P2532

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P2532-772: Ignition Switch Run Position Circuit High
P2532-772 - Ignition Switch Run Position Circuit High

DESCRIPTION

If a hybrid vehicle cannot be turned off, it will not be possible to determine that the vehicle cannot be turned off by listening or looking (high voltage cannot be shut off). In this case, checking for DTCs can help to determine the state of the vehicle.

When the hybrid vehicle control ECU detects that the vehicle cannot be turned off, the ECU will set this DTC. This DTC is set based on communication between the hybrid vehicle control ECU and ECUs that are activated by the IG1 relay and IG2 relay.

HINT
If DTC P2532-772 is stored, the vehicle will turn off.

WIRING DIAGRAM

INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

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

(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:

HINT
P2532-772 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

(e) Turn the power switch off.

B -- CHECK FOR INTERMITTENT PROBLEMS
A -- Continue to next step.

2. CHECK CAN COMMUNICATION SYSTEM (BUS CHECK)

(a) Connect the Techstream to the DLC3.

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

(c) Check BUS CHECK.

Result:

B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

3. CHECK HYBRID VEHICLE CONTROL ECU

(a) Disconnect connector A58 from the hybrid vehicle control ECU.

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

Standard Voltage:

Text in Illustration

(c) Connect the hybrid vehicle control ECU connector.

NG -- CHECK NO.1 INTEGRATION RELAY (IG2 RELAY)

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components

4. CHECK NO.1 INTEGRATION RELAY (IG2 RELAY)

(a) Remove the No. 1 integration relay from the engine room junction block assembly.

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

Standard Resistance:

Text in Illustration

(c) Install the No. 1 integration relay.

NG -- REPLACE NO.1 INTEGRATION RELAY
OK -- Continue to next step.

5. CHECK POWER MANAGEMENT CONTROL ECU

(a) Remove the No. 1 integration relay from the engine room junction block assembly.

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

Standard Voltage:

Text in Illustration

(c) Install the No. 1 integration relay.

NG -- CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY)
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR

(a) Disconnect the connectors of ECUs and components that are connected to the IGN fuse and MET fuse.

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

Standard Voltage:

Text in Illustration

(c) Connect the connectors that were previously disconnected.

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

7. CHECK FOR INTERMITTENT PROBLEMS

(a) Check for intermittent problems Check for Intermittent Problems.

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components

8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY)

(a) Disconnect connector F51 from the power management control ECU.

(b) Remove the No. 1 integration relay from the engine room junction block assembly.

Text in Illustration

(d) Install the No. 1 integration relay.

(e) Connect the power management control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components