Note. To locate components, see COMPONENT LOCATIONS . For circuit reference, see WIRING DIAGRAMS . For connector terminal identification, see CONNECTOR IDENTIFICATION . For intermittent conditions, see INTERMITTENT CONDITIONS . If testing requires component removal or replacement, see appropriate REMOVAL & INSTALLATION article.
Home/Chevrolet/Suburban/Chevrolet Suburban X (2000-2006)/Repair manual/Testing & Diagnostics/DTC P0650: MALFUNCTION INDICATOR LAMP CONTROL CIRCUIT
Contents
Wiring diagrams Section: Testing & Diagnostics- Engine Controls - Basic Diagnostic Procedures - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline Engines: Overview
- Engine Controls - Basic Diagnostic Procedures - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline Engines: Diagnosis
- Engine Controls - Basic Diagnostic Procedures - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline Engines: Other
- Engine Controls - Basic Diagnostic Procedures - 8.1L: Overview
- Engine Controls - Basic Diagnostic Procedures - 8.1L: Diagnosis
- Engine Controls - Basic Diagnostic Procedures - 8.1L: Other
- Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L: Overview
- Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L: Diagnosis
- Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L: Wiring
- Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L: NVH
- Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L: Other
- Engine Controls - Trouble Shooting - No Codes - 8.1L: Diagnosis
- Engine Controls - Trouble Shooting - No Codes - 8.1L: Wiring
- Engine Controls - Trouble Shooting - No Codes - 8.1L: NVH
- Engine Controls - Trouble Shooting - No Codes - 8.1L: Other
- Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Specifications
- Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Overview
- Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Diagnosis
- Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Wiring
- Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Component Locations
- Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Other
- Engine Controls - System & Component Testing - 8.1L: Specifications
- Engine Controls - System & Component Testing - 8.1L: Overview
- Engine Controls - System & Component Testing - 8.1L: Diagnosis
- Engine Controls - System & Component Testing - 8.1L: Wiring
- Engine Controls - System & Component Testing - 8.1L: Component Locations
- Engine Controls - System & Component Testing - 8.1L: Other
- Engine Controls - Self-Diagnostics - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Maintenance
- Engine Controls - Self-Diagnostics - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Wiring
- Engine Controls - Self-Diagnostics - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Component Locations
- Engine Controls - Self-Diagnostics - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: NVH
- Engine Controls - Self-Diagnostics - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline: Other
- DTC P0101: MASS AIR FLOW SENSOR PERFORMANCE
- DTC P0102: MAF SENSOR CIRCUIT - LOW FREQUENCY
- DTC P0103: MAF SENSOR CIRCUIT - HIGH FREQUENCY
- DTC P0106: MAP SYSTEM PERFORMANCE
- DTC P0107: MAP SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0108: MAP SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0112: IAT SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0113: IAT SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0116: ECT SENSOR PERFORMANCE
- DTC P0117: ECT SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0118: ECT SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0120: TP SENSOR CIRCUIT
- DTC P0125: EXCESSIVE TIME TO ENTER CLOSED LOOP FUEL CONTROL
- DTC P0128: ECT LESS THAN THERMOSTAT REGULATING TEMPERATURE
- DTC P0131: HO2S CIRCUIT - LOW VOLTAGE - BANK 1, SENSOR 1 & DTC P0151: HO2S CIRCUIT - LOW VOLTAGE - BANK 2, SENSOR 1
- DTC P0132: HO2S CIRCUIT - HIGH VOLTAGE - BANK 1, SENSOR 1 & DTC P0152: HO2S CIRCUIT - HIGH VOLTAGE - BANK 2, SENSOR 1
- DTC P0133: HO2S CIRCUIT - SLOW RESPONSE - BANK 1, SENSOR 1 & DTC P0153: HO2S CIRCUIT - SLOW RESPONSE - BANK 2, SENSOR 1
- DTC P0134: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 1, SENSOR 1 & DTC P0154: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 2, SENSOR 1
- DTC P0135: HO2S HEATER CIRCUIT - BANK 1, SENSOR 1 & DTC P0155: HO2S HEATER CIRCUIT - BANK 2, SENSOR 1
- DTC P0137: HO2S CIRCUIT - LOW VOLTAGE - BANK 1, SENSOR 2 & DTC P0157: HO2S CIRCUIT - LOW VOLTAGE - BANK 2, SENSOR 2
- DTC P0138: HO2S CIRCUIT - HIGH VOLTAGE - BANK 1, SENSOR 2 & DTC P0158: HO2S CIRCUIT - HIGH VOLTAGE - BANK 2, SENSOR 2
- DTC P0140: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 1, SENSOR 2 & DTC P0160: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 2, SENSOR 2
- DTC P0141: HO2S HEATER CIRCUIT - BANK 1, SENSOR 2 & DTC P0161: HO2S HEATER CIRCUIT - BANK 2, SENSOR 2
- DTC P0169: FUEL COMPOSITION SENSOR - HIGH ALCOHOL CONTENT DETECTED (5.3L FLEX-FUEL)
- DTC P0171: FUEL TRIM SYSTEM LEAN - BANK 1 & DTC P0174: FUEL TRIM SYSTEM LEAN - BANK 2
- DTC P0172: FUEL TRIM SYSTEM RICH - BANK 1 & DTC P0175: FUEL TRIM SYSTEM RICH - BANK 2
- DTC P0178: FUEL COMPOSITION SENSOR CIRCUIT LOW VOLTAGE (5.3L FLEX-FUEL)
- DTC P0179: FUEL COMPOSITION SENSOR CIRCUIT HIGH VOLTAGE (5.3L FLEX-FUEL)
- DTC P0200: FUEL INJECTOR CONTROL CIRCUIT
- DTC P0220: THROTTLE POSITION SENSOR 2 CIRCUIT
- DTC P0230: FUEL PUMP CONTROL RELAY CIRCUIT
- DTC P0300: ENGINE MISFIRE DETECTED
- DTC P0315: CRANKSHAFT POSITION SENSOR VARIATION NOT LEARNED
- DTC P0325: KNOCK SENSOR MODULE CIRCUIT
- DTC P0327: KNOCK SENSOR CIRCUIT - LOW VOLTAGE - SENSOR 1 & DTC P0332: KNOCK SENSOR CIRCUIT - LOW VOLTAGE - SENSOR 2
- DTC P0335: CRANKSHAFT POSITION SENSOR CIRCUIT
- DTC P0336: CRANKSHAFT POSITION SENSOR CIRCUIT PERFORMANCE
- DTC P0341: CAMSHAFT POSITION SENSOR CIRCUIT PERFORMANCE
- DTC P0342: CAMSHAFT POSITION SENSOR - SIGNAL LOW
- DTC P0343: CAMSHAFT POSITION SENSOR - SIGNAL HIGH
- DTC P0351-P0358: IGNITION CONTROL CIRCUIT
- DTC P0420: TWC SYSTEM - LOW EFFICIENCY - BANK 1 & DTC P0430: TWC SYSTEM - LOW EFFICIENCY - BANK 2
- DTC P0442: EVAP SYSTEM - SMALL LEAK
- DTC P0443: EVAP PURGE SOLENOID CONTROL CIRCUIT
- DTC P0446: EVAP VENT CONTROL CIRCUIT
- DTC P0449: EVAP VENT SOLENOID VALVE CONTROL CIRCUIT
- DTC P0452: FUEL TANK PRESSURE SENSOR - LOW VOLTAGE
- DTC P0453: FUEL TANK PRESSURE SENSOR - HIGH VOLTAGE
- DTC P0455: EVAP SYSTEM LEAK DETECTED - GROSS LEAK/NO FLOW
- DTC P0496: EVAP SYSTEM HIGH PURGE FLOW
- DTC P0506: IDLE CONTROL SYSTEM - LOW RPM
- DTC P0507: IDLE CONTROL SYSTEM - HIGH RPM
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 & P2610: PCM MEMORY
- DTC P0641: 5-VOLT REFERENCE CIRCUIT OUT OF RANGE
- DTC P0650: MIL CONTROL CIRCUIT
- DTC P0651: SENSOR REFERENCE VOLTAGE CIRCUIT
- DTC P1106: MAP SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE
- DTC P1107: MAP SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE
- DTC P1111: IAT SENSOR CIRCUIT - INTERMITTENT HIGH VOLTAGE
- DTC P1112: IAT SENSOR CIRCUIT - INTERMITTENT LOW VOLTAGE
- DTC P1114: ECT SENSOR CIRCUIT - INTERMITTENT LOW VOLTAGE
- DTC P1115: ECT SENSOR CIRCUIT - INTERMITTENT HIGH VOLTAGE
- DTC P1125: ACCELERATOR PEDAL POSITION SENSORS OUT OF RANGE OR DISAGREE
- DTC P1133: HO2S CIRCUIT - INSUFFICIENT SWITCHING - BANK 1, SENSOR 1 & DTC P1153: HO2S CIRCUIT - INSUFFICIENT SWITCHING - BANK 2, SENSOR 1
- DTC P1172: SECONDARY FUEL PUMP TRANSFER MALFUNCTION
- DTC P1258: ENGINE OVER-TEMPERATURE CONDITION
- DTC P1380: EBCM DTC DETECTED ROUGH ROAD DATA UNSTABLE
- DTC P1381: MISFIRE DETECTED - NO EBCM/PCM SERIAL DATA
- DTC P1514: CALCULATED VS ACTUAL AIRFLOW CORRELATION HIGH
- DTC P1515: PREDICTED VS ACTUAL THROTTLE POSITION CORRELATION ERROR
- DTC P1516: PREDICTED VS ACTUAL THROTTLE POSITION CORRELATION ERROR
- DTC P1517: TAC MODULE PROCESSOR FAULT
- DTC P1518: TAC MODULE SERIAL DATA FAULT
- DTC P2108: TAC MODULE PROCESSOR FAULT
- DTC P2120: APP SENSOR 1 CIRCUIT MALFUNCTION
- DTC P2121: APP SENSOR CIRCUITS OUT OF CORRELATION
- DTC P2125: APP SENSOR 2 CIRCUIT MALFUNCTION
- DTC P2135: TP SENSOR SIGNALS 1 & 2 DISAGREE OR OUTSIDE PREDETERMINED RANGE
- Engine Controls - Self Diagnostics - 8.1L: Maintenance
- Engine Controls - Self Diagnostics - 8.1L: Wiring
- Engine Controls - Self Diagnostics - 8.1L: Component Locations
- Engine Controls - Self Diagnostics - 8.1L: NVH
- Engine Controls - Self Diagnostics - 8.1L: Other
- DTC P0101: MASS AIR FLOW SENSOR PERFORMANCE
- DTC P0102: MASS AIR FLOW SENSOR CIRCUIT - LOW FREQUENCY
- DTC P0103: MASS AIR FLOW SENSOR CIRCUIT - HIGH FREQUENCY
- DTC P0106: MAP SYSTEM PERFORMANCE
- DTC P0107: MAP SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0108: MAP SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0112: IAT SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0113: IAT SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0116: ECT SENSOR PERFORMANCE (SIERRA & SILVERADO)
- DTC P0116: ECT SENSOR PERFORMANCE (AVALANCHE, SUBURBAN & YUKON XL)
- DTC P0117: ECT SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0118: ECT SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0120: TP SENSOR CIRCUIT
- DTC P0125: EXCESSIVE TIME TO ENTER CLOSED LOOP FUEL CONTROL (SIERRA & SILVERADO)
- DTC P0128: ECT LESS THAN THERMOSTAT REGULATING TEMPERATURE (SIERRA & SILVERADO)
- DTC P0131: HO2S CIRCUIT - LOW VOLTAGE - BANK 1, SENSOR 1 & DTC P0151: HO2S CIRCUIT - LOW VOLTAGE - BANK 2, SENSOR 1
- DTC P0132: HO2S CIRCUIT - HIGH VOLTAGE - BANK 1, SENSOR 1 & DTC P0152: HO2S CIRCUIT - HIGH VOLTAGE - BANK 2, SENSOR 1
- DTC P0133: HO2S CIRCUIT - SLOW RESPONSE - BANK 1, SENSOR 1 & DTC P0153: HO2S CIRCUIT - SLOW RESPONSE - BANK 2, SENSOR 1
- DTC P0134 & P0154: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 1 & 2, SENSOR 1
- DTC P0135: HO2S HEATER CIRCUIT - BANK 1, SENSOR 1, DTC P0141: HO2S HEATER CIRCUIT - BANK 1, SENSOR 2, DTC P0155: HO2S HEATER CIRCUIT - BANK 2, SENSOR 1 & DTC P0161: HO2S HEATER CIRCUIT - BANK 2, SENSOR 2
- DTC P0137: HO2S CIRCUIT - LOW VOLTAGE - BANK 1, SENSOR 2 & DTC P0157: HO2S CIRCUIT - LOW VOLTAGE - BANK 2, SENSOR 2
- DTC P0138: HO2S CIRCUIT - HIGH VOLTAGE - BANK 1, SENSOR 2 & DTC P0158: HO2S CIRCUIT - HIGH VOLTAGE - BANK 2, SENSOR 2
- DTC P0140: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 1, SENSOR 2 & DTC P0160: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - BANK 2, SENSOR 2
- DTC P0171: FUEL TRIM SYSTEM LEAN - BANK 1 & DTC P0174: FUEL TRIM SYSTEM LEAN - BANK 2
- DTC P0172: FUEL TRIM SYSTEM RICH - BANK 1 & DTC P0175: FUEL TRIM SYSTEM RICH - BANK 2
- DTC P0200: FUEL INJECTOR CONTROL CIRCUIT
- DTC P0220: THROTTLE POSITION SENSOR 2 CIRCUIT
- DTC P0230: FUEL PUMP CONTROL RELAY CIRCUIT
- DTC P0300: ENGINE MISFIRE DETECTED
- DTC P0325: KNOCK SENSOR MODULE CIRCUIT
- DTC P0327: KNOCK SENSOR CIRCUIT - LOW VOLTAGE - SENSOR 1 & DTC P0332: KNOCK SENSOR CIRCUIT - LOW VOLTAGE - SENSOR 2
- DTC P0335: CRANKSHAFT POSITION SENSOR CIRCUIT
- DTC P0336: CRANKSHAFT POSITION SENSOR CIRCUIT PERFORMANCE
- DTC P0341: CAMSHAFT POSITION SENSOR CIRCUIT PERFORMANCE
- DTC P0342: CAMSHAFT POSITION SENSOR SIGNAL LOW
- DTC P0343: CAMSHAFT POSITION SENSOR SIGNAL HIGH
- DTC P0351-P0358: IGNITION CONTROL CIRCUIT
- DTC P0420: : TWC SYSTEM - LOW EFFICIENCY - BANK 1 & DTC P0430: TWC SYSTEM - LOW EFFICIENCY - BANK 2
- DTC P0442: EVAP SYSTEM - SMALL LEAK
- DTC P0443: EVAP PURGE SOLENOID CONTROL CIRCUIT
- DTC P0446: EVAP VENT VALVE PERFORMANCE
- DTC P0449: EVAP VENT VALVE PERFORMANCE
- DTC P0452: FUEL TANK PRESSURE SENSOR - LOW VOLTAGE
- DTC P0453: FUEL TANK PRESSURE SENSOR - HIGH VOLTAGE
- DTC P0455: EVAP SYSTEM LEAK DETECTED - GROSS LEAK/NO FLOW
- DTC P0496: EVAP SYSTEM HIGH PURGE FLOW
- DTC P0506: IDLE CONTROL SYSTEM - RPM LOW & DTC P0507: IDLE CONTROL SYSTEM - RPM HIGH
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 & P2610: PCM MEMORY
- DTC P0650: MALFUNCTION INDICATOR LAMP CONTROL CIRCUIT
- DTC P1111: INTAKE AIR TEMPERATURE SENSOR CIRCUIT - INTERMITTENT HIGH VOLTAGE
- DTC P1112: INTAKE AIR TEMPERATURE SENSOR CIRCUIT - INTERMITTENT LOW VOLTAGE
- DTC P1114: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT - INTERMITTENT LOW VOLTAGE
- DTC P1115: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT - INTERMITTENT HIGH VOLTAGE
- DTC P1125: ACCELERATOR PEDAL POSITION SENSORS OUT OF RANGE OR DISAGREE
- DTC P1133: HO2S CIRCUIT - INSUFFICIENT SWITCHING - BANK 1, SENSOR 1 & DTC P1153: HO2S CIRCUIT - INSUFFICIENT SWITCHING - BANK 2, SENSOR 1
- DTC P1172: SECONDARY FUEL PUMP TRANSFER MALFUNCTION
- DTC P1258
- DTC P1380: EBCM DTC DETECTED ROUGH ROAD DATA UNSTABLE
- DTC P1381: MISFIRE DETECTED - NO EBCM/PCM SERIAL DATA
- DTC P1404: EGR VALVE CLOSED PINTLE POSITION
- DTC P1514: AIRFLOW RATE EXCESSIVE
- DTC P1515: PREDICTED VS ACTUAL THROTTLE POSITION CORRELATION ERROR
- DTC P1516: PREDICTED VS ACTUAL THROTTLE POSITION CORRELATION ERROR
- DTC P1518: THROTTLE ACTUATOR CONTROL MODULE SERIAL DATA FAULT
- DTC P2108: THROTTLE ACTUATOR CONTROL MODULE CIRCUIT FAULT
- DTC P2120: APP SENSOR 1 SIGNAL OR APP SENSOR 5-VOLT REFERENCE OUT OF RANGE
- DTC P2121: APP SENSOR 1 SIGNAL AND APP SENSOR 2 SIGNAL CIRCUITS OUT OF CORRELATION
- DTC P2125: APP SENSOR 2 SIGNAL OR APP SENSOR 5-VOLT REFERENCE OUT OF RANGE
- DTC P2135: TP SENSORS NO. 1 & 2 SIGNALS DISAGREE OR SIGNAL VOLTAGES OUT OF RANGE
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