DTC P316B-845: On-Board Charger Unable to Stop: Procedure

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

   Result

   Result	Proceed to
   Only P316B-845 is output or P316B-845 and DTCs other than the ones in the table below are also output.	A
   Any of the following DTCs are also output.	B

   DTC No.	Relevant Diagnosis
   P0A1D-144, 148, 162, 721, 722, 723, 787, 818, 821, 823	Hybrid Powertrain Control Module
   P2511-149	HV CPU Power Relay Sense Circuit Intermittent No Continuity
   U019B-440	Lost Communication with Battery Charger Control Module

   HINT: 

   P316B-845 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   6 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Plug-in Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   Only P316B-845 is output or P316B-845 and DTCs other than the ones in the table below are also output.	A
   Any of the following DTCs are also output.	B

   DTC No.	Relevant Diagnosis
   P2511-441	Reset Detected
   P31FC-410	On-Board Charger Status Circuit
   U0293-439, 449	Lost Communication with Hybrid Powertrain Control Module

   HINT: 

   P316B-845 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. Turn the power switch on (IG).
2. Measure the voltage according to the value(s) in the table below.
   Fig 1: Checking z12 & S31 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   z12-18 (CHRQ) - S31-14 (E1)	Power switch on (IG)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Plugin Charge Control ECU Assembly)

3. Turn the power switch off.

NG → See step   5 

OK: Go to next step 

B → See step   9 

A → See step   8 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

2. Disconnect connector z12 from the plugin charge control ECU assembly.
3. Connect the cable to the negative (-) auxiliary battery terminal.
4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.
   Fig 2: Checking Z12 & S29 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   z12-18 (CHRQ) - S29-5 (CHG)	Power switch on (IG)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Plugin Charge Control ECU Assembly)
   *b	Component with harness connected (Electric Vehicle Charger Assembly)

   HINT: 

   Turning the power switch on (IG) with the plugin charge control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Disconnect the cable from the negative (-) auxiliary battery terminal.
8. Connect the plugin charge control ECU assembly connector.

NG → See step   8 

OK → See step   9