P0615

DTC P0615

CIRCUIT DESCRIPTION
The engine control module (ECM) supplies a ground path for the starter relay when start enable has been requested. The ECM monitors this circuit for conditions that are incorrect for the commanded state. If the ECM detects an improper circuit condition, starter relay DTC P0615 will set.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0615 Starter Relay Control Circuit

CONDITIONS FOR RUNNING THE DTC
System voltage is between 9-16 volts.

CONDITIONS FOR SETTING THE DTC
- The ECM detects an improper voltage level on the output circuit that controls the starter relay.
- The condition exists for at least 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
- The ECM will not illuminate the malfunction indicator lamp (MIL)
- The ECM will store the conditions present when the DTC set as Fail Records data only.

CONDITIONS FOR CLEARING THE MIL/DTC
- The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
- The DTC can be cleared by using the scan tool Clear DTC Information function.

DIAGNOSTIC AIDS
Ignition system DTCs set with the ignition switch in the START position if the starter relay or the starter is inoperative. When the ECM enables starter operation, the ECM also initiates the diagnostic test routines for DTCs P0335, P0340, and P0385. If a condition exists which prevents the engine from cranking, the ECM will not receive signal input from the crankshaft position (CKP) and camshaft position (CMP) sensors, and the DTCs will set.

Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may assist in diagnosing the condition. The information may help determine how often the condition that set the DTC occurs.

TEST DESCRIPTION

Step 1 - Step 11:

The numbers below refer to the step numbers on the diagnostic table.
2. Listen for an audible click when the starter relay operates. Press the ignition switch back and forth from the ON to START positions. Repeat this as necessary.
3. This step tests for voltage at the coil side of the starter relay. The IGN fuse supplies power to the coil side of the starter relay.
4. This step verifies that the ECM is providing ground to the starter relay.
5. This step tests if ground is constantly being applied to the starter relay.
8. The RUN/CRANK ELEC fuse supplies voltage to the coil side of the starter relay for vehicle equipped with a manual transmission. The IGN fuse supplies voltage to the coil side of the starter relay for vehicles equipped with an automatic transmission.