C2303

HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2303: Relay Malfunction (+B Short)

DTC C2303 - Relay Malfunction (+B Short)

DESCRIPTION

The transaxle parking lock control relay (Marking: P CON) is activated by output voltage from the transmission control ECU and supplies power to the shift control actuator. The transmission control ECU outputs this DTC when it detects a malfunction in the transaxle parking lock control relay.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT TRANSAXLE PARKING LOCK CONTROL RELAY (Marking: P CON)




(a) Remove the P CON MTR relay from the engine room relay block.
(b) Measure the resistance of the relay.
Standard resistance:






NG -- REPLACE TRANSAXLE PARKING LOCK CONTROL RELAY
OK -- Continue to next step.

2. CHECK WIRE HARNESS (TRANSMISSION CONTROL ECU - CONTROL RELAY)




(a) Disconnect the T4 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

3. CHECK WIRE HARNESS (TRANSMISSION CONTROL ECU - ACTUATOR)




(a) Disconnect the T4 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

4. CHECK WIRE HARNESS (SHIFT CONTROL ACTUATOR - CONTROL RELAY)




(a) Disconnect the S1 actuator connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE TRANSMISSION CONTROL ECU