Dtc P0974 / P0977: Shift Solenoid "A" Control Circuit High / Shift Solenoid "B" Control Circuit High - Suzuki 2006 SX4 Service Manual

5A-54 Automatic Transmission/Transaxle:
Step
3 Check shift solenoid circuit for ground short valve
circuit
1) Disconnect TCM connectors.
2) Check for proper connection to "C06-15" and "C06-16"
terminals of TCM connector.
3) If connections are OK, check continuity between "C06-
15" or "C06-16" terminals of disconnected harness side
TCM connector and ground.
Is continuity indicated?

DTC P0974 / P0977: Shift Solenoid "A" Control Circuit High / Shift Solenoid "B" Control Circuit High

Wiring Diagram
Refer to "DTC P0973 / P0976: Shift Solenoid "A" Control Circuit Low / Shift Solenoid "B" Control Circuit Low".
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC P0974:
Difference between command signal and monitor
signal of shift solenoid valve – A (shift solenoid valve –
A circuit is open or shorted to power supply circuit).
(1 driving cycle detection logic)
DTC P0977:
Difference between command signal and monitor
signal of shift solenoid valve – B (shift solenoid valve –
B circuit is open or shorted to power supply circuit).
(1 driving cycle detection logic)
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and tester, on a level road.
1) Clear DTC.
2) Start engine and run it for 30 seconds.
3) Check DTC.
DTC Troubleshooting
Step
1 Was "A/T System Check" performed?
2 Check shift solenoid valve circuit for IG short
1) Turn ignition switch to OFF position and disconnect TCM
connectors.
2) Check for proper connection to "C06-15" and "C06-16"
terminals of TCM connector.
3) If OK, turn ignition switch to ON position and measure
voltage between "C06-15" or "C06-16" terminals of
disconnected harness side TCM connector and ground.
Is it 0 – 2 V?
Action
• Shift solenoid valve – A (No. 1) or its circuit malfunction.
• Shift solenoid valve – B (No. 2) or its circuit malfunction.
• TCM
Action
Yes
"BRN" or "BLK/YEL"
circuit shorted to
ground.
Trouble area
(P0974)
(P0977)
Yes
Go to Step 2.
Go to Step 3.
No
Intermittent trouble or
faulty TCM. Check for
intermittent referring to
"Intermittent and Poor
Connection Inspection
in Section 00". If OK,
substitute a known-
good TCM and recheck.
S6RW0C5104032
No
Go to "A/T System
Check".
"BRN" or "BLK/YEL"
circuit shorted to power
circuit.