i05939117
Relay - Test
(Start Relay)
This procedure covers the following diagnostic code:
Table 87
Diagnostic Trouble Codes for the Starting Motor Relay
J1939 Code Description Notes
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 motor
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.
174 UENR0612
Circuit Tests
This document has been printed from SPI2. NOT FOR RESALE
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