PR25DD engine
- CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY
- Turn ignition switch ON.
- Check the voltage between ECM harness connector and ground.
+
-
Voltage
ECM
Connector
Terminal
Connector
Terminal
F90
128
E31
162
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
- Disconnect ECM harness connector.
- Disconnect IPDM E/R harness connector.
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
+
-
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
F90
128
F10
72
Existed
- Also check harness for short to ground.
Is the inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL
Check the voltage between ECM harness connector and ground as per the following conditions.
ECM
Condition
Voltage
(Approx.)
+
-
Connector
Terminal
Connector
Terminal
F90
97
E31
162
Ignition switch: OFF
0 V
Ignition switch: ON
Battery voltage
Is the inspection result normal?
YES
Check intermittent incident. Refer to Inspection .
NO
GO TO 4.
- CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Disconnect IPDM E/R harness connector.
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
+
-
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
F90
97
F10
67
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.