C2304

P311 HYBRID TRANSMISSION / TRANSAXLE: ELECTRONIC SHIFT LEVER SYSTEM: C2304-C2306: Open or Short Circuit in U 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 hybrid vehicle control ECU 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

Refer to the wiring diagram for DTC C2301 C2301.

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. CLEAR DTC C2300

NEXT -- Continue to next step.

4. CHARGE AUXILIARY BATTERY

(a) Charge the auxiliary battery.

NEXT -- Continue to next step.

5. 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 shift 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.

6. 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

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

(a) Disconnect connector A35 from the transmission control ECU assembly.

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

(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.

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

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

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

Text in Illustration

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

Text in Illustration

(d) Install the P CON MTR relay to the engine room junction block assembly.

(e) Connect the shift control actuator assembly connector.

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

9. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY

(a) Disconnect connector A35 from the transmission control ECU assembly connector.

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

Text in Illustration

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

Text in Illustration

(d) Install the P CON MTR relay to the engine room junction block assembly.

(e) Connect the transmission control ECU assembly connector.

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

10. CHECK RELAY (P CON MTR) C2303

NG -- REPLACE RELAY (P CON MTR) Components
OK -- Continue to next step.

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

(a) Disconnect connector A35 from the transmission control ECU assembly.

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

Text in Illustration

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

Text in Illustration

(d) Install the P CON MTR relay to the engine room junction block assembly.

(e) Connect the transmission control ECU assembly connector.

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

12. CHECK HARNESS AND CONNECTOR (P CON MTR RELAY - BODY GROUND)

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

Text in Illustration

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

Standard Resistance (Check for Open):

Text in Illustration

(c) Install the P CON MTR relay to the engine room junction block assembly.

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

13. CHECK HARNESS AND CONNECTOR (P CON MTR RELAY POWER SOURCE CIRCUIT)

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

Text in Illustration

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

Standard Voltage:

Text in Illustration

(c) Install the P CON MTR relay to the engine room junction block assembly.

NG -- CHECK AND REPAIR POWER SOURCE CIRCUIT

OK -- REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Components