C2304

P410 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2304-C2306: Open or Short Circuit in U Phase
C2306 - Open or Short Circuit in W Phase

DESCRIPTION

The shift control actuator consists of the parking lock motor and the rotation angle sensor. The transmission control ECU receives a P position switch signal from the power management control ECU (HV CPU) and activates the parking lock motor by controlling current, causing the parking lock mechanism to switch. The transmission control ECU outputs these DTCs when it detects a malfunction in the parking lock motor system.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* Do not remove/install the auxiliary battery or disconnect the cable from the battery terminal before instructed.
* Do not disconnect the connectors before instructed.
* It is not possible to clear the following DTCs using the Techstream: DTCs 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). After the repair, it is necessary to disconnect the P CON MAIN fuse and wait for at least 60 seconds to clear the DTCs.

PROCEDURE

1. CHECK DTC OUTPUT (TRANSMISSION CONTROL)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Chassis / Transmission Control / Trouble Codes.

(d) Check if DTCs are output.

Result





HINT
* If DTCs C2304, 2305 and 2306 are stored at the same time, there may be a malfunction in the parking lock motor (BMA signal) power source circuit.
* If DTC C2304, 2305 or 2306 is stored individually, there may be a malfunction in the parking lock motor (MUA, MVA or MWA signal) circuits.

(e) Turn the power switch off.

B -- READ VALUE USING TECHSTREAM (U, V, W VOLTAGE)
A -- Continue to next step.

2. CHECK FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Chassis / Transmission Control / Trouble Codes.

(d) Read the freeze frame data of C2304, 2305 and 2306.

Result





(e) Turn the power switch off.

B -- REPLACE AUXILIARY BATTERY
A -- Continue to next step.

3. CHECK NO.1 INTEGRATION RELAY

(a) Turn the power switch on (IG).

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





Standard Voltage:





Text in Illustration





HINT
If the result is not as specified, one of the electrical loads connected to the integration relay may have a short circuit.

Result:





(c) Turn the power switch off.

B -- READ VALUE USING TECHSTREAM (U, V, W VOLTAGE)
A -- Continue to next step.

4. CLEAR DTC

(a) Turn the power switch on (IG).

(b) Enter the following menus: Chassis / Transmission Control / Trouble Codes.

(c) Read and record the DTCs and freeze frame data.

(d) Turn the power switch off.

(e) Disconnect the P CON MAIN fuse and wait for at least 60 seconds.

(f) Check for DTCs again to see if the DTCs are cleared.

NEXT -- Continue to next step.

5. CHARGE AUXILIARY BATTERY

(a) Charge the auxiliary battery.

NEXT -- Continue to next step.

6. CHECK DTC OUTPUT (SIMULATION TEST)

(a) Connect the Techstream to the DLC3.

(b) Release the brake pedal and turn the power switch on (IG).

HINT
Do not turn the power switch on (READY).

(c) Depress the brake pedal and move the selector lever to N.

(d) Enter the following menus: Chassis / Transmission Control / Trouble Codes.

(e) Check if DTCs are output.

Result:





(f) Turn the power switch off.

B -- END (AUXILIARY BATTERY WAS INSUFFICIENTLY CHARGED)
A -- Continue to next step.

7. READ VALUE USING TECHSTREAM (U, V, W VOLTAGE)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Chassis / Transmission Control / Data List / U Phase Voltage Value, V Phase Voltage Value, W Phase Voltage Value.

(d) Read the Data List displayed on the Techstream.

Result:





(e) Turn the power switch off.

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

OK -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components

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

(a) Disconnect the A23 transmission control ECU assembly connector.

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

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





Standard Resistance (Check for Open):





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 -- Continue to next step.

9. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY POWER SOURCE CIRCUIT)

(a) Disconnect the 1G and 1H integration relay connectors.

(b) Turn the power switch on (IG)

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





Standard Voltage:





Text in Illustration





(d) Turn the power switch off.

(e) Connect the integration relay connectors.

NG -- CHECK AND REPAIR POWER SOURCE CIRCUIT
OK -- Continue to next step.

10. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ACTUATOR ASSEMBLY - INTEGRATION RELAY)

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

(b) Disconnect the 1H integration relay connector.

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





Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(d) Connect the integration relay connector.

(e) Connect the shift control actuator assembly connector.

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

11. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY

(a) Disconnect the A23 transmission control ECU assembly connector.

(b) Disconnect the 1H integration relay connector.

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





Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(d) Connect the integration relay connector.

(e) Connect the transmission control ECU assembly connector.

NG -- REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY Components
OK -- Continue to next step.

12. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - INTEGRATION RELAY)

(a) Disconnect the A23 transmission control ECU assembly connector.

(b) Disconnect the 1G integration relay connector.

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





Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(d) Connect the integration relay connector.

(e) Connect the transmission control ECU assembly connector.

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

13. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BODY GROUND)

(a) Disconnect the 1G and 1H integration relay connectors.

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





Standard Resistance (Check for Open):





Text in Illustration





(c) Connect the integration relay connectors.

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

14. REPLACE NO.1 INTEGRATION RELAY

(a) Replace the integration relay Components.

NEXT -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components