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Home >> Suzuki >> 2006 >> Aerio Base, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission) >> Diagnostic Information and Procedures >> DTC P0974 / P0977 (No. 21 / No. 23): Shift Solenoid-A (No. 1) Control Circuit High / Shift Solenoid-B (No. 2) Control Circuit High >> DTC Troubleshooting

DTC Troubleshooting

WARNING: This page is about a different variant/trim than selected.
DTC TROUBLESHOOTING CHART

Step Action YES NO
Was "A/T System Check" performed?  Go to Step 2. Go to A/T SYSTEM CHECK .
Check shift solenoid valve circuit for IG short 
  1. Turn ignition switch OFF and disconnect TCM connectors.
  2. Check for proper connection to TCM at terminal "G08-4" or "G08-3" of TCM connector.
  3. If OK, turn ignition switch ON and measure voltage between terminal "G08-4" or "G08-3" of disconnected harness side TCM connector and ground.

Is it 0 - 2 V? 
Go to Step 3. "GRY" or "GRN/ORN" circuit shorted to power circuit.
Check shift solenoid valve resistance 
  1. Turn ignition switch OFF.
  2. Disconnect valve body harness connector (1) on transaxle (4).
  3. Check for proper connection to solenoid at "GRY" or "GRN/ORN" circuit.
  4. Check resistance of solenoid. See Fig.

Resistance of shift solenoid valve 
Between shift solenoid valve-A (No. 1) terminal (2) and transaxle: 11 - 16 Ω at 20 °C (68 °F) Between shift solenoid valve-B (No. 2) terminal (3) and transaxle: 11 - 16 Ω at 20 °C (68 °F)
G04591833

 
Is check result satisfactory? 
Go to Step 4. Replace shift solenoid valve or lead wire.
Check shift solenoid circuit for open 
  1. Connect valve body harness connector.
  2. Measure resistance between terminal "G08-4" or "G08-3" of disconnected harness side TCM connector and ground.

Is it 12 - 16 Ω (at 20 °C (68 °F))? 
Intermittent trouble or faulty TCM. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION . If OK, substitute a known-good TCM and recheck. "GRY" or "GRN/ORN" circuit open.