DTC P176D-12: IG2 Signal (Gear Shift Control Module "A") Circuit Short to Battery [10/2022 - ]: Procedure
- CHECK TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU) (IGP TERMINAL VOLTAGE)
Pre-procedure1
- Disconnect the C35 transmission floor shift assembly (shift control ECU) connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition Result C35-1 (IGP) - Body ground Ignition switch off Below 1 V V Result
Proceed to OK NG
Post-procedure1
- Connect the transmission floor shift assembly (shift control ECU) connector.
Result:
NG
See step 4
Result:
OK
See step 2
- CLEAR DTC
Pre-procedure1
- Turn the ignition switch to ON.
Post-procedure1
- Turn the ignition switch off.
- Disconnect the GTS.
- Leave the vehicle as is for 60 seconds or more.NOTE:
- Do not connect the GTS.
- Do not depress the brake pedal.
- Do not open/close any of the doors.
Result:
NEXT
See step 3
- CHECK DTC OUTPUT
Pre-procedure1
- Turn the ignition switch to ON and wait for 1 minute or more.
- Turn the ignition switch off and wait for 1 minute or more.
- Turn the ignition switch to ON.
- Check for DTCs.
Powertrain > Transmission > Trouble Codes
Result
Result Proceed to P176D-12 is not output A P176D-12 is output B
Post-procedure1
- Turn the ignition switch off.
Result:
A
END
Result:
B
REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU). Refer to REMOVAL [10/2022 - ]
- CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ECU - IGP NO. 1 RELAY)
Pre-procedure1
- Disconnect the C35 transmission floor shift assembly (shift control ECU) connector.
- Remove the IGP NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition Result C35-1 (IGP) - Body ground Always Below 1 V V Result
Proceed to OK NG
Post-procedure1
- Install the IGP NO. 1 relay.
- Connect the transmission floor shift assembly (shift control ECU) connector.
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 5
- INSPECT RELAY (IGP NO. 1)
Pre-procedure1
- Remove the IGP NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Battery voltage applied between terminals 1 and 2 Below 1 Ω Ω Result
Proceed to OK NG
Post-procedure1
- Install the IGP NO. 1 relay.
Result:
NG
REPLACE RELAY (IGP NO. 1)
Result:
OK
See step 6
- INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
Pre-procedure1
- None
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition Result A7-24 (IGPD) - Body ground Ignition switch off Below 1 V V Result
Proceed to OK NG *a Component with harness connected
(Certification ECU (Smart Key ECU Assembly))
Post-procedure1
- None
Result:
OK
CHECK FOR INTERMITTENT PROBLEMS. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]
Result:
NG
See step 7
- CHECK HARNESS AND CONNECTOR (IGP NO. 1 RELAY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
Pre-procedure1
- Remove the IGP NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
- Disconnect the A7 certification ECU (smart key ECU Assembly) connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition Result A7-24 (IGPD) - Body ground Ignition switch off Below 1 V V Result
Proceed to OK NG
Post-procedure1
- Connect the certification ECU (smart key ECU Assembly) connector.
- Install the IGP NO. 1 relay.
Result:
OK
CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (START FUNCTION). Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR