TPA400 Rev0509
18
DIAGNOSTICS
The information listed in Table 2 is to aid in troubleshooting a problem with the
TACHPLUS+. The diagnostic code will be shown in the Message Display on the
control module.
Table 2. Diagnostic Codes
Message
Display
Problem
Probable Cause
E1
NO DATA
>Datalink cable not connected / connected to wrong port
>Broken wire / bad connector contact on datalink cable
E2
BAD DATA
>Noise interference (radio frequency or electrical)
E3
NO RPM
>Datalink cable not connected / connected to wrong port
>Engine not running / ignition key on
>Broken wire / bad connector contact on alternator cable
E4
NO DATA
>No voltage at interlock input
FROM ECM
>Internal datalink problem
>Datalink shorted
E5
N/A
N/A
E6
N/A
N/A
E7
N/A
N/A
E8
MEMORY
>Contact FRC
FAIL
E9
OIL
>Sensor cable not connected
PRESSURE >Broken wire / bad connector contact on sensor cable
>Defective pressure sensor
E10
ENGINE
>Sensor cable not connected
TEMP
>Broken wire / bad connector contact on sensor cable
>Defective temperature sensor
