Sprinter 3500 V6-3.0L DSL Turbo VIN 45 (2007)
A DTC that comes back within one cycle of the ignition key is a hard code. This means that the problem is current every time the ECM/SKIM checks
that circuit or function. Procedures in this manual verify if the DTC is a hard code at the beginning of each test. When the fault is not a hard code, an
intermittent test must be performed.
NOTE: If the scan tool displays faults for multiple components (i.e. ECT, VSS, IAT sensors) identify and check the shared circuits for possible
problems before continuing (i.e. sensor grounds or 5-volt supply circuits). Refer to the appropriate schematic to identify shared circuits.
INTERMITTENT CODE
A DTC that is not current every time the ECM checks the circuit or function is an intermittent code. Most intermittent DTCs are caused by wiring or
connector problems. Problems that come and go like this are the most difficult to diagnose; they must be looked for under specific conditions that cause
them.
NOTE: Electromagnetic (radio) interference can cause an intermittent system malfunction. This interference can interrupt communication between the
ignition key transponder and the SKIM.
The following checks may assist you in identifying a possible intermittent problem:
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Visually inspect the related wire harness connectors. Look for broken, bent, pushed out or corroded terminals.
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Visually inspect the related wire harness. Look for chafed, pierced or partially broken wire.
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Refer to hotlines or technical service bulletins that may apply.
ECM DIAGNOSTIC TROUBLE CODES
IMPORTANT NOTE: Before replacing the ECM for a failed driver, control circuit or ground circuit, be sure to check the related component/circuit
integrity for failures not detected due to a double fault in the circuit. Most ECM driver/control circuit failures are caused by internal failures to
components (i.e. relays and solenoids) and shorted circuits (i.e. sensor pull-ups, drivers and ground circuits). These faults are difficult to detect when a
double fault has occurred and only one DTC has set. If the scan tool displays faults for multiple components (i.e.VSS, ECT, Batt Temp, etc.) identify and
check the shared circuits for possible problems before continuing (i.e. sensor grounds or 5-volt supply circuits). Refer to the appropriate wiring diagrams
to identify shared circuits.
