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DTC P0773 [JA5AX-EL]

id050206809400

DTC P0773 | Neutral shift solenoid valve circuit malfunction (open/short)
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DETECTION CONDITION | • Open or short in neutral shift solenoid signal system (while TCM monitors solenoid output voltage, the voltage that differs from the ON/OFF signal output by CPU in TCM is detected). Diagnostic support note: • This is continuous monitor (CCM). • MIL does not illuminate. • PENDING CODE is not available. • FREEZE FRAME DATA is not available. • AT warning light indication. • DTC is stored in TCM memory.
POSSIBLE CAUSE | • Open circuit between neutral shift solenoid valve terminal A and TCM terminal 2D • Short to ground between neutral shift solenoid valve terminal A and TCM terminal 2D • Short to power between neutral shift solenoid vale terminal A and TCM terminal 2D • Neutral shift solenoid valve malfunction • Damaged connector between neutral shift solenoid valve and TCM • TCM malfunction

## Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Bulletins and/or on-line repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to available repair information. • If vehicle is not repaired, go to next step.
No | Go to next step.
2 | INSPECT TERMINAL COMPONENT NO.1 (12-PIN) FOR POOR CONNECTION • Turn ignition key to OFF. • Disconnect terminal component No.1 (12-pin). • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.). • Are terminals okay? | Yes | Go to next step.
No | Repair or replace terminals, then go to Step 12.
3 | INSPECT RESISTANCE • Check resistance between terminal component No.1 (12-pin) terminal H (transaxle case side) and body ground. • Is resistance within 14-18 ohms? (See SOLENOID VALVE INSPECTION [JA5AX-EL].) | Yes | Go to Step 8.
No | Go to next step.
4 | INSPECT COUPLER COMPONENT (10-PIN) FOR POOR CONNECTION • Disconnect coupler component (10-pin) connector. • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.). • Is terminal okay? | Yes | Go to next step.
No | Repair or replace terminal, then go to Step 12.
5 | INSPECT RESISTANCE • Check resistance between coupler component (10-pin) terminal B (part side) and body ground. • Is resistance within 14-18 ohms? (See SOLENOID VALVE INSPECTION [JA5AX-EL].) | Yes | Repair or replace terminal component No.1 (12-pin), then go to Step 12.
No | Go to next step.
6 | INSPECT NEUTRAL SHIFT SOLENOID VALVE CONNECTOR FOR POOR CONNECTION • Disconnect neutral shift solenoid valve connector. • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.). • Is terminal okay? | Yes | Go to next step.
No | Repair or replace terminal, then go to Step 12.
7 | INSPECT RESISTANCE • Check resistance between neutral shift solenoid valve connector terminal A (part side) and body ground. • Is resistance within 14-18 ohms? (See SOLENOID VALVE INSPECTION [JA5AX-EL].) | Yes | Repair or replace coupler component (10-pin), then go to Step 12.
No | Verify neutral shift solenoid valve installation. • If neutral shift solenoid valve is installed correctly, replace neutral shift solenoid valve, then go to Step 12 (See SOLENOID VALVE REMOVAL/INSTALLATION [JA5AX-EL].)
8 | INSPECT TCM CONNECTOR FOR POOR CONNECTION • Disconnect TCM connector. • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.). • Are terminals okay? | Yes | Go to next step.
No | Repair terminals, then go to Step 12.
9 | INSPECT TERMINAL COMPONENT NO.1 (12-PIN) CIRCUIT FOR OPEN CIRCUIT • Check continuity between TCM terminal 2D (harness-side) and terminal component No.1 (12-pin) terminal H (harness-side). • Is there continuity between terminals? | Yes | Go to next step.
No | Repair or replace harness, then go to Step 12.
10 | INSPECT TERMINAL COMPONENT NO.1 (12-PIN) CIRCUIT FOR SHORT TO POWER • Turn ignition key to ON (engine OFF). • Check voltage at terminal component No.1 (12-pin) terminal H (harness-side). • Is voltage 0 V? | Yes | Go to next step.
No | Repair or replace harness, then go to Step 12.
11 | INSPECT TCM CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Check continuity between TCM terminal 2D (harness-side) and body ground. • Is there any continuity? | Yes | Repair or replace harness, then go to next step.
No | Go to next step.
12 | VERIFY TROUBLESHOOTING OF DTC P0773 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory using WDS or equivalent. • Drive vehicle in D range and make sure that gears shift smoothly from 1GR to 5GR. • Is same DTC present? | Yes | Replace TCM, then go to next step. (See TCM REMOVAL/INSTALLATION [JA5AX-EL].)
No | Go to next step.
13 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [JA5AX-EL].) • Is there any DTC present? | Yes | Go to applicable DTC inspection.
No | Troubleshooting completed.