Symptom Troubleshooting Chart - Instrument Cluster: Notes

Problem	Possible Cause	Action
No communication with the instrument cluster	Smart junction box (SJB) fuse(s): 9 (5A) 10 (7.5A) 33 (5A) Battery junction box (BJB) fuse(s): 3 (50A) 9(40A) Circuitry Instrument cluster Standard Corporate Protocol (SCP) network Controller Area Network (CAN) network	See INSTRUMENT CLUSTER PINPOINT TEST 1: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER .
Incorrect fuel gauge indication	Circuitry Fuel level sender Fuel tank Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 21: INCORRECT FUEL GAUGE INDICATION .
Incorrect temperature gauge indication	Circuitry Water temperature indicator sender unit Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 2: INCORRECT TEMPERATURE GAUGE INDICATION .
Incorrect oil pressure warning lamp indication	Circuitry Oil pressure switch Instrument cluster Warning lamp bulb	See INSTRUMENT CLUSTER PINPOINT TEST 3: INCORRECT OIL PRESSURE WARNING LAMP INDICATION .
Inaccurate speedometer reading	Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 4: INACCURATE SPEEDOMETER READING .
The speedometer/odometer is inoperative	Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 5: SPEEDOMETER/ODOMETER IS INOPERATIVE .
The tachometer is inoperative	Powertrain control module (PCM) Circuitry Instrument cluster	See INSTRUMENT CLUSTER INSTRUMENT CLUSTER PINPOINT TEST 6: TACHOMETER IS INOPERATIVE .
The charge system warning indicator is never on	Smart junction box (SJB) fuse 10(10A) Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 7: CHARGE SYSTEM WARNING INDICATOR IS NEVER ON .
The charge system warning indicator is always on	Charging system	See SYMPTOM TROUBLESHOOTING CHART - CHARGING SYSTEM to continue diagnosis of the charging system.
The low fuel level warning indicator is never/always on	Instrument cluster	Check for correct operation of the fuel gauge. See INSTRUMENT CLUSTER PINPOINT TEST 1: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER . If the fuel gauge operates correctly, Install a new instrument cluster. See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .
The anti-lock brake warning indicator is never/always on	Circuitry Instrument cluster Anti-lock brake system (ABS) module	See INSTRUMENT CLUSTER PINPOINT TEST 8: ANTI-LOCK BRAKE WARNING INDICATOR IS NEVER ON/ALWAYS ON .
The check fuel cap indicator is never on	Powertrain control module (PCM) Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 9: CHECK FUEL CAP INDICATOR IS NEVER ON .
The check fuel cap indicator is always on	Powertrain control module (PCM) Circuitry	See EVAPORATIVE EMISSION SYMPTOM CHART .
The high beam indicator is never on	Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 10: HIGH BEAM INDICATOR IS NEVER ON .
The check engine/malfunction indicator lamp (MIL) indicator is never on	Circuitry Instrument cluster Powertrain control module (PCM)	See INSTRUMENT CLUSTER PINPOINT TEST 11: CHECK ENGINE/MALFUNCTION INDICATOR LAMP (MIL) INDICATOR IS INOPERATIVE .
The check engine/malfunction indicator lamp MIL indicator is always on	Powertrain/emissions concern	see Engine On-Board Diagnosis and Diagnostic Trouble Code Numbers for on-board diagnostic information and Diagnostic Index for engine symptom troubleshooting concerns in SYMPTOM TROUBLESHOOTING CHART - ENGINE MECHANICAL .
The LH turn signal indicator is never on	Bulb Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 12: LH TURN SIGNAL INDICATOR IS NEVER ON .
The RH turn signal indicator is never on	Bulb Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 13: RH TURN SIGNAL INDICATOR IS NEVER ON .
The O/D OFF indicator is never on	Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 14: O/D OFF INDICATOR IS INOPERATIVE .
The O/D OFF indicator is always on	Circuitry Powertrain control module (PCM)	See AUTOMATIC TRANSMISSION EXTERNAL CONTROLS DIAGNOSIS .
The speed control indicator is always on	Circuitry Speed control servo	See SYMPTOM TROUBLESHOOTING CHART - CRUISE CONTROL .
The speed control indicator is never on	Bulb Circuitry Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 15: SPEED CONTROL INDICATOR IS NEVER ON .
The brake warning indicator is always/never on	Circuitry Parking brake switch Brake fluid level switch Instrument cluster Anti-lock brake system (ABS) module	See INSTRUMENT CLUSTER PINPOINT TEST 16: BRAKE WARNING INDICATOR IS NEVER ON/ALWAYS ON .
The door ajar indicator is always/never on	Circuitry Smart junction box (SJB) Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 17: DOOR AJAR WARNING INDICATOR DOES NOT OPERATE CORRECTLY .
The safety belt warning indicator is always/never on	Circuitry Smart junction box (SJB) Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 18: SAFETY BELT WARNING INDICATOR IS ALWAYS/NEVER ON .
The 4x4 and the 4x4 LOW indicator is never on	Circuitry Control module Instrument cluster	See INSTRUMENT CLUSTER PINPOINT TEST 19: 4X4 HIGH AND 4X4 LOW INDICATOR IS NEVER ON .
The air bag warning indicator is never on	Circuitry Instrument cluster Restraint control module (RCM)	See INSTRUMENT CLUSTER PINPOINT TEST 20: AIR BAG INDICATOR IS NEVER/ALWAYS ON .
The air bag indicator is always on	Circuitry Instrument cluster Restraint control module (RCM)	See AIR BAG SYSTEM ON - BOARD DIAGNOSIS .