DTC P0616:24 [START STOP UNIT]


id0902p6022500

Description

Circuit malfunction on downstream side of starter relay

Detection condition
•  Start stop unit detects an open circuit in the starter relay downstream circuit continuously for 0.5 s or more for a continuous 5 times.
Fail-safe function
Not applicable
Possible cause
•  DTCs are stored in the PCM.
•  Start stop unit connector or terminal malfunction
•  PCM connector or terminal malfunction
•  Open circuit in wiring harness between the following terminals:
―  Start stop unit terminal 1D—PCM terminal 2AZ (SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5)
―  Start stop unit terminal 1D—PCM terminal 2BF (SKYACTIV-D 1.5, SKYACTIV-D 2.2)
―  Start stop unit terminal 1D—PCM terminal 1F (MZR 1.6)
•  PCM malfunction
•  Start stop unit malfunction

Diagnostic Procedure

Step

Inspection

Action

1
VERIFY PCM DTCs
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
No
Go to the next step.
2
INSPECT START STOP UNIT CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the start stop unit connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 6.
3
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 6.
4
INSPECT FOR OPEN CIRCUIT IN DOWNSTREAM SIDE OF STARTER RELAY CIRCUIT
•  Verify that the start stop unit and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Start stop unit terminal 1D—PCM terminal 2AZ (SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5)
―  Start stop unit terminal 1D—PCM terminal 2BF (SKYACTIV-D 1.5, SKYACTIV-D 2.2)
―  Start stop unit terminal 1D—PCM terminal 1F (MZR 1.6)
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Start stop unit terminal 1D—PCM terminal 2AZ (SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5)
•  Start stop unit terminal 1D—PCM terminal 2BF (SKYACTIV-D 1.5, SKYACTIV-D 2.2)
•  Start stop unit terminal 1D—PCM terminal 1F (MZR 1.6)
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 6.
5
PERFORM DTC INSPECTION AND VERIFY PCM MALFUNCTION
•  Always reconnect all disconnected connectors.
•  Clear the DTC for the start stop unit using the M-MDS.
•  With the programmed remote transmitter in the vehicle, switch the ignition ON (engine off).
•  Perform the following work 5 times or more.
―  Depress the clutch pedal. (MTX)
―  Operate the selector lever to P or N position from other than P and N position and hold for 1 s or more. (ATX)
•  Retrieve the start stop unit DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Replace the PCM, then go to the next step.
No
Go to Step 7.
6
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC for the start stop unit using the M-MDS.
•  With the programmed remote transmitter in the vehicle, switch the ignition ON (engine off).
•  Perform the following work 5 times or more.
―  Depress the clutch pedal. (MTX)
―  Operate the selector lever to P or N position from other than P and N position and hold for 1 s or more. (ATX)
•  Retrieve the start stop unit DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the start stop unit.
Go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.