Group 38 Fault Codes, Instrument Cluster Troubleshooting
Cable harness
3
For checking the cable harness, see
service information under function
group 371.
Checking component
Note: Faults in the component may be caused by faults
in the cable harness to the control unit. Check the cable
harness before connecting a new component.
Sensor
1
Requirements:
•
The connector for the sensor dis-
connected.
•
Measuring resistance using a
multimeter.
•
Ignition off.
•
Measurement to sensor. (See
page 17 for measurement points.)
Measuring
points
Nominal value
A-B R ≈ 90
@
(220
F)
R ≈ 255
@
(160
F)
R ≈ 1k
@ (77
F)
J39200
Checking sub-systems
Ground cable
1
Requirements:
•
Breakout box with adapter con-
nected between instrument cluster
connector B and cable harness.
•
Measuring resistance using a
multimeter.
•
Ignition off.
•
Instrument cluster connected.
Measuring
points
Nominal value
Pin B1- ground R ≈ 0
Note: If the correct value is not
achieved, remove the voltage from the
battery and measure again.
9813194
9998699
J39200
Signal cable
2
Requirements:
•
Breakout box with adapter con-
nected between instrument cluster
connector B and cable harness.
•
Measuring voltage using the multi-
meter.
•
Ignition key in the drive position.
•
Instrument cluster connected.
Measuring
points
Nominal value
Pins B1 - B3 V
max
≈ 5V
V
min
≈ 0V
9813194
9998699
J39200
Verification
Check that the fault has been repaired using the tests in
VCADS Pro (See “Tests in VCADS Pro” page 18).
19
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