RAM 3500 Chassis Cab Truck 2WD L6-6.7L DSL Turbo (2010)
Engine Control Module: Testing and Inspection
CHECKING THE ECM POWER AND GROUNDS
For a complete wiring diagram Refer to the Wiring Information
1. ECM GROUND CIRCUIT(S) OPEN
1. Turn the ignition off.
2. Disconnect the ECM harness connectors.
3. Using a 12-volt test light connected to 12-volts, check each of the ECM ground circuits in ECM harness connector.
Did the test light illuminate for each cavity?
Yes
-
Go To 2
No
-
Repair the ECM Ground circuit(s) for an open.
-
Perform the ECM VERIFICATION TEST.
See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Powertrain Verification Test
2. FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
1. Turn the ignition off.
2. Disconnect the ECM harness connectors.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the Fused Ignition Switch Output circuit in ECM harness connector.
Is the test light on?
Yes
-
Go To 3
No
-
Repair the Fused Ignition Switch Output circuit for an open.
-
Perform the ECM VERIFICATION TEST.
See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Powertrain Verification Test
3. FUSED B+ CIRCUIT OPEN
1. Turn the ignition off.
2. Disconnect the ECM harness connectors.
3. Using a 12-volt test light connected to ground, check each Fused B+ circuit in the ECM harness connector.
Does the test light illuminate brightly for each circuit?
Yes
-
Test Complete.
-
Perform the ECM VERIFICATION TEST.
See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Powertrain Verification Test
No
-
Repair the Fused B+ Output circuit for an open.
-
Perform the ECM VERIFICATION TEST. See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification
Tests/Powertrain Verification Test