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June 2013
Electrical Systems Operation & Diagnosis Module (602)
The RES (Remote Engine Start) controls and provides the following features.
• Starter motor operation
• Anti grind
• Power supply to the Acc circuit
• Power supply to IGN 1 and IGN 2 circuit
• Horn output
• Door locking
• Power window lock out
• Power supply for security system
These controls and features are only available during RES Operation.
Relays
Normally
Closed
Relay
Normally
Open
Anti
Grind
Circuit
RES
Cranking
Circuit
RES Control Unit
Ignition Switch
Start signal
Battery
Positive
Starter
Relay
Starter Motor
RES Schematic During Operation
Anti-Grind
Two relays are used to provide redundancy.
Even when the engine is started with the ignition key, the power from the ignition switch is routed
through the RES control unit. During RES operation these normally closed relays are opened and
any power from the ignition switch (start signal) is prevented from going to the starter solenoid.
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