Group 38 Fault Codes, Instrument Cluster
Specifications
Specifications
Instrument Cluster, Signal Descriptions
Connector A (22–pin Green) - with breakout box connected between
the instrument cluster (MID140) and cable harness
Requirements:
•
Breakout box 9998699 connected to adapter
9998533 between the instrument cluster and cable
harness. Use extension cable 9990062 if needed.
•
Instrument cluster connected.
•
Ignition key in the drive position.
•
Engine switched off.
•
Measuring voltage using the multimeter.
Notes:
V = direct current voltage (V)
V
bat
= battery voltage
R = resistance in ohms (
)
W3005144
Pin
Signal type
Measurement
points
Nominal value
Other
A1
Power supply (BAT+)
A1 - A2
V
≈
V
bat
A2
Ground
A2 - ground
V
≈
0 V
A3
Ignition supply, (DR or key ON)
A3 - A2)
V
≈
V
bat
A4
Stalk switch, SELECT
A4 - A2
V
≈
0 V
V
≈
V
bat
(SELECT active)
A5
Stalk switch, ESCAPE
A5 - A2
V
≈
0 V
V
≈
V
bat
(ESCAPE active)
A6
Stalk switch, ARROW UP
A6 - A2
V
≈
0 V
V
≈
V
bat
(ARROW UP active)
A7
Stalk switch, ARROW DOWN
A7 - A2
V
≈
0 V
V
≈
V
bat
(ARROW DOWN ac-
tive)
A8
Not used
A9
Not used
A10
SAE J1939-3 High
A10 - A2
V
≈
0 -5 V
A11
Not used
A12
Ref Ground for sensor
A12 - A2
V
≈
0 V
A13
Not used
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