circuit tests
normal, test or replace the K20 Engine Control Module. |
| 4. |
Test for greater than 9 V
between the control circuit and ground. |
| ⇒ |
If less than the specified range, test the control
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, test or replace the K20 Engine Control
Module. |
| 5. |
If all circuits test normal,
test or replace the E45 Crankcase Ventilation Heater. |
Component Testing
Static Test
| 1. |
Ignition OFF, disconnect the
harness connector at the E45 Crankcase Ventilation Heater.
|
| 2. |
Test for 6.0-10.0 Ω
between the control terminal 1 and the low reference terminal 2 of
the E45 Crankcase Ventilation Heater. |
| ⇒ |
If not within the specified range, replace the E45
Crankcase Ventilation Heater. |
| 3. |
Test for infinite resistance
between each terminal and the E45 Crankcase Ventilation Heater
housing. |
| ⇒ |
If not the specified value, replace the E45
Crankcase Ventilation Heater. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Engine Control Module Replacement for ECM replacement, setup,
and programming
|
