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. Read and record the DTCs and freeze frame data.
5. Select the following menu items: 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 power switch on (IG) after clearing DTCs.

   HINT: 

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

2. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
3. Check if DTCs are output.

   Result

   Result	Proceed to
   Either of the following is met: U0140-146 is also output. 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

D → See step   7 

C → See step   13 

B → See step   12 

A: Go to next step 

1. Remove the D-IG1-3 fuse from the driver side junction block.
   Fig 1: Identifying D-IG1-3 Fuse

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

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   D-IG1-3 Fuse	Power switch off	Below 1 Ω

NG → REPLACE FUSE (D-IG1-3) 

OK: Go to next step 

1. Power switch off.
   Fig 2: Identifying DF From Driver Side Junction Block

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connector DF from the driver side junction block.
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   DF-1 - Body ground	Power switch off	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVER SIDE JUNCTION BLOCK - AUXILIARY BATTERY) 

OK: Go to next step 

1. Power switch off.
   Fig 3: Checking Power Source Circuit (Passenger Side Junction Block)

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2. Connect connector PA to the passenger side junction block.
3. Power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   PA-53 - Body ground	Power switch on (IG)	11 to 14 V

   HINT: 

   Measure from the back of the connector with the connector connected.

NG → CHECK CONNECTOR CONNECTION CONDITION (PASSENGER SIDE JUNCTION BLOCK) 

OK: Go to next step 

1. Power switch off.
   Fig 4: Connector DA

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connector DA from the driver side junction block.
3. Power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   DA-40 - Body ground	Power switch off	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE DRIVER SIDE JUNCTION BLOCK 

1. Turn the power 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 power switch on (IG).
4. Select the following menu items: 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   14 

A: Go to next step 

1. Turn the power switch off.
   Fig 5: Disconnecting Connector A74 From Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connector A74 from the hybrid vehicle control ECU.
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A74-4 (IGSW) - Body ground	Power switch off	Below 1 V

NG → See step   9 

OK → See step   15 

1. Turn the power switch off.
2. Remove the IG2 relay from the engine room No. 2 relay block.
   Fig 6: Identifying IG2 Relay For Engine Room No. 2 Relay Block

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3. Measure the voltage according to the value(s) in the table below.
   Fig 7: Disconnecting Connector A74 From Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A74-4 (IGSW) - Body ground	Power switch off	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 8: PCV RELAY (IG2 RELAY)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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

NG → REPLACE RELAY (IG2 RELAY) 

OK: Go to next step 

1. Turn the power switch off.
2. Disconnect connector L12 from the driver side junction block.
   Fig 9: Identifying Driver Side Junction Block (Main Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the voltage according to the value(s) in the table below.
   Fig 10: Identifying IGCT2 Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   Engine room No. 2 relay block IG2 relay terminal 1 - Body ground	Power switch off	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE DRIVER SIDE JUNCTION BLOCK