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

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Read and record the DTCs and freeze frame data.
5. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
6. Clear DTCs and freeze frame data.

NEXT: Go to next step 

1. Leave the vehicle for 15 seconds or more with the ignition switch ON after clearing DTCs.

   HINT: 

   Leaving the vehicle for 15 seconds or more is required to detect DTC U0140-146.

2. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
3. Check if DTCs are output.

   Result

   Result	Proceed to
   U0140-146 is not output but P2532-772 is output.	A
   U0140-146 and P2532-772 are output.	B
   Only DTCs other than U0140-146 and P2532-772 are output.	C
   No DTC is output.	D

4. Turn the ignition switch off.

B → See step   14 

C → See step   15 

D → See step   6 

A: Go to next step 

1. Remove the ECU IG NO. 1 fuse from the instrument panel junction block.
   Fig 1: Identifying Fuse (ECU IG No. 1)

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   ECU IG NO. 1 fuse	Ignition switch off	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Instrument Panel Junction Block
   *2	ECU IG NO. 1 Fuse

3. Install the ECU IG NO. 1 fuse.

NG → REPLACE FUSE (ECU IG NO. 1) 

OK: Go to next step 

1. Disconnect connector 1A from the instrument panel junction block.
   Fig 2: Checking Power Source Circuit (Instrument Panel Junction Block)

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   1A-1 - Body ground	Ignition switch off	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Instrument Panel Junction Block)

3. Connect the instrument panel junction block connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - AUXILIARY BATTERY) 

OK: Go to next step 

1. Disconnect the 1A and 1F connectors from the instrument panel junction block.
   Fig 3: Checking Harness And Connector (Instrument Panel Junction Block)

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   1F-10 - Body ground	Ignition switch off	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Instrument Panel Junction Block)

3. Connect the instrument panel junction block connectors.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MAIN BODY ECU) 

1. Turn the ignition switch off.
2. Leave the vehicle for 1.5 seconds or more.

   HINT: 

   Leaving the vehicle for 1.5 seconds or more is required to detect DTC P2532-772.

3. Turn the ignition switch to ON.
4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
5. Check if DTCs are output.

   Result

   Result	Proceed to
   P2532-772 is output.	A
   P2532-772 is not output.	B

B → See step   16 

A: Go to next step 

1. Turn the ignition switch off.
2. Disconnect connector A66 from the hybrid vehicle control ECU.
   Fig 4: Checking Hybrid Vehicle Control ECU

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-1 (IGSW) - Body ground	Ignition switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU)

4. Connect the hybrid vehicle control ECU connector.

NG → See step   9 

OK → See step   8 

1. Remove the IG2 relay from the engine room relay block.
   Fig 5: Checking IG2 Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Engine Room Relay Block
   *2	IG2 Relay

2. Disconnect connector A66 from the hybrid vehicle control ECU.
   Fig 6: Checking Hybrid Vehicle Control ECU

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-1 (IGSW) - Body ground	Ignition switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU)

4. Install the IG2 relay.
5. Connect the hybrid vehicle control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the IG2 relay from the engine room relay block.
   Fig 7: Inspecting Ignition Relay No. 2

   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
   1 - 2	Always	130 to 235 Ω
   3 - 5	Auxiliary battery voltage is not applied between terminals 1 and 2.	10 kΩ or higher
   	Auxiliary battery voltage is applied between terminals 1 and 2.	Below 1 Ω

   Result

   Result	Proceed to
   OK (w/ Smart Key System)	A
   OK (w/o Smart Key System)	B
   NG	C

3. Install the IG2 relay.

B → See step   12 

C → REPLACE RELAY (IG2) 

A: Go to next step 

1. Disconnect connector D7 from the instrument panel junction block.
   Fig 8: Checking Harness And Connector (Instrument Panel Junction Block - IG2 Relay)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Instrument Panel Junction Block (Main Body ECU)

2. Remove the IG2 relay from the engine room relay block.
   Fig 9: Identifying IG2 Relay & Engine Room Relay Block

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   IG2 relay terminal 1 - Body ground	Power switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component without IG2 relay connected (to Engine Room Relay Block)

4. Connect the instrument panel junction block connector.
5. Install the IG2 relay.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MAIN BODY ECU) 

1. Disconnect the ignition switch assembly connector.
   Fig 10: Checking Harness And Connector (Ignition Switch Assembly - IG2 Relay)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the IG2 relay from the engine room relay block.
   Fig 11: Identifying IG2 Relay & Engine Room Relay Block

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   IG2 relay terminal 1 - Body ground	Ignition switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component without IG2 relay connected (to Engine Room Relay Block)

4. Connect the ignition switch assembly connector.
5. Install the IG2 relay.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   13