TROUBLE DIAGNOSES - Self-diagnosis (Cont'd) LOCK-UP SOLENOID CIRCUIT CHECK
AT-41flowchartApplicable to A/T (automatic transmission) equipped vehicles only. Terminal cord assembly connector located in engine compartment. Wire color GY/R (Gray with Red stripe) at terminal 22.
Self-diagnosis (Cont'd) LOCK-UP SOLENOID CIRCUIT CHECK
Lock-up Solenoid Circuit Overview
Lock-up solenoidTerminal cord assembly— internal connection
Terminal cord assemblyA/T control unit— terminal 22
Lock-up Solenoid Circuit Check
1
CHECK GROUND CIRCUIT.
1. [ignition OFF]
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal (22) and ground.
Resistance: 2.5 - 5Ω
N.G.
1. Remove oil pan. — Refer to "ON-VEHICLE SERVICE".
1. Remove oil pan. — Refer to "ON-VEHICLE SERVICE".
2. Check the following items.
● Lock-up solenoid — Refer to "Electrical Components Inspection".
● Harness continuity of terminal cord assembly
O.K.
2
CHECK POWER SOURCE CIRCUIT.
1. [ignition OFF]
2. Disconnect A/T control unit 16-pin connector.
3. Check resistance between terminal (22) and A/T control unit terminal (22).
Resistance: Approximately 0Ω
4. Reinstall any part removed.
N.G.
Repair or replace harness between A/T control unit and terminal cord assembly. (Main harness)
O.K.
3
Perform self-diagnosis after driving for a while.
N.G.
1. Perform A/T control unit input/output signal inspection.
1. Perform A/T control unit input/output signal inspection.
2. If N.G., recheck A/T control unit pin terminals for damage or connection of A/T control unit harness connector.
O.K.
INSPECTION END
| Specification | Value |
|---|---|
| Resistance between terminal (22) and ground (Ground circuit check)Terminal cord assembly connector disconnected in engine compartment | 2.5 - 5Ω |
| Resistance between sub-harness terminal (22) and A/T control unit terminal (22) (Power source circuit check)A/T control unit 16-pin connector disconnected | Approximately 0Ω |
Resistance between terminal (22) and ground (Ground circuit check)Terminal cord assembly connector disconnected in engine compartment
2.5 - 5Ω
Resistance between sub-harness terminal (22) and A/T control unit terminal (22) (Power source circuit check)A/T control unit 16-pin connector disconnected
Approximately 0Ω
See also
ON-VEHICLE SERVICE · Electrical Components Inspection · A/T control unit input/output signal inspection