Toyota Corolla Cross: Starter Relay Circuit Short to Battery (P061512)

MONITOR DESCRIPTION

While the engine is being cranked, positive auxiliary battery voltage is applied to terminal STA of the ECM. If the ECM detects the starter control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and stores the DTC.

This monitor runs when the vehicle is driven at 20 km/h (12.43 mph) or more for 20 seconds or more.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
P061512	Starter Relay Circuit Short to Battery	All of the following conditions are met, and auxiliary battery voltage of 10.5 V or higher is applied to the ECM for 20 seconds (1 trip detection logic): (a) The vehicle speed is 20 km/h (12.43 mph) or more. (b) The engine speed is 1000 rpm or higher. (c) The STA signal is on.	ST relay Park/neutral position switch assembly Starter relay (ST) circuit TCM ECM	Comes on	SAE Code: P0617 DTC for Mexico Models: Applies

MONITOR STRATEGY

Related DTCs	P0617: Starter relay verify input signal
Required Sensors/Components (Main)	Starter relay (ST) Park/neutral position switch assembly Certification ECU (smart key ECU assembly) (w/ Smart Key System) Ignition or starter switch assembly (w/o Smart Key System)
Required Sensors/Components (Related)	Vehicle speed sensor Crankshaft position sensor
Frequency of Operation	Continuous
Duration	20 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
All of the following conditions are met	-
Auxiliary battery voltage	10.5 V or higher
Vehicle speed	20 km/h (12.43 mph) or more
Engine speed	1000 rpm or higher

TYPICAL MALFUNCTION THRESHOLDS

Starter signal

On

CONFIRMATION DRIVING PATTERN

HINT:

• After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

  Click here

• When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

  Click here

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
5. Turn the ignition switch off and wait for at least 30 seconds.
6. Turn the ignition switch to ON [A].
7. Turn the GTS on.
8. Start the engine.
9. Idle the engine for 5 seconds or more [B].
10. Drive the vehicle at a speed of 24 km/h (15 mph) or more for 20 seconds or more [C].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

11. Enter the following menus: Powertrain / Engine / Trouble Codes [D].
12. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
14. Input the DTC: P061512.
15. Check the DTC judgment result.

    GTS Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • [A] to [D]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.	READ VALUE USING GTS (STARTER SW)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Starter SW

(b) According to the display on the GTS, read the Data List.

Standard:

Condition	Starter SW
Ignition switch ON	OFF

(c) According to the display on the GTS, read the Data List while the vehicle is being driven with an engine speed of 1000 rpm or more at a vehicle speed of 20 km/h (12.43 mph) or more.

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Standard:

Condition	Starter SW
Driving at 20 km/h (12.43 mph) or more (engine speed 1000 rpm or more)	OFF

HINT:

If the result of either of the above is not as specified, proceed to the next step with the ignition switch to ON, GTS connected and Data List item "Starter SW"selected.

Result	Proceed to
OK	A
NG (w/ Smart Key System)	B
NG (w/o Smart Key System)	C

HINT:

If the starter assembly operates continuously when the ignition switch is turned to ON, proceed to the next step without reading the Data List item "Starter SW".

A

CHECK FOR INTERMITTENT PROBLEMS

C

GO TO STEP 9

B

2.	INSPECT ST RELAY (CHECK FOR SHORT CIRCUIT)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Starter SW

(b) Remove the ST relay from the No. 1 engine room relay block assembly.

(c) According to the display on the GTS, read the Data List.

Result	Proceed to
The Data List item "Starter SW" does not change from ON	A
The Data List item "Starter SW" changes from ON to OFF	B

HINT:

• When the result of the above inspection is "The Data List item "Starter SW" does not change from ON", the ST relay is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE ST RELAY

A

3.	CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST RELAY)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

HINT:

The purpose of this step is to check for ST relay terminal voltage under abnormal conditions.

(a) Remove the ST relay from the No. 1 engine room relay block assembly.

(b) Turn the ignition switch to ON.

(c) Measure the voltage between ST relay terminal 2 and body ground.

HINT:

• Make a note of the measured voltage as it will be necessary for the inspecting the change in voltage in the next step. As the next step should be conducted under the same conditions, keep the ignition switch ON and do not install the ST relay.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.
• If any voltage was measured with the ignition switch ON, one of the following malfunctions is suspected:
  • Short to +B in the circuit of a connected ECU or the switch.
  • Short to +B in the wire harness.

NEXT

4.	INSPECT ENGINE STOP AND START ECU (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the engine stop and start ECU connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST NO. 1 relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST NO. 1 relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the engine stop and start ECU is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE ENGINE STOP AND START ECU

A

5.	INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the park/neutral position switch assembly connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the park/neutral position switch assembly is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for 2WD: Click here for AWD: Click here

A

6.	INSPECT TCM (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the TCM connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the TCM is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE TCM for 2WD: Click here for AWD: Click here

A

7.	INSPECT ECM (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the ECM connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the ECM is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE ECM

A

8.	CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - SMART KEY ECU ASSEMBLY - TCM - ST RELAY)

(a) Disconnect the ECM connector.

(b) Disconnect the park/neutral position switch assembly connector.

(c) Disconnect the certification ECU (smart key ECU assembly) connector.

(d) Disconnect the TCM connector.

(e) Remove the ST relay from the No. 1 engine room relay block assembly.

(f) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A47-30 (STA), C62-5 (L), I223-3 (STA) or 2 (ST relay) - Other terminals	Always	10 kΩ or higher

OK

CHECK SMART KEY SYSTEM (CHECK FOR STA TERMINAL VOLTAGE OF SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.	INSPECT ST RELAY (CHECK FOR SHORT CIRCUIT)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display
Starter SW

(b) Remove the ST relay from the No. 1 engine room relay block assembly.

(c) According to the display on the GTS, read the Data List.

Result	Proceed to
The Data List item "Starter SW" does not change from ON	A
The Data List item "Starter SW" changes from ON to OFF	B

HINT:

• When the result of the above inspection is "The Data List item "Starter SW" does not change from ON", the ST relay is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE ST RELAY

A

10.	CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST RELAY)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

HINT:

The purpose of this step is to check for ST relay terminal voltage under abnormal conditions.

(a) Remove the ST relay from the No. 1 engine room relay block assembly.

(b) Turn the ignition switch to ON.

(c) Measure the voltage between ST relay terminal 2 and body ground.

HINT:

• Make a note of the measured voltage as it will be necessary for the inspecting the change in voltage in the next step. As the next step should be conducted under the same conditions, keep the ignition switch ON and do not install the ST relay.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.
• If any voltage was measured with the ignition switch ON, one of the following malfunctions is suspected:
  • Short to +B in the circuit of a connected ECU or the switch.
  • Short to +B in the wire harness.

NEXT

11.	INSPECT ENGINE STOP AND START ECU (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the engine stop and start ECU connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST NO. 1 relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST NO. 1 relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the engine stop and start ECU is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE ENGINE STOP AND START ECU

A

12.	INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the park/neutral position switch assembly connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the park/neutral position switch assembly is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for 2WD: Click here for AWD: Click here

A

13.	INSPECT TCM (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the TCM connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the TCM is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

B

REPLACE TCM for 2WD: Click here for AWD: Click here

A

14.	INSPECT ECM (CHECK FOR SHORT CIRCUIT)

*1	No. 1 Engine Room Relay Block Assembly
*2	ST Relay

(a) Disconnect the ECM connector.

(b) Measure the voltage between ST relay terminal 2 and body ground and compare it to the voltage measured in the previous step.

Result	Proceed to
The voltage between ST relay terminal 2 and body ground does not change when the connector is disconnected.	A
The voltage between ST relay terminal 2 and body ground changes when the connector is disconnected.	B

HINT:

• If the voltage is the same before and after disconnecting the connector, the ECM is normal.
• DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

A

REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - TCM - ST RELAY)

B

REPLACE ECM

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