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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (Hybrid Control Processor Module (HCP) - DTCS P0A02-00 To P0ADA-00) >> DTC Troubleshooting >> P0A79-00 Drive Motor B Inverter Performance >> Enabling Conditions And Possible Causes-Motor B Resolver

Enabling Conditions And Possible Causes-Motor B Resolver

WARNING: This page is about a different variant/trim than selected.
MONITORING CONDITIONS
Sensor Power Supply 2 Circuit Low  - With the ignition on, battery voltage above a calibrated threshold, diagnostic monitor enabled.
Sensor Power Supply 2 Circuit High  - With the ignition on, battery voltage above a calibrated threshold, diagnostic monitor enabled.
Sensor 2 Circuit Fault  - With the ignition on, battery voltage above a calibrated threshold, diagnostic monitor enabled.
Sensor Circuit Intermittent Fault  - With the ignition on, battery voltage above a calibrated threshold, diagnostic monitor enabled.
Sensor Circuit 2 Overspeed Fault  - With the ignition on, battery voltage above a calibrated threshold, diagnostic monitor enabled.
Drive Motor B Performance Fault  - With the ignition on, battery voltage above a calibrated threshold, diagnostic monitor enabled.
FAULT SETTING CRITERIA
Sensor Power Supply 2 Circuit Low  - The voltage measured at the internal resolver supply is less than a calibrated value.
Sensor Power Supply 2 Circuit High  - The voltage measured at the internal resolver supply is greater than a calibrated value.
Sensor 2 Circuit Faults  - The Hybrid Control Processor (HCP) does not detect Electric Motor B resolver signal.
Sensor Circuit Intermittent Fault  - The Hybrid Control Processor (HCP) does not detect Electric Motor B resolver signal or the signal is intermittent.
Sensor Circuit 2 Overspeed Fault  - The Hybrid Control Processor (HCP) does not detect Electric Motor B resolver signal.
Drive Motor B Performance Fault  - The Hybrid Control Processor (HCP) does not detect Electric Motor B resolver signal.
MCPB Rationality Fault  - The Hybrid Control Processor (HCP) does not detect Electric Motor B resolver signal.
DEFAULT AND LIMP-IN ACTIONS
Sensor Power Supply 2 Circuit Low  - Malfunction Indicator Lamp (MIL) on. Loss of motor functionality.
Sensor Power Supply 2 Circuit High  - Malfunction Indicator Lamp (MIL) on. Loss of motor functionality.
Sensor 2 Circuit Fault  - Malfunction Indicator Lamp (MIL) on. Disable Engine Stop/Start (ESS).
Sensor Circuit Intermittent Fault  - Malfunction Indicator Lamp (MIL) on. Disable Engine Stop/Start (ESS).
Sensor Circuit 2 Overspeed Fault  - Malfunction Indicator Lamp (MIL) on. Service High Voltage System (SHVS) warning lamp on. De-rate Electric Motor.
Drive Motor B Performance Fault  - Malfunction Indicator Lamp (MIL) on. Power Inverter Module (PIM) shutdown.
MCPB Rationality Fault  - Malfunction Indicator Lamp (MIL) on. Power Inverter Module (PIM) shutdown.
POSSIBLE CAUSES
RESOLVER HARNESS CONNECTOR DAMAGED OR NOT CONNECTED COMPLETELY
RESOLVER HARNESS CONNECTOR TERMINAL(S) - POOR TERMINAL CONNECTION OR TERMINAL PUSH-OUT
RESOLVER B SINE HI CIRCUIT OPEN OR HIGH RESISTANCE
RESOLVER B SINE LO CIRCUIT OPEN OR HIGH RESISTANCE
RESOLVER B COS HI CIRCUIT OPEN OR HIGH RESISTANCE
RESOLVER B COS LO CIRCUIT OPEN OR HIGH RESISTANCE
RESOLVER B EXCITATION HI CIRCUIT OPEN OR HIGH RESISTANCE
RESOLVER B EXCITATION HI CIRCUIT OPEN OR HIGH RESISTANCE
RESOLVER B SINE HI CIRCUIT SHORTED TO GROUND OR ANOTHER CIRCUIT
RESOLVER B SINE LO CIRCUIT SHORTED TO GROUND OR ANOTHER CIRCUIT
RESOLVER B COS HI CIRCUIT SHORTED TO GROUND OR ANOTHER CIRCUIT
RESOLVER B COS LO CIRCUIT SHORTED TO GROUND OR ANOTHER CIRCUIT
RESOLVER B EXCITATION HI CIRCUIT SHORTED TO GROUND OR ANOTHER CIRCUIT
RESOLVER B EXCITATION HI CIRCUIT SHORTED TO GROUND OR ANOTHER CIRCUIT
FAULTY RESOLVER (OPEN, SHORTED OR DRIFTED OUT OF RANGE)
FAULTY ELECTRONIC CONTROL UNIT (ECU)