Troubleshooting

(Table 87, contd)
677-3 Engine Starter Motor Relay : Voltage Above Normal The Electronic Control Module (ECM) detects the following conditions:
A short circuit to battery in the circuit for the starting motor relay while
no start request is detected.
The battery voltage is between 9.5 and 16 VDC.
The warning lamp will come on.
The start relay circuit will be disabled.
677-5 Engine Starter Motor Relay : Current Below Normal The ECM detects the following conditions:
A low current condition on the circuit for the starting motor relay while
no start request is detected.
The battery voltage is between 9.5 and 16 VDC.
The warning lamp will come on.
The start relay circuit will be disabled.
677-6 Engine Starter Motor Relay : Current Above Normal The ECM detects the following conditions:
A high current condition (short circuit) in the circuit for the starting mo-
tor relay.
The battery voltage is between 9.5 and 16 VDC.
If equipped, the warning lamp will come on. The engine may be
derated.
The start relay circuit will be disabled.
1041-2 Start Signal Indicator : Erratic, Intermittent, or Incorrect This diagnostic code indicates that the start signal has remained active
for too long.
This condition may be caused by the keyswitch being held in the
START position for too long.
The warning lamp will come on.
Illustration 45 g03730757
Schematic diagram for the start relay circuit
Not all connectors are shown. Refer to the Electrical Schematic for the application.
180 UENR0612-07
Circuit Tests
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