Battery, Charging System and Starting System Chevrolet Malibu VIII

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition OFF, measure and record the battery voltage at the battery terminals. The battery voltage should stabilize between 12.4 and 12.8 V within a few minutes of turning the ignition OFF. If not within the specified range, refer to «Battery Inspection/Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be at least 1 V greater than the voltage measured in step 1 but less than 15 V. If not within the specified range, refer to «Charging System Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Observe the appropriate module scan tool B+ and ignition voltage parameters. The voltage readings should be within 1 V of the battery voltage.

Circuit/System Testing

Note. Use the schematic to identify the following: Control modules the vehicle is equipped with The control modules ground, B+, and Ignition circuit terminal IDs and connectors

Ignition OFF, disconnect the harness connectors at the appropriate control module.
Ignition OFF, scan tool disconnected, open and close the driver door and wait 1 minute. Test for less than 10 ohms between each ground circuit terminal and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
If equipped, verify that a test lamp illuminates between each B+ circuit terminal and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
If equipped, ignition ON, verify that a test lamp illuminates between each ignition circuit terminal and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
If all circuits test normal, replace the control module module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for control module replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5-Volt Reference	B1516 08	B1516 08
Signal	B1516 08	B1516 08	B1516 08	B1516 08, B1516 66
Low Reference		B1516 08

The body control module (BCM) supplies 5 volts and ground to the battery current sensor. The battery current sensor measures the amount of current flowing to or from the battery, and supplies a pulse width modulation (PWM) signal to the BCM. The BCM monitors the battery current signal, and sets DTC B1516 08 if the signal is outside the normal range of 4-96 percent duty cycle. The BCM also monitors the current polarity, and sets DTC B1516 66 if reverse polarity is detected.

B1516 08

The BCM is awake.

B1516 66

The BCM is awake.
The engine is not running.
DTC B1516 08 has run and passed.
DTC B1516 66 has not run and passed.

B1516 08

The battery current signal is less than 4 percent or greater than 96 percent duty cycle for 2 minutes.

B1516 66

The battery current polarity is positive for 2 minutes.

The regulated voltage control (RVC) is disabled.

The DTC passes when the battery current signal returns to the normal range for 2 minutes.
A history DTC will clear after 100 ignition cycles.

DTC B151 66 may set if a battery charger is used.

Schematic Reference

«Starting and Charging Schematics»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Body Control System Schematics»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#data-communications-system)

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that the current sensor is mounted correctly on the negative battery cables. The sensor should be installed with the coil around the negative battery cables, with the tape tab pointing away from the battery.
Ignition OFF, disconnect the battery current sensor.
Ignition OFF and scan tool disconnected, remove the 30A IBCM 1 fuse 20 from the underhood fuse block, and wait 45 seconds. Test for less than 5 ohms between the low reference circuit terminal B and ground. If greater than the specified value, test the current sensor low reference circuit and the BCM ground circuits for an open/high resistance. If the circuits test normal, replace the BCM.
Ignition ON, test for 4.5-5.5 volts on the 5-volt reference circuit terminal A. If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM. If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the BCM.
Ignition ON, test for 4.5-5.5 volts on the signal circuit terminal C. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
If all circuits test normal, replace the battery current sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Battery Current Sensor Replacement»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Control Module References»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for BCM replacement, setup, and programming.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
CRNK Relay Control	P0615	P0615	P0615
Ground		P0615

Typical Scan Tool Data

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition in Start. Parameter Normal Value: OK
CRNK Relay Control	Fault	Not Run	Not Run

Starter Relay Ckt Short Gnd Test Status - ECM

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON, Engine OFF. Parameter Normal Value: OK
CRNK Relay Control	Not Run	Fault	Not Run

Starter Relay Ckt Open Test Status - ECM

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON, Engine OFF. Parameter Normal Value: OK
CRNK Relay Control	Not Run	Not Run	Fault

Starter Relay Ckt Short Volts Test Status - ECM

When the ignition switch is placed in the START position, a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the START position. The BCM then sends a serial data message to the engine control module (ECM) that crank has been requested. The ECM then verifies that the transmission is in Park or Neutral. If it is, the ECM then supplies 12 V to the control circuit of the CRNK relay. When this occurs, battery voltage is supplied through the switch of the CRNK relay to terminal A X2 of the starter solenoid. The ECM monitors the voltage on the starter relay control circuit. If the voltage is not what is expected, then DTC P0615 sets.

The ignition is in the START position.
The system voltage is between 9.5-18 V.

The ECM detects improper voltage on the control circuit of the CRNK relay.

DTC P0615 is a type C DTC.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Attempt to start the engine while observing the following ECM scan tool control circuit status parameters.

Starter Relay Ckt Short Gnd Test Status
Starter Relay Ckt Open Test Status
Starter Relay Ckt Short Volts Test Status

Each parameter should toggle between OK and Not Run or Not Run and OK.

Ignition OFF, disconnect the CRNK relay.
Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the ground circuit terminal 85 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
Connect a test lamp between the control circuit terminal 86 and the ground circuit terminal 85.
Transmission in park, turn the ignition switch between the OFF and START positions. The test lamp should turn ON and OFF when changing between the positions. If the test lamp is always ON, test the control circuit for short to voltage. If the circuit tests normal, replace the ECM. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
If all circuits test normal, test or replace the CRNK relay.

Component Testing

Relay Test

Ignition OFF, disconnect the CRNK relay.
Test for 60-180 ohms between terminals 85 and 86. If not within the specified range, replace the relay.
Test for infinite resistance between the following terminals: 30 and 86 30 and 87 30 and 85 85 and 87 If not the specified value, replace the relay.
Install a 20 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87. If greater than specified range, replace the relay.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Relay Replacement (Within an Electrical Center)»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions) , «Relay Replacement (Attached to Wire Harness)»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions)
«Control Module References»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
B+	P0622	P0622
Generator Turn On Signal	P0621	P0621	P0621
Generator Field Duty Cycle Signal	P0622	P0622	P0622	P0622

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Engine Running. Parameter Normal Value: OK
Generator Turn On Control	Fault	Not Run or OK	Not Run or OK

GEN L-Terminal Ckt Short Gnd Test Status - ECM

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Engine Running. Parameter Normal Value: Not Run or OK
Generator Turn On Control	Not Run or OK	Not Run or Fault	Not Run or OK

GEN L-Terminal Ckt Open Test Status - ECM

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON. Parameter Normal Value: OK
Generator Turn On Control	Not Run or OK	Not Run or OK	Fault

GEN L-Terminal Ckt Short Volts Test Status - ECM

The engine is running.

The ECM detects high or low voltage on the generator turn on signal circuit for 15 seconds.

The charge indicator turns ON.

The DTC will pass when the conditions for setting the DTC are no longer met for 1 second.
A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Engine running, observe the following scan tool ECM control circuit status parameters.

GEN L-Terminal Ckt Short Gnd Test Status
GEN L-Terminal Ckt Open Test Status
GEN L-Terminal Ckt Short Volts Test Status

Each parameter should read OK or Not Run.

Verify that a test lamp illuminates between the G13 generator B+ terminal "+" X2 and ground. If the test lamp does not illuminate and the circuit fuse is good Ignition OFF. Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate and the circuit fuse is open Ignition OFF. Test for greater than 100 ohms between the B+ circuit and ground. If 100 ohms or less, repair the short to ground on the circuit. If greater than 100 ohms, replace the G13 generator. If the test lamp illuminates
Ignition OFF, disconnect the X1 harness connector at the G13 generator, ignition ON.
Test for 4.5-5.5 V between the generator turn on signal circuit terminal 1 X1 and ground. If less than 4.5 V Ignition OFF, disconnect the harness connectors at the K20 ECM. Test for infinite resistance between the generator turn on signal circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the generator turn on signal circuit end to end. If greater the 2 ohms, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K20 ECM. If greater the 5.5 V Ignition OFF, disconnect the X3 (LE5 or LE9) or X2 (LY7) harness connector at the K20 ECM, ignition ON. Test for less than 1 V between the generator turn on signal circuit and ground. If greater than 1 V, repair the short to voltage on the circuit. If less than 1 V, replace the K20 ECM. If between 4.5-5.5 V
Test or replace the G13 generator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Generator Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Generator Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Control Module References»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
B+	P0622	P0622
Field Duty Cycle Signal	P0622	P0622	P0622

Circuit	Short to ground	Open	Short to voltage
Operating Conditions: Engine Running Parameter Normal Range: 5% to 99%
B+	0%	0%
Field Duty Cycle Signal	0%	0%	99%

GEN F-Terminal Signal - ECM

The engine control module (ECM) uses the generator field duty cycle signal circuit, or F-terminal circuit, to monitor the duty cycle of the generator. The generator field duty cycle signal circuit connects to high side of the field windings in the generator. A pulse width modulated (PWM) high side driver in the voltage regulator turns the field windings ON and OFF. The ECM uses the PWM signal input to determine the generator load on the engine. This allows the ECM to adjust the idle speed to compensate for high electrical loads. The ECM monitors the status of the generator field duty cycle signal circuit. When the key is in the RUN position and the engine is OFF, the ECM should detect a duty cycle near 0 percent. However, when the engine is running, the duty cycle should be between 5-99 percent.

The engine is running.
The system voltage is between 9.5-18 V.

The ECM detects that the generator field duty cycle signal is less than 5 percent for 30 seconds.

The charge indicator turns ON.

The DTC will pass when the generator field duty cycle signal is greater than 5 percent for 1 second.
The charge indicator will turn OFF when the DTC passes or is cleared with a scan tool.
A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, engine OFF, observe the scan tool ECM GEN-F Terminal Signal parameter. The reading should be less than 5%.
Engine running, observe the scan tool ECM GEN-F Terminal Signal parameter. The reading should be greater than 5%.

Verify that a test lamp illuminates between the B+ circuit terminal X2 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
Ignition OFF, disconnect the X1 harness connector at the generator.
Ignition ON, verify the scan tool ECM GEN-F Terminal Signal is less than 5%. If greater than the specified range, test the signal circuit terminal 2 or C X1 for a short to voltage. If the circuit tests normal, replace the ECM.
Install a 3 A fused jumper wire between the signal circuit terminal 2 or C X1 and B+. Verify the scan tool ECM GEN-F Terminal Signal is greater than 95%. If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
If all circuits test normal, test or replace the generator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Generator Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Generator Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Control Module References»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Generator L-Terminal Circuit	P1668	P1668	P1668

The engine control module (ECM) uses the generator turn on signal circuit, or L-terminal circuit, to control the load of the generator on the engine. A high side driver in the ECM applies a voltage to the voltage regulator. This signals the voltage regulator to turn the field circuit ON and OFF. The ECM monitors the state of the generator turn ON signal circuit. The ECM should detect low voltage on generator turn on signal circuit when the ignition is ON and the engine is OFF, or when the charging system malfunctions. With the engine running, the ECM should detect high voltage on the generator turn on signal circuit. The ECM performs tests to determine the status of the generator turn on signal circuit.

The engine is running.

During the Key ON test the ECM detects high voltage on the generator turn on signal circuit for 5 seconds.
With the engine running the ECM detects low voltage on the generator turn on signal circuit for 15 seconds.

The ECM will command the charge indicator to be illuminated on the instrument panel cluster (IPC).
The ECM will not illuminate the malfunction indicator lamp (MIL).
The ECM will store conditions, which were present when the DTC set as Fail Records data only.

The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

Schematic Reference

Connector End View Reference

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Ignition OFF, disconnect the harness connector at the generator.
Ignition ON, test for less than 1 volt between the generator turn on signal circuit terminal 1 and ground. If greater than the specified range, test the generator turn on signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
Engine running, test for greater than 3.5 volts between the generator turn on signal circuit and ground. If less than the specified range, test the generator turn on signal circuit for a short to ground, an open or a high resistance. If the circuit tests normal, replace the ECM.
If the circuit tests normal, replace the generator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Generator Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Generator Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Control Module References»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Symptoms - Engine Electrical

Note. The following steps must be completed before using the symptom tables.

Perform «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control modules can communicate via the serial data link.
Review the system descriptions and operations in order to familiarize yourself with the system functions. Refer to one of the following system operations: «Battery Description and Operation»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__battery-description-and-operation) «Charging System Description and Operation»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) «Electrical Power Management Description and Operation»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) «Starting System Description and Operation»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__starting-system-description-and-operation)

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the starting and charging systems. Refer to «Checking Aftermarket Accessories»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__checking-aftermarket-accessories) .
Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

«Battery Inspection/Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Battery Electrical Drain/Parasitic Load Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Charging System Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Generator Noise Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Starter Solenoid Does Not Click»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Starter Solenoid Clicks, Engine Does Not Crank»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Engine Cranks Slowly»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__engine-cranks-slowly)
«Starter Noise Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

WARNING

Refer to Battery Disconnect Warning .

Note. The battery test using the regionally available battery tester requires correct connections to the battery terminals. Ensure that battery tester clamps are connected directly to either the battery post or the battery cable terminal. Do not connect clamps to battery cable fasteners. Failure to obtain the correct connections during the test may result in a failed test on a good battery. Use the Out of Vehicle test for each battery when testing a vehicle with dual batteries.

Follow these instructions in order to avoid an incorrect diagnosis because of connections

If testing the vehicle with the battery cables still connected, wiggle the battery tester clips on the terminal. This may cut through any coating or through any oxidation that may be present on the terminal.
If correct connections to the battery terminals in the vehicle are in doubt, perform the following steps: Disconnect the negative battery cable. Disconnect the positive battery cable. Follow the instructions for testing a removed battery.
If the tester displays a REPLACE BATTERY or BAD CELL-REPLACE result for a battery tested in the vehicle with the battery cables connected, perform the following steps: Disconnect the negative battery cable. Disconnect the positive battery cable. NOTE: Always write the test code displayed by the tester on the repair order for any warranty purposes. The number is a unique code that describes the test data for a particular battery at a particular time. The test code may occasionally repeat when you retest the same battery. More often, each test will result in a different code. Use the test code from the second, or Out of Vehicle test. Follow the instructions for testing a removed battery. Replace the battery only if the second test shows a REPLACE BATTERY or BAD CELL-REPLACE result. Use the test code from the second test for any warranty purposes.

Schematic Reference

Connector End View Reference

Description and Operation

Battery Replacement (LE5, LE9, LY7)

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

Battery Tester, for regionally available devices, refer to Special Tools .

WARNING

Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components. For Vehicles equipped with OnStar® (UE1) with Back Up Battery: The Back Up Battery is a redundant power supply to allow limited OnStar® functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar®module). Do not disconnect the main vehicle battery or remove the OnStar® fuse with the ignition key in any position other than OFF. Retained accessory power (RAP) should be allowed to time out or be disabled (simply opening the driver door should disable RAP) before disconnecting power. Disconnecting power to the OnStar® module in any way while the ignition is On or with RAP activated may cause activation of the OnStar® Back-Up Battery (BUB) system and will discharge and permanently damage the back-up battery. Once the Back-Up Battery is activated it will stay on until it has completely discharged. The BUB is not rechargeable and once activated the BUB must be replaced.

Verify the C1 battery case is not cracked, broken, or damaged, which may be indicated by battery acid leakage. If there is any apparent damage Replace the C1 battery. If there is no damage
Verify the cold cranking amperage and amperage hour rating of the C1 battery. Refer to the manufacturer specifications on the battery label. If the C1 battery does not meet or exceed specifications Replace the C1 Battery. If the C1 Battery meets or exceeds specifications
Verify that the battery cables are clean and tight. The battery terminal bolts should be torqued as specified in «Fastener Tightening Specifications»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__fastener-tightening-specifications) . If the battery cables need to be cleaned or tightened Clean as required and tighten as specified. If the battery cables are clean and tight
Install the battery tester and follow directions supplied by the tester.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Special Tools

EL 42000 Battery Tester

For equivalent regional tools, refer to Special Tools .

For best results, use an automatic taper-rate battery charger with a voltage capability of 16 V.
The charging area should be well ventilated.
Do not charge a battery that appears to be frozen. Allow the battery to warm to room temperature and test it using the EL 42000 Battery Tester before charging.

Battery State of Charge

Note. Using voltage to determine the batteries state of charge is only accurate after the battery has been at rest for 24 hours. This is enough time for the acid in each cell to equalize. If the battery has been charged or discharged in the past 24 hours, the battery state of charge will only be an estimate.

The maintenance-free batteries state of charge is estimated by reading the voltage of the battery across the battery terminals. Because the voltage is affected by current flow into or out of the battery, the engine must be stopped and all electrical loads turned OFF, including parasitic loads, when checking the voltage. The voltage can also be affected if the battery has just been charged or discharged, so it is important to consider what has happened to the battery in the time just before testing. Use the following procedure to determine the batteries state of charge

Be sure all electrical loads are turned OFF.
Determine whether the battery has been used in a vehicle or charged within the past 12 hours. If the answer is no, the terminal voltage will be stabilized and no action is necessary before reading the voltage. Skip to step 3. If the answer is yes, terminal voltage will not be stabilized and you should wait 12 hours since the last time the battery was used.
Estimate the battery temperature by determining the average temperature to which the battery has been exposed for the past 12 hours.
Measure the battery voltage at the battery terminals. Refer to the following table to determine the state of charge according to the estimated battery temperature

Battery Voltage	% Charge at 0°C (32°F)	% Charge at 25°C (75°F)
12.75 V	100%	100%
12.7 V	100%	90%
12.6 V	90%	75%
12.45 V	75%	65%
12.2 V	65%	45%
12.0 V	40%	20%

Battery Charging

Use the state of charge information as follows

A battery with a state of charge that is below 65 percent must always be recharged before returning it to service or continuing storage.
A battery with a state of charge that is 65 percent or greater is generally considered to be charged enough in order to be returned to normal service or in order to continue storage. However, if the battery is being used in slow traffic or with short drive times, or if the temperature is very hot or very cold, the battery should be fully charged, to at least 90 percent, before returning it to service or continuing storage.

Charging Time Required

The time required to charge a battery will vary depending upon the following factors

The battery charger capacity-The higher the charger amperage, the less time it will take to charge the battery.
The state of charge of the battery-A completely discharged battery requires more than twice as much charging time as a half charged battery. In a discharged battery with a voltage below 11 V, the battery has a very high internal resistance and may only accept a very low current at first. Later, as the charging current causes the acid content to increase in the electrolyte, the charging current will increase. Extremely discharged batteries may not activate the reversed voltage protection in some chargers. Refer to the manufacturer's instructions for operating this circuitry.
The temperature of the battery-The colder the battery is, the more time it takes to recharge the battery. The charging current accepted by a cold battery is very low at first. As the battery warms, the charging current will increase.

Charging Procedure

CAUTION

Turn OFF the ignition when connecting or disconnecting the battery cables, the battery charger or the jumper cables. Failure to do so may damage the ECM/PCM or other electronic components.

CAUTION

Refer to Fastener Caution .

When charging side-terminal batteries with the battery cables connected, connect the charger to the positive cable bolt and to a ground located away from the battery. When charging side-terminal batteries with the battery cables disconnected, install the battery side terminal adapters and connect the charger to the adapters.

Tighten

Tighten the battery side terminal adapters to 15 N.m (11 lb ft).

Use the following procedure to charge the battery

Turn OFF the charger.
Ensure that all of the battery terminal connections are clean and tight.
Connect the charger positive lead to the battery positive terminal on the battery or the remote jumper stud underhood.
Connect the negative charger lead to a solid engine ground or to a ground stud in the engine compartment that is connected directly to the battery negative terminal, but away from the battery. If the negative battery cable is disconnected and a terminal adapter is being used, connect directly to the adapter.
Turn ON the charger and set to the highest setting for normal charging.
Inspect the battery every half hour after starting the battery charger. Charge the battery until the taper-rate charger indicates that the battery is fully charged. Estimate the battery temperature by feeling the side of the battery. If it feels hot to the touch or its temperature is over 45°C (125°F), discontinue charging and allow the battery to cool before resuming charging.
After charging, test the battery. Refer to «Battery Inspection/Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .

12 V Battery

The following procedure is for the 12 V battery only.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Components most likely to cause a parasitic draw on the vehicles battery are switches, relays, and control modules. After the ignition is turned OFF the control modules will begin to go to sleep (shut OFF). All control modules do not go to sleep at the same time, some may take up to 30 min or longer after turning the ignition off before going to sleep, like the HVAC and body control modules. Others such as the ON Star and keyless entry control modules may periodically wake up then go back to sleep. These are all normal conditions.

Rule out any possible aftermarket equipment causing an unacceptable parasitic current drain. Aftermarket accessories installed into the courtesy lamp circuit can cause the inadvertent power timer in the body control module (BCM) to keep resetting. This may cause the BCM to remain awake and cause a current drain on the battery.
Rule out customer driving habits such as regular short trips that do not allow enough time to properly charge the battery. Refer to «Battery Description and Operation»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__battery-description-and-operation) .
Verify that the battery and charging system are in proper working order. Refer to «Battery Charging»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , and «Charging System Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
A battery discharging for no apparent reason while the vehicle is parked can be caused by an intermittent draw, such as a module waking up, or a continuous draw, such as a dome light or stuck relay.
Some systems and modules such as OnStar®, and regulated voltage control, if equipped, are designed to wake up, perform a task, and go back asleep at regular intervals. Refer to «Body Control System Description and Operation»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#data-communications-system__body-control-system-description-and-operation) for the system or modules description and operation.
An engine off natural vacuum evaporative test can occur if the engine control module (ECM) determines the drive cycle has met the appropriate criteria immediately after key off. The ECM will stay awake and the vent solenoid will stay energized for as long as 45 min. The typical current draw for this is about 1 A.
Digital OnStar generator 6 and later vehicle communication interface module do not "wake up" every 10 min for the first 48 h as the generator 5 and prior. Generator 6 and later vehicle communication interface module current draw is very low, less than 40 mA, so the OnStar system is left in that state for up to the first 48 h. Parasitic draw of up to 40 mA with an occasional spike as high as 80 mA through the vehicle communication interface module for the first 48 h is normal.
Some automatic climate control systems can remain in a semi awake state for up to three hours, actual draw amounts vary by vehicle platform but are typically not greater than 50 mA.
An extremely low mA current level is consumed by the remote keyless entry receiver for monitoring purposes, actual system wake up only occurs when the fobs for the vehicle are used. When other devices on the same remote keyless entry operating frequency are activated, such as the 4 tire pressure monitoring sensors and other vehicle FOBs in the vicinity, the remote keyless entry receiver will have a 100 mA spike. These spikes are normal and occur too briefly to have a significant effect on battery drain. Competing signals may cause remote keyless entry performance issues such as jamming but should not cause excessive battery draw.
If an excessive current draw is not present during initial testing, continue periodic testing over a 1-2 hour period to see if the current draw increases and stays above an unacceptable level.
The battery run down time will vary depending on the batteries reserve capacity. If the reserve capacity is higher, then the battery run down time may be longer. If the reserve capacity is lower, then the battery run down time may be shorter. The graph below indicates roughly how many days a 690 cold cranking amperage battery with a 110 min. reserve capacity starting at 80 percent state of charge will last with a constant current draw until it reaches 50 percent state of charge. Differences in battery reserve capacity and temperature will affect the results.

Current Drain	Days
25 mA	33
50 mA	16.5
75 mA	11
100 mA	8.25
250 mA	3.3
500 mA	1.65
750 mA	1
1 A	0.8
2 A	0.4

Schematic Reference

Control Module References

Connector End View Reference

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL 38758 Parasitic Draw Test Switch

For equivalent regional tools, refer to Special Tools .

Note. Most vehicle systems will go to sleep within 30 min but it can take up to 2 h before all systems power down allowing the parasitic draw test to pass. An occasional increase in the parasitic draw is normal as long as it returns within 1 s. Closing the door latches/ajar switch while leaving the doors open is recommended, this allows the vehicle systems to perform in a "doors closed" mode while allowing vehicle interior access that may be needed to complete the diagnostic steps. Locking doors will arm the vehicle content theft deterrent system if equipped. Failure to arm the system may cause a theft system fault to not be present during testing. There are many things that can prevent the vehicle from completely going to sleep and passing the parasitic draw test. Make sure all the conditions listed below are met before performing the parasitic current draw test. Ignition OFF Key out of the ignition switch - when not equipped with keyless access and start Retained Accessory Power OFF - open and close the driver door after ignition OFF Scan tool not communicating with a vehicle control module - in some cases it may need to be disconnected from the DLC All access doors closed Headlamps OFF - auto headlamps disabled Any delay lighting OFF If equipped with an under hood lamp disable it HVAC after blow OFF Any accessory that can work with ignition OFF inactive or OFF Wait up to 2 min or longer, after all other listed conditions are met

Using an Inductive Pickup Probe

Connect an inductive pickup probe to the negative battery cable that can read down to 1 mA.
Ignition OFF, as the vehicle systems shut down test for less than 30 mA of parasitic current drain. If greater than the specified range, refer to Circuit/System Testing.

Using the EL 38758 Parasitic Draw Test Switch

Ignition OFF, disconnect the battery negative cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection (LE5, LE9, LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Turn the EL 38758 switch knob to the OFF position.
Install the male end of the EL 38758 switch to the battery ground terminal.
Install the battery negative cable to the female end of the EL 38758 switch.
Turn the EL 38758 switch knob to the ON position.
Road test the vehicle and activate all of the accessories such as the radio and air conditioning.
Ignition OFF, connect a 10 A fused jumper wire to the test switch tool terminals.
Turn the EL 38758 switch knob to the OFF position. The current now flows through the jumper wire.
Check the fuse in the jumper wire. The fuse should be OK. Failed: If the jumper wire fuse is blown, refer to Circuit/System Testing. Passed
Turn the EL 38758 switch knob to the ON position. Remove the fused jumper wire.
Connect a DMM set to the 10 A DC scale between the test switch tool terminals.
Turn the EL 38758 switch knob to the OFF position. The current now flows through the DMM.
As the vehicle systems shut down test for less than 30 mA of parasitic current drain. If greater than the specified range, refer to Circuit/System Testing.

Note. Removing or installing a fuse, relay, or connector, to determine the area causing high parasitic draw may wake up control modules. You must wait for the control modules to go back to sleep before retesting. It is best to install any removed or disconnected components after the diagnosis is completed. Fuses for power mode master components such as the BCM should be removed last to avoid misdiagnosis. If a scan tool is connected to the DLC, either disconnect it or subtract the scan tool current draw from the DMM reading to get the actual vehicle parasitic current draw.

If the vehicle has an unacceptable amount of parasitic current draw, remove each fuse one at a time until the current draw falls to an acceptable level. A drop of more than 10-20 mA, when disabling a single system or circuit, is an indication of an overly high current draw that could be causing the battery drain. Refer to Power Distribution Schematics to diagnose exactly which circuit of the suspect system is causing the high parasitic drain. The following is a list of common components that could cause a high current draw

Stuck switch
Stuck relay
Control module

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for control module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Schematic Reference

Connector End View Reference

Description and Operation

Generator Replacement (LY7) , Generator Replacement (LE5/LE9)

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Engine running, observe the charge indicator on the instrument cluster or message in the driver information center display. The charge indicator on the instrument cluster should be turned OFF and the driver information center display should not display any charging system message.

Ignition ON, verify that no G13 Generator or B18 battery current sensor DTCs are set that would cause a charging system concern. If DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-trouble-code-dtc-list) .
Ignition OFF, measure the voltage across the battery terminals. The voltage should read 12.0 V or greater at room temperature. If not within the specified value, refer to «Battery Inspection/Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Engine ON, increase engine speed to 2, 500 RPM. Verify the battery voltage is between 12.6-15.0 V. If not within specified range, replace the G13 generator.
Engine ON, increase engine speed to 2, 500 RPM. Turn ON all vehicle accessories. Verify the battery voltage is between 12.6-15.0 V. If not within specified range, replace the G13 generator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Noise from a generator may be due to electrical or mechanical noise. Electrical noise or magnetic whine usually varies with the electrical load placed on the generator and is a normal operating characteristic of all generators. When diagnosing a noisy generator, it is important to remember that loose or misaligned components around the generator may transmit the noise into the passenger compartment and that replacing the generator may not solve the problem.

Start the engine. Verify the noise can be heard. Compare the concern to a similar vehicle.
Perform a charging system test. Verify that the generator is charging properly. Refer to «Charging System Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Inspect the generator, generator mounting, wiring harness, heater hoses, A/C lines, or other accessory equipment that may be misrouted or be the cause of noise being transmitted into the passenger compartment.
Ignition OFF, remove the engine drive belt. Verify the generator, A/C compressor, water pump pulley (LYZ/LZ4), power steering pump (if equipped), idler pulley (except LE5), and tensioner pulley spin freely. If any of the pulleys do not spin freely, replace the affected component.
Start the engine, with the drive belt removed. Verify that the noise goes away. Operate the engine for no longer than 30-40 seconds (LYZ/LZ4). If the noise is still present, the generator is not the cause of the noise.
Loosen all generator mounting bolts and ensure the generator is properly aligned. Tighten the mounting bolts to specification, refer to «Generator Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Generator Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Drive Belt Replacement (LE5)»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-24l__drive-belt-replacement-le5) 2.4L (LAT/LE5)
«Drive Belt Tensioner Replacement (LE5)»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-24l) 2.4L (LAT/LE5)
«Drive Belt Replacement»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-36l-repair-instructions-on-vehicle) 3.6L (LY7)
«Drive Belt Tensioner Replacement»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-36l-repair-instructions-on-vehicle) 3.6L (LY7)
«Generator Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Generator Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Underhood Fuse Block B+	1	1
ECM IGN Fuse 16		1
STRTR Fuse 26		1
Park Neutral Signal	2	1	1
Starter Relay Coil Control	1	1	3
Starter Solenoid Crank Voltage	1	1	3
PNP Switch Ground		1
Underhood Fuse Block Ground		1
1. No crank 2. Cranks in any gear 3. Cranks all the time

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON, engine OFF. Parameter Normal Value: 12.6 Volts
Ignition	0.0 Volts	0.0 Volts	12.6 Volts

Ignition 1 Signal - ECM

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON, transmission in Park. Parameter Normal Value: Park/Neutral
Signal	Park/Neutral	In Gear	In Gear

PNP Switch - ECM

The engine control module (ECM) controls engine cranking based on a power mode input and the status of the park/neutral position (PNP) switch. With the transmission in Park/Neutral, voltage at the ECM PNP switch signal circuit is low. This indicates to the ECM that conditions are acceptable for cranking. When a power mode crank request is seen, the ECM applies voltage to the starter relay coil control circuit. This energizes the coil side of the relay, which pulls the switch side of the relay closed, applying voltage to the starter terminal A X1 and engaging the starter solenoid.

Inspect the ECM IGN fuse and the STRTR fuse for an open.
Verify that grounds G107 and G109 are clean and tight.

Schematic Reference

«Starting and Charging Schematics»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Engine Controls Schematics»(/chevrolet/malibu/viii-2011-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-wiring-schematic-diagrams)

Connector End View Reference

Description and Operation

Electrical Information Reference

«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that no starter relay, immobilizer, or automatic transmission DTCs are set that would cause the ECM to disable starting. If the specified DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-trouble-code-dtc-list) .
Ignition ON, observe the scan tool ECM Ignition 1 Signal parameter with a scan tool. The reading should be greater than 10.0 Volts. If less than the specified value, test the ECM IGN fuse, the RUN/CRNK relay, and the ignition voltage circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
Ignition ON, transmission in Park, observe the scan tool ECM PNP Switch parameter with a scan tool. The reading should be Park/Neutral. If the scan tool PNP Switch parameter is not Park/Neutral, refer to PNP Switch Circuit Malfunction.
Command the Starter Relay ON with the scan tool, or turn the ignition switch to the START position. The starter solenoid should engage and the engine should crank. If the solenoid does not engage, refer to Start Relay Circuit Malfunction. If the solenoid engages but the engine does not crank, refer to «Starter Solenoid Clicks, Engine Does Not Crank»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .

PNP Switch Circuit Malfunction - 6T40/6T45 (MH8)

Inspect the range selector lever cable for proper adjustment. Refer to «Range Selector Lever Cable Adjustment»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t40-repair-instructions-on-vehicle__range-selector-lever-cable-adjustment) .
Ignition OFF, disconnect the harness connector at the transmission inline 20-way connector.
Ignition ON, test for greater than 10 V on the park/neutral signal circuit terminal 3. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
Ignition OFF, remove the control valve body cover. Refer to «Control Valve Body Cover Replacement»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t40-repair-instructions-on-vehicle) .
Connect the transmission inline 20-way connector, with the cover removed.
Disconnect the shift position switch connector from the TCM. Refer to «Control Solenoid Valve and Transmission Control Module Assembly Replacement»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t40-repair-instructions-on-vehicle) .
Ignition ON, verify that the scan tool ECM PNP Switch parameter is In Gear. If not the specified value, replace the ECM.
Connect a 3 A fused jumper wire between the park/neutral signal terminal F of the TCM and ground. The scan tool PNP Switch parameter should be Park/Neutral when the terminal is connected to ground. If not the specified value, replace the ECM.
If all circuits test normal, test or replace the shift position switch.

PNP Switch Circuit Malfunction - 6T70 (MH2)

Inspect the range selector lever cable for proper adjustment. Refer to «Range Selector Lever Cable Adjustment»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t70-repair-instructions-on-vehicle__range-selector-lever-cable-adjustment) .
Ignition OFF, disconnect the harness connector at the transmission inline 20-way connector.
Ignition ON, test for greater than 10 V on the park/neutral signal circuit terminal 20. If there is less than 10 V on the park/neutral signal circuit, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
Ignition OFF, remove the control valve body cover. Refer to «Control Valve Body Cover Replacement»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t70-repair-instructions-on-vehicle) .
Connect the transmission inline 20-way connector, with the cover removed.
Disconnect the internal mode switch connector at the control solenoid valve assembly.
Ignition ON, verify that the scan tool PNP Switch parameter is In Gear. If not the specified value, replace the ECM.
Connect a 3 A fused jumper wire between the park/neutral signal terminal F at the control solenoid valve assembly and ground. The scan tool PNP Switch parameter should be Park/Neutral when the terminal is connected to ground. If not the specified value, replace the ECM.
If all circuits test normal, test or replace the internal mode switch.

Start Relay Circuit Malfunction

Ignition OFF, disconnect the START relay.
Ignition OFF and scan tool disconnected, open and close the driver door, and wait 45 seconds. Test for less than 5 ohms between the relay ground circuit terminal 85 and ground. If greater than the specified value, test the ground circuit for an open/high resistance.
Verify that a test lamp illuminates between the B+ circuit terminal 30 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
Connect a test lamp between the relay coil ground circuit terminal 85 and the relay coil control circuit terminal 86.
Ignition ON, transmission in Park, turn the ignition switch between the start and run positions. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the relay coil control circuit for a short to voltage. If the circuit tests normal, replace the ECM. If the test lamp is always OFF, test the relay coil control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
Connect the START relay.
Install a test lamp between the starter terminal A X1 and ground.
Ignition ON, transmission in Park, turn the ignition switch to the start position. The test lamp should illuminate. If the test lamp does not illuminate, test the starter control circuit terminal 87 for an open/high resistance. If the circuit tests normal, test or replace the START relay.
If all circuits test normal, test or replace the starter.

START Relay

Ignition OFF, disconnect the START relay.
Test for 60-180 ohms between terminals 85 and 86. If not within the specified range, replace the relay.
Test for infinite resistance between the following terminals: 30 and 86 30 and 87 30 and 85 85 and 87 If not the specified value, replace the relay.
Install a 20 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87. If greater than specified range, replace the relay.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Range Selector Lever Cable Adjustment»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t70-repair-instructions-on-vehicle__range-selector-lever-cable-adjustment) for the 6T70 (MH2) transmission.
«Relay Replacement (Within an Electrical Center)»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions) , «Relay Replacement (Attached to Wire Harness)»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions)
«Manual Shift Detent Lever with Shaft Position Switch Assembly Replacement»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t40-repair-instructions-on-vehicle) for the 6T40/6T45 (MH8) transmission.
«Manual Shift Detent Lever with Shaft Position Switch Assembly and Park Pawl Actuator Removal»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t70-repair-instructions-off-vehicle) for the 6T70 (MH2) transmission.
«Manual Shift Detent Lever with Shaft Position Switch Assembly and Park Pawl Actuator Installation»(/chevrolet/malibu/viii-2011-2014/remont/automatic-trans/#automatic-transmission-6t70-repair-instructions-off-vehicle) for the 6T70 (MH2) transmission.
«Starter Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Starter Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Control Module References»(/chevrolet/malibu/viii-2011-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition switch is placed in the START position, a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the START position. The BCM then sends a serial data message to the engine control module (ECM) that crank has been requested. The ECM monitors the park/neutral position switch. If the transmission is in Park or Neutral, and there are no DTCs that inhibit engine starting, then the ECM supplies voltage to the control circuit of the START relay. When this occurs, battery voltage is supplied through the START relay to S terminal of the starter solenoid. The starter solenoid energizes, and supplies battery voltage to the starter from the B terminal to crank the engine.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing)
«Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs)

Attempt to start the engine. Verify that the starter solenoid clicks.

If the starter solenoid does not click, refer to «Starter Solenoid Does Not Click»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
If the engine cranks slowly, refer to «Engine Cranks Slowly»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__engine-cranks-slowly) .

Verify that the battery is sufficiently charged and that the battery cables are clean and tight. Refer to «Charging System Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) . If the battery is not sufficiently charged, refer to «Battery Charging»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) . If the battery cables are not clean and tight, refer to «Fastener Tightening Specifications»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system__fastener-tightening-specifications) .
Using a DMM, measure voltage between the positive battery terminal and terminal B at the solenoid as the ignition switch is turned to the START position. Voltage should be less than 0.5 volt. If greater than the specified value, replace the battery cable.
Using a DMM, measure voltage between the negative battery terminal and the starter motor case as the ignition switch is turned to the START position. Voltage should be less than 0.5 volt. If greater than the specified value, replace the battery cable.
Remove the drive belt. Refer to one of the following: «Drive Belt Replacement (LE5)»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-24l__drive-belt-replacement-le5) for the 2.4L (LAT) engine «Drive Belt Replacement»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-36l-repair-instructions-on-vehicle) for the 3.6L (LY7) engine
Attempt to start the engine, with the drive belt removed. If the engine cranks, inspect the engine accessories and belt drive system for mechanical binding.
Attempt to rotate the crankshaft using a breaker bar, or other suitable tool. Verify that the engine is not seized. If the engine is seized, refer to one of the following: «Engine Will Not Crank - Crankshaft Will Not Rotate»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-24l__engine-will-not-crank-crankshaft) for the 2.4L (LAT) engine «Engine Will Not Crank - Crankshaft Will Not Rotate»(/chevrolet/malibu/viii-2011-2014/remont/mechanical/#engine-mechanical-36l-diagnostic-information-and-procedures__engine-will-not-crank-crankshaft) for the 3.6L (LY7) engine
If all circuits test normal, replace the starter motor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Battery Charging»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Battery Negative Cable Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Battery Negative Cable Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)
«Starter Replacement (LY7)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) , «Starter Replacement (LE5/LE9)»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system)

Engine Cranks Slowly

Inspect the following items

Battery - Perform the Battery Inspection/Test. Refer to «Battery Inspection/Test»(/chevrolet/malibu/viii-2011-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Wiring - Inspect the wiring for damage. Inspect all connections to the starter motor, the solenoid, the battery, and all ground connections. Refer to «Circuit Testing»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__circuit-testing) ,, «Wiring Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__wiring-repairs) ,, «Testing for Intermittent Conditions and Poor Connections»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__testing-for-intermittent-conditions-and-poor) ,, and «Connector Repairs»(/chevrolet/malibu/viii-2011-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures-and-connector-repair__connector-repairs) .
Engine - Verify that the engine is not seized.

If the battery, the wiring, and the engine are functioning properly, and the engine continues to crank slowly, replace the starter motor. Refer to Starter Replacement (LY7) , Starter Replacement (LE5/LE9) .

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/malibu/viii-2011-2014/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The PG starter motors are non-repairable. They have pole pieces that are arranged around the armature. Both solenoid windings are energized. The pull-in winding circuit is completed to the ground through the starter motor. The windings work together magnetically to pull and hold in the plunger. The plunger moves the shift lever. This action causes the starter drive assembly to rotate on the armature shaft spline as it engages with the flywheel ring gear on the engine. Moving at the same time, the plunger also closes the solenoid switch contacts in the starter solenoid. Full battery voltage is applied directly to the starter motor and it cranks the engine.

Description and Operation