DTC P2532-772: Ignition Switch Run Position Circuit High: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   DTC P2532-772 only is output	A
   DTC P2532-772 is not output	B

   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.

5. Turn the power switch off.

B → See step   7 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Check BUS CHECK.

   Result

   Result	Proceed to
   The screen does not display the skid control ECU and A/C amplifier.	A
   The screen displays the skid control ECU and A/C amplifier.	B

B → See step   10 

A: Go to next step 

1. Disconnect connector A58 from the hybrid vehicle control ECU.
2. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying Connector A58 From The Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A58-57 (IGSW) - Body ground	Power switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Hybrid Vehicle Control ECU)

3. Connect the hybrid vehicle control ECU connector.

NG → See step   4 

OK → See step   9 

1. Remove the No. 1 integration relay from the engine room junction block assembly.
   Fig 2: Identifying No. 1 Integration Relay (IG2 Relay) From Engine Room Junction Block Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1A-1 - 1A-4	Does not apply battery voltage between terminals 1A-2 and 1A-3	Below 1 Ω
   1A-1 - 1A-4	Apply battery voltage between terminals 1A-2 and 1A-3	10 kΩ or more

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (to No. 1 Integration Relay)

3. Install the No. 1 integration relay.

NG → REPLACE NO. 1 INTEGRATION RELAY 

OK: Go to next step 

1. Remove the No. 1 integration relay from the engine room junction block assembly.
   Fig 3: Identifying 1A No. 1 Integration Relay From The Engine Room Junction Block Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1A-2 - Body ground	Power switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to No. 1 Integration Relay)

3. Install the No. 1 integration relay.

NG → See step   8 

OK: Go to next step 

1. Disconnect the connectors of ECUs and components that are connected to the IGN fuse and MET fuse.
2. Measure the voltage according to the value(s) in the table below.
   Fig 4: Identifying Connector A58 From The Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A58-57 (IGSW) - Body ground	Power switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Hybrid Vehicle Control ECU)

3. Connect the connectors that were previously disconnected.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check for intermittent problems. Refer toCHECK FOR INTERMITTENT PROBLEMS .

NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

OK → See step   9 

1. Disconnect connector F51 from the power management control ECU.
2. Remove the No. 1 integration relay from the engine room junction block assembly.
   Fig 5: Identifying F51 Power Management Control ECU & No. 1 Integration Relay From Engine Room J/B Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F51-8 (IG2D) - IG2 relay terminal 2	Power switch off	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Power Management Control ECU)

4. Install the No. 1 integration relay.
5. Connect the power management control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   11