PR25DD engine
- CHECK DTC PRIORITY
If DTC P1572 is displayed with DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B, first perform the trouble diagnosis for DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B.
Is applicable DTC detected?
YES
Perform diagnosis of applicable. Refer to DTC Index .
NO
GO TO 2.
- CHECK OVERALL FUNCTION-1
With CONSULT
- Turn ignition switch ON.
- Select "BRAKE SW1" in "DATA MONITOR" mode of "ENGINE" using CONSULT.
- Check "BRAKE SW1" indication as per the following conditions.
Monitor item
Condition
Indication
BRAKE SW1
Brake pedal
Slightly depressed
OFF
Fully released
ON
Without CONSULT
- Turn ignition switch ON.
- Check the voltage between ECM harness connector terminals as per the following.
ECM
Condition
Voltage
(Approx.)
Connector
+
-
Terminal
E31
150
162
Brake pedal
Slightly depressed
0 V
Fully released
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 4.
- CHECK OVERALL FUNCTION-2
Select "BRAKE SW2" and check indication as per the following conditions.
Monitor item
Condition
Indication
BRAKE SW2
Brake pedal
Slightly depressed
ON
Fully released
OFF
Check the voltage between ECM harness connector terminals as per the following conditions.
ECM
Condition
Voltage
(Approx.)
Connector
+
-
Terminal
E31
149
162
Brake pedal
Slightly depressed
Battery voltage
Fully released
0 V
Is the inspection result normal?
YES
Check intermittent incident. Refer to Inspection .
NO
GO TO 7.
- CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect brake pedal position switch harness connector.
- Turn ignition switch ON.
- Check the voltage between brake pedal position switch harness connector and ground.
+
-
Voltage
Brake pedal position switch
Connector
Terminal
E51
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 5.
NO
Perform the trouble diagnosis for power supply circuit.
- CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between brake pedal position switch harness connector and ECM harness connector.
+
-
Continuity
Brake pedal position switch
ECM
Connector
Terminal
Connector
Terminal
E51
2
E31
150
Existed
- Also check harness for short to ground and to power.
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace error-detected parts.
- CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to Component Inspection .
Is the inspection result normal?
YES
Check intermittent incident. Refer to Inspection .
NO
Replace brake pedal position switch. Refer to Exploded View .
- CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect stop lamp switch harness connector.
- Check the voltage between stop lamp switch harness connector and ground.
+
-
Voltage
Stop lamp switch
Connector
Terminal
E38
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 8.
NO
Perform the trouble diagnosis for power supply circuit.
- CHECK STOP LAMP SWITCH
Check the stop lamp switch. Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 9.
NO
Replace stop lamp switch. Refer to Exploded View .
- CHECK STOP LAMP SWITCH SIGNAL CIRCUIT
- Disconnect ECM harness connector.
- Check the continuity between stop lamp switch harness connector and ECM harness connector.
+
-
Continuity
Stop lamp switch
ECM
Connector
Terminal
Connector
Terminal
E38
2
E31
149
Existed
- Also check harness for short to ground and to power.
Is the inspection result normal?
YES
Check intermittent incident. Refer to Inspection .
NO
Repair or replace error-detected parts