Automatic Transmission/Transaxle: 5A-87
Troubleshooting
Brake Interlock System Inspection
S7RS0B5104047
1) Check that select lever cannot be moved to any
other range from “P” range position when ignition
switch key is at ACC position, at LOCK position or it
is removed from keyhole of ignition switch, or brake
pedal is not depressed.
2) Shift select lever to “P” range position, release knob
button and check for the following.
• Ignition key can be turned between LOCK and
ACC positions back and forth and also it can be
removed from ignition switch.
Step Action Yes No
1 Check TCM back-up power circuit
1) Disconnect TCM connector with ignition switch OFF.
2) Check for proper connection to TCM at “C34-24”
terminal.
3) If OK, check voltage at terminal “C34-24” of
disconnected TCM connector.
Is it 10 – 14 V?
Go to Step 2. “WHT/RED” circuit open
or shorted to ground.
2 Check TCM power circuit
1) Disconnect TCM connector with ignition switch OFF.
2) Check for proper connection to TCM at “C34-6” terminal.
3) If OK, turn ignition switch ON and check voltage at
terminal “C34-6” of disconnected TCM connector.
Is it 10 – 14 V?
Go to Step 4. Go to Step 3.
3 Check A/T relay operation
1) Check A/T relay operation referring to “A/T Relay
Inspection”.
Is check result satisfactory?
“YEL/BLK”, “YEL/BLU”,
“LT GRN/BLK” or “BLK”
circuit for power supply
open.
Replace A/T relay.
4 Check TCM ground circuit
1) Turn ignition switch OFF.
2) With TCM connectors disconnected, check for proper
connection to TCM at “C34-1” / “C34-23” terminal.
3) If OK, check resistance between “C34-1” / “C34-23”
terminal of disconnected TCM connector and body
ground.
Is continuity indicated?
TCM power and ground
circuits are in good
condition.
“BLK” circuit for TCM
ground open.
I4RS0A510047-01
I4RS0A510048-01
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