System Operation Check

Trouble shooting of an combination meter system complaint begins with verification of the customer problem. Perform the Customer Problem Analysis. See Fig 1. If the problem occurs, go to step 3. If the problem does not occur, go to the next step.
If problem does not occur, review conditions under which problem occurred for customer and try to duplicate those conditions. For example, if the problem occurs on rainy days or during high humidity conditions, sprinkle water onto vehicle and see if malfunction occurs. DO NOT sprinkle water directly into engine compartment or onto electronic components. Visually inspect for signs of mechanical and electrical damage. Inspect for blown fuses and damaged relays. Inspect for loose or corroded connections, damaged wiring harness and/or switches. Check for a broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. Ensure any aftermarket electronic equipment is properly installed. If fault is found, repair as necessary. If problem still cannot be created, go to FUNCTION TESTS .

Determine problem symptom. See COMBINATION METER PROBLEM SYMPTOMS table.

COMBINATION METER PROBLEM SYMPTOMS

Symptom

Suspected Area ⁽¹⁾

Indicator Lights

VSC Indicator Light Does Not Light Up

⁽²⁾⁽³⁾⁽⁴⁾

Shift Indicator Light Does Not Light Up

⁽²⁾⁽⁵⁾⁽⁴⁾

Turn Indicator Light Does Not Light Up

⁽²⁾⁽⁶⁾⁽⁴⁾

High Beam Indicator Light Does Not Light Up

⁽²⁾⁽⁷⁾⁽⁴⁾

TRAC OFF Indicator Light Does Not Light Up

⁽²⁾⁽⁸⁾⁽³⁾⁽⁴⁾

SLIP Indicator Light Does Not Light Up

⁽²⁾⁽³⁾⁽⁴⁾

Meter Gauges

Tachometer, Fuel Gauge & Water Temperature Gauge Do Not Operate

⁽²⁾⁽⁹⁾⁽⁴⁾

Fuel Gauge Does Not Operate Or Abnormal Operation

⁽²⁾⁽¹⁰⁾⁽⁴⁾

Warning Lights & Buzzer

Charge Warning Light Does Not Light Up

⁽²⁾⁽¹¹⁾⁽⁴⁾

Check Engine Warning Light Does Not Light Up

⁽²⁾⁽¹²⁾⁽⁴⁾

Brake Warning Light Does Not Light Up

⁽²⁾⁽¹³⁾⁽¹⁴⁾⁽³⁾⁽⁴⁾

ABS Warning Light Does Not Light Up

⁽²⁾⁽³⁾⁽¹⁵⁾⁽⁴⁾

SRS Warning Light Does Not Light Up

⁽²⁾⁽¹⁶⁾⁽⁴⁾

Open Door Warning Light Does Not Light Up

⁽²⁾⁽¹⁷⁾⁽¹⁸⁾⁽⁴⁾

Headlight Leveling Warning Light Does Not Light Up

⁽²⁾⁽¹⁹⁾⁽⁴⁾

Fuel Level Warning Light Does Not Light Up

⁽²⁾⁽²⁰⁾⁽⁴⁾

Low Oil Pressure Warning Light Does Not Light Up

⁽²⁾⁽²¹⁾⁽⁴⁾

Window Washer Level Warning Does Not Light Up

⁽²⁾⁽²²⁾⁽⁴⁾

⁽¹⁾	Perform test procedures in order listed under suspected area.

⁽²⁾	Check the wiring harness or connector.

⁽³⁾	Check the skid control ECU. See step 2 of TEST A: MALFUNCTION IN SPEEDOMETER under SYSTEM TESTS.

⁽⁴⁾	Check the instrument panel assembly.

⁽⁵⁾	Check the neutral start switch circuit.

⁽⁶⁾	Check the turn signal and hazard warning system. See STEERING COLUMN SWITCHES article.

⁽⁷⁾	Check the headlight dimmer switch. See STEERING COLUMN SWITCHES article.

⁽⁸⁾	Check the TRAC OFF switch circuit. See ANTI-LOCK - ES 300 article in BRAKES.

⁽⁹⁾	Check GAUGE fuse.

⁽¹⁰⁾	Check fuel receiver gauge. See step 4 of INSTRUMENT PANEL ON-VEHICLE INSPECTION under FUNCTION TESTS.

⁽¹¹⁾	Check the generator.

⁽¹²⁾	Check the ECM.

⁽¹³⁾	Check the parking brake switch.

⁽¹⁴⁾	Check the brake fluid level switch. See step 9 of INSTRUMENT PANEL ON-VEHICLE INSPECTION under FUNCTION TESTS.

⁽¹⁵⁾	Check the skid control ECU with actuator. See 3 of TEST A: MALFUNCTION IN SPEEDOMETER under SYSTEM TESTS.

⁽¹⁶⁾	Check the air bag sensor assembly. See AIR BAG RESTRAINT SYSTEMS .

⁽¹⁷⁾	Check the door courtesy light switch. See POWER DOOR LOCKS, TRUNK LID & FUEL DOOR RELEASE article in DOOR LOCKS & ANTI-THEFT SYSTEMS.

⁽¹⁸⁾	Check the multiplex communication system (MPX) body ECU. See MULTIPLEX COMMUNICATION SYSTEMS article in COMMUNICATION DEVICES.

⁽¹⁹⁾	Check the headlight leveling ECU. See AUTOMATIC HEADLIGHTS article in HEADLIGHTS.

⁽²⁰⁾	Check the fuel sender gauge.

⁽²¹⁾	Check the low oil pressure warning switch. See step 7 of INSTRUMENT PANEL ON-VEHICLE INSPECTION under FUNCTION TESTS.

⁽²²⁾	Check the window washer level warning switch. See WIPER/WASHER SYSTEMS article.

Perform appropriate circuit inspection. See SYMPTOM INDEX table.
Make necessary repairs or replacements.
After repairs have been completed, confirm that the problem has been eliminated. Operate the system under the same conditions recorded for the original complaint. If the problem is no longer present, repair has corrected the problem. If the problem is still present, further diagnosis and repair is required.

Fig 1: Customer Problem Analysis (Instrument Panel System Check)