DTC P0615

DTC P0615:  Starter Relay STRLD Circuit Malfunction

General Description 

Courtesy of HONDA, U.S.A., INC.

The starter control system prevents the starter from accidentally activating when the shift lever position is not in the P or N position (CVT) or the clutch pedal is released (M/T), or when the engine is running. If the vehicle is turned mistakenly while the shift lever position is not in P or N position (CVT) or the clutch pedal is released (M/T) or while the engine is running, the powertrain control module (PCM) will stop power to the starter cut relays. In this system, two starter cut relays are connected in series (starter cut relay 1, starter cut relay 2) to prevent the starter from running continuously due to a starter cut relay malfunction. Also a diagnosis line (START DIAG) is connected to monitor the voltage between the starter cut relay 1 and starter cut relay 2. Based on the diagnosis line signals, the PCM detects an OPEN malfunction of diagnosis line, an ON malfunction of starter cut relay 1, and an ON malfunction of starter cut relay 2. If the voltage of the diagnosis line (START DIAG) input does not exceed the upper and lower limits for a specified duration when the power is applied to the starter cut relays by turning the vehicle to the START mode (STS ON), the PCM detects an OPEN malfunction of the diagnosis line and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type 

Execution	Continuous
Sequence	None
Duration	400 milliseconds or more

DTC Type

Two drive cycles, MIL off

Enable Conditions 

Condition
Starter	ON

Malfunction Threshold 

The diagnosis line (START DIAG) input voltage [STARTER CUT RELAY] is between 2.4 V to 2.6 V for at least 400 milliseconds.

[ ]: HDS Parameter

Possible Cause 

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• Starter cut relay START DIAG line open
• PCM internal circuit failure

Diagnosis Details 

Conditions for setting the DTC 

When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC and the freeze data are stored. The MIL does not come on.

Conditions for clearing the DTC 

The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.