P0842

DTC P0842 / P0843

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

P0842 / P0843

NOTE:

- If other DTC than P0842 or P0843 is newly detected during this "DTC Confirmation Procedure", troubleshoot the newly detected DTC in first.
- Confirm that the following conditions are met in this procedure.

- Battery voltage > 10.5 V
- CVT fluid temperature at engine start ≥ -20 °C (-4 °F)

1) Push engine switch to change ignition mode to "ON", and leave ignition mode in "ON" for 10 sec.

DTC Troubleshooting


1. Was "CVT System Check" performed?
YES
Go to Step 2.
NO
Go to CVT System Check CVT System Check.
2. Primary pressure sensor signal circuit and ground circuit check
Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "C142", "E19" and "E20" connectors.
Check for proper terminal connection to "C142", "E19" and "E20" connectors.
If connections are OK, check the following points.
Resistance of "A1" and "C1" circuits: less than 1
Resistance of "A1" circuit between "C142" connector and ground: infinity
Resistance between "A1" circuit terminal and each terminal at "C142" connector: infinity
Voltage of "A1" and "C1" circuits: 0 - 1 V (with ignition mode of keyless push start system in "ON")
Are they in good condition?
YES
Go to Step 3.
NO
Repair or replace defective wire harness.
3. Primary pressure sensor check
Connect "C142", "E19" and "E20" connectors.
Check voltage between "A1" circuit and ground. Inspection of TCM and Its Circuits
Is it in good condition?
YES
Substitute a known-good TCM and recheck DTC. Service and Repair
NO
Replace primary pressure sensor (CVT assembly). CVT Assembly Dismounting and Remounting