Testing

Initiate instrument cluster self-diagnostic by depressing the odometer/trip reset button while turning the ignition key to the OFF/RUN/START position. This will cycle an electronic display segment check and illumination in sequence of all CCD bus activated cluster warning indicators. There are four Check (CHEC) functions:

1. CHEC 1, checks the gauges.
2. CHEC 2, checks the warning lamps.
3. CHEC 3, checks the odometer/trip meter.
4. CHEC 4, Transmission Range Indicator for the automatic transmission or the autostick transmission.

If the diagnostic procedure determines that a replacement of an instrument cluster component is required, refer to the proper component removal procedure.

CHEC 1 = GAUGE DISPLAY
TACHOMETER = 6000 rpm
SPEEDOMETER = 100mph (220 km/h)
FUEL GAUGE pointer ON = F
TEMPERATURE GAUGE pointer ON = H

TACHOMETER = 3000 rpm
SPEEDOMETER = 75mph (120 km/h)
FUEL GAUGE pointer ON = 1/2
TEMPERATURE GAUGE pointer ON = midscale

TACHOMETER = 3000 rpm
SPEEDOMETER = 55mph (100 km/h)
FUEL GAUGE pointer ON = 1/2
TEMPERATURE GAUGE pointer ON = midscale

TACHOMETER = 1000 rpm
SPEEDOMETER = 20mph (40 km/h)
FUEL GAUGE pointer ON = E
TEMPERATURE GAUGE pointer ON = C

CHEC 1
1. If all gauges fail to move, replace Cluster Printed Circuit (PC) Board.
2. If any gauge fails to move, replace the gauge assembly
3. If any gauge(s) is not in the proper position, replace Cluster Printed Circuit Board.

CHEC 2 - WARNING LAMP DISPLAY
SERVICE ENGINE SOON
SEAT BELT
AIRBAG
CHARGING SYSTEM
LOW FUEL
HIGH BEAM INDICATOR
ENGINE TEMPERATURE
CRUISE

CHEC 2
1. If any lamp does not light, check lamp.
2. If lamp is not OK, replace lamp.
3. If lamp is OK, replace Cluster Printed Circuit Board.

CHEC 3 - VACUUM FLORESCENT (VF) DISPLAY
TRIP
ODOMETER CENTER
ODOMETER LOWER RIGHT
ODOMETER BOTTOM
ODOMETER LOWER LEFT
ODOMETER UPPER LEFT
ODOMETER TOP
ODOMETER UPPER RIGHT
ALL ODOMETER V/F DISPLAY DIGIT SEGMENTS ON

CHEC 3
If any V/F segment does not light, replace Odometer/Transmission Range Indication.

CHEC 4 - TRANSMISSION RANGE RANGE V/F DISPLAY
AUTOMATIC TRANSMISSION
PRND3L
PRND3L AND BOX AROUND P
PRND3L AND BOX AROUND R
PRND3L AND BOX AROUND N
PRND3L AND BOX AROUND D
PRND3L AND BOX AROUND 3
PRND3LAND BOX AROUND L
PRND3L AND ALL BOXES
END

CHEC 4- AUTOMATIC TRANSMISSION
If any V/F segment does not light, replace Odometer/Transmission Range Indication.

CHEC 4 - TRANSMISSION RANGE INDICATOR
V/F DISPLAY
AUTOSTICK
PRND A/S 1 AND A/S BOX
PRND A/S 2 AND A/S BOX
PRND A/S 3 AND A/S BOX
PRND A/S 4 AND A/S BOX
PRND A/S AND BOX AROUND P
PRND A/S AND BOX AROUND R
PRND A/S AND BOX AROUND N
PRND A/S AND BOX AROUND D
PRND A/S 1234 AND ALL BOXES
END

CHEC 4- AUTOMATIC TRANSMISSION
If any V/F segment does not light, replace Odometer/Transmission Range Indication.

COMPASS/TEMPERATURE MINI TRIP COMPUTER SELF-DIAGNOSTIC TEST
The CMTC is capable of performing a diagnostic self check on many of its internal functions. CMTC diagnostics may be performed using a scan tool (DRB) and the proper Body Diagnostic Procedures or by the following procedure.
1. With the ignition switch in the OFF position, press both the US/M and STEP button.
2. Turn ignition switch to the ON position.

The CMTC will perform internal checks while lighting all segments of the vacuum florescent display. Upon completion of the internal check, the CMTC will display
- PASS
- AIL
- CCD

If any segment of the CMTC fails to light replace the module.

If FAIL is displayed, replace the module.

If CCD is displayed, check the CCD and Body Control Module (BCM) for proper operation, If the CCD and the BCM are OK, replace the CMTC module.

For additional diagnostic information on the CMTC and for identifying CMTC problems.