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Home >> Oldsmobile >> 1999 >> Cutlass GL, 3.1 M >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Analog >> Self Diagnostic System >> Diagnostic System Check

Diagnostic System Check

  1. Connect scan tool to Data Link Connector(DLC). Using scan tool, read Instrument Panel Cluster (IPC) information. If comminucation does not exist, go to next step. If comminucation exists, go to step  3 .
  2. Check all IPC power and ground wiring and connectors. See INSTRUMENT CLUSTER INOPERATIVE  under SYMPTOM TESTS.
  3. Check for DTCs. If no DTCs exist, go to next step. If DTCs exist, see IPC DTC DEFINITIONS  table.
  4. Using scan tool in WOW mode, check operation of IPC gauges and indicators. If all IPC gauges and indicators are okay, check is complete. If any IPC gauges or indicators do not operate properly, go to next step.
  5. Replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
IPC DTC DEFINITIONS

DTC Definition
Automatic Light Control(1)
B2575 Headlight Control Circuit Malfunction
B2577 Headlight Control Circuit Low
B2578 Headlight Relay Output Short To Power
B2585 Parking Lights Control Circuit Malfunction
B2587 Parking Lights Relay Output Short To Ground
B2588 Parking Lights Relay Output Short To Power
B2647 Ambient Light Sensor Circuit Low
B2548 Ambient light Sensor Circuit High
Class 2 Serial Data(1)
U1000 Serial Data Link Malfunction
U1016 Communication Loss With PCM
U1040 Communication Loss (Class 2) With ABS
U1064 Communication Loss With BCM
U1300 Serial Data Link Low
U1301 Serial Data Link High
Controller Memory(2)
B1001 Option Configuration Error
Daytime Running Lights (DRL)(3)
B2600 DRL Circuit Malfunction
B2602 DRL Relay Output Open/Short To Ground
B2603 DRL Relay Output Short To Power
Foglights(3)
B2532 Foglight Relay Output Open/Short To Ground
B2533 Foglight Relay Output Short To Power
Fuel Sending Unit(2)
P0462 Sensor Shorted To Ground
P0463 Sensor Open/Shorted To Power
Interior Lighting Control(2)
B2558 Control Output Short To Power
Inputs(4)
B2965 Key In Ignition Fault
B1369 Ignition 0 Fault
B1374 Ignition 1 Fault
B1379 Ignition 3 Fault
Passlock(tm) System (4)
B2947 System Sensor Power Circuit Low
B2948 System Sensor Power Circuit High
B2957 System Sensor Data Circuit Low
B2958 System Sensor Data Circuit High
B2960 Invalid Coded Key Present
B3031 Key Decoder Device In Learn Mode
B3033 System Indicates Tamper
Serial Preipheral Interface (SPI)(1)
U2000 Invalid BFC Transmitted SPI Data
U2001 Invalid IPC Transmitted SPI Data
U2002 SPI Data In Low
U2003 SPI Data In High
U2004 SPI Data Out Low
U2005 SPI Data Out High
U2006 SPI Clock Out Low
U2007 SPI Clock Out High
Volts Telltale(1)
B1487 GEN "L" Terminal Low (Engine Running)
B1488 GEN "L " Term High
B1492 GEN "F" Term Low
B1493 GEN "F" Term High
(1) See appropriate BODY CONTROL MODULES article.
(2) See appropriate test under DIAGNOSTIC TESTS  .
(3) See appropriate HEADLIGHTS & DAYTIME RUNNING LIGHTS article in WIRING DIAGRAMS.
(4) See appropriate ANTI-THEFT SYSTEMS article.
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