Suzuki 2006 SX4, Service Manual

Page: 642 / 1478

5A-54 Automatic Transmission/Transaxle:
DTC P0974 / P0977: Shift Solenoid “A” Control Circuit High / Shift Solenoid “B” Control Circuit High
S6RW0C5104032
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 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
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?
“BRN” or “BLK/YEL”
circuit shorted to
ground. 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.
Step Action Yes No
DTC detecting condition Trouble area
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)
• Shift solenoid valve – A (No. 1) or its circuit malfunction.
(P0974)
• Shift solenoid valve – B (No. 2) or its circuit malfunction.
(P0977)
• TCM
Step Action Yes No
1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check”.
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?
Go to Step 3. “BRN” or “BLK/YEL”
circuit shorted to power
circuit.