DTC P1768 CLUTCH SWITCHING SOLENOID CIRCUIT — Description / Reference Values / On Board Diagnosis Logic / DTC Confirmation Procedure
AT-7102prose procedureAuthoritative TCM-pin/wire-color/solenoid mapping from the descriptive tables in this manual: pin 1 (W/R) = clutch pressure solenoid (P1763/P1766); pin 2 (Y/R) = clutch switching solenoid (P1768); pin 5 (L/W) = shift control solenoid (P1751/P1753); pin 6 (W/G) = line pressure control solenoid (P1756/P1758). The clutch-switching ↔ clutch-pressure positions in the small wiring-diagram pages (AT-7082/85/89/92/96/101) follow the same wire colours but the printed solenoid labels at the bottom of those schematics may be misaligned vs. these descriptive tables; the table mapping here should be treated as authoritative.
Description
NOTE
Hydraulic circuit valve is switched by a signal sent from TCM as follows:
OFF: Forward clutch side
ON: Lock-up clutch side of torque converter
CONSULT-II Reference Value in Data Monitor Mode
NOTE
Remarks: Specification data are reference values.
CLUTCH SW SOL
ConditionWhen Vehicle is stopped.
SpecificationApproximately 0V
CLUTCH SW SOL
ConditionWhen vehicle is driving and lock-up is ON.
SpecificationApproximately 12V
TCM Terminals and Reference Value
NOTE
Remarks: Specification data are reference values.
2
Wire colorY/R
ItemClutch switching solenoid valve
ConditionVehicle is stopped
Judgement standard (Approx.)0V
2
Wire colorY/R
ItemClutch switching solenoid valve
ConditionWhen CVT perform lock-up
Judgement standard (Approx.)12V
On Board Diagnosis Logic
CONSULT-II screen text
IdentifierCLUTCH SW SOL
Malfunction is detected when ...TCM detects malfunction in drive circuit.
Check items (Possible cause)Harness or connectors (The solenoid circuit is open or shorted.); Clutch switching solenoid valve
GST (OBD-II)
IdentifierP1768
Malfunction is detected when ...TCM detects malfunction in drive circuit.
Check items (Possible cause)Harness or connectors (The solenoid circuit is open or shorted.); Clutch switching solenoid valve
MI / NO TOOLS code
IdentifierMI Code No. 1768
Malfunction is detected when ...TCM detects malfunction in drive circuit.
Check items (Possible cause)Harness or connectors (The solenoid circuit is open or shorted.); Clutch switching solenoid valve
Diagnostic Trouble Code (DTC) Confirmation Procedure
CAUTION
Always drive vehicle at a safe speed.
NOTE
If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.
NOTE
After the repair, perform the following procedure to confirm that the malfunction is eliminated.