C2303

P410 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2303: Short in Power Source Relay Circuit
C2303 - Short in Power Source Relay Circuit

DESCRIPTION

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





WIRING DIAGRAM

Refer to the wiring diagram for DTC C2301 C2301.

INSPECTION PROCEDURE

NOTICE:
It may not be possible to clear the following DTCs using the Techstream: DTC C2300 (Actuator System Malfunction), C2301 (Shift Changing Time Malfunction), C2303 (Short in Power Source Relay Circuit), C2304 (Open or Short Circuit in U Phase), C2305 (Open or Short Circuit in V Phase), C2306 (Open or Short Circuit in W Phase), C2307 (Power Supply) and C2309 (Open in B+ Circuit). In such cases, disconnect the P CON MAIN fuse and wait for at least 60 seconds to clear the DTCs after the repair.

PROCEDURE

1. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT CONTROL ACTUATOR ASSEMBLY POWER SOURCE CIRCUIT)

(a) Disconnect connector D2 from the shift control actuator assembly.

(b) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





Text in Illustration





(c) Connect the shift control actuator assembly connector.

NG -- INSPECT P CON MTR RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - SHIFT CONTROL ACTUATOR)

(a) Disconnect connector A21 from the transmission control ECU assembly.

(b) Disconnect connector D2 from the shift control actuator assembly.

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





Standard Resistance (Check for Short):





Text in Illustration





(d) Connect the shift control actuator assembly connector.

(e) Connect the transmission control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components

3. INSPECT P CON MTR RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)

(a) Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.





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

Standard Resistance:





(c) Reinstall the P CON MTR relay (transaxle parking lock control relay).

NG -- REPLACE P CON MTR RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - P CON MTR RELAY)

(a) Disconnect connector A21 from the transmission control ECU assembly.

(b) Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

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





Standard Resistance (Check for Short):





Text in Illustration





(d) Reinstall the P CON MTR relay (transaxle parking lock control relay).

(e) Connect the transmission control ECU assembly connector.

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

5. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ACTUATOR ASSEMBLY - P CON MTR RELAY)

(a) Disconnect connector D2 from the shift control actuator assembly.

(b) Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

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





Standard Resistance (Check for Short):





Text in Illustration





(d) Reinstall the P CON MTR relay (transaxle parking lock control relay).

(e) Connect the shift control actuator assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- CHECK FOR INTERMITTENT PROBLEMS How To Proceed With Troubleshooting