Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 687
5A–44
BRAKE CONTROL SYSTEM
Chart C-2 Transmission Input Inspection Procedure
Step
Action
Yes
No
1
1. Turn the key off.
2. Disconnect EHCU connector.
Is there continuity between EHCU connector terminals 6 and 15
(Gear position-P(A/T), N(M/T))?
Shorted switch
harness.
Repair switch or
harness.
Go to Step 6
Go to Step 2
2
Is the vehicle an A/T model?
Go to Step 3
Go to Step 4
3
Turn the key on and measure voltage between EHCU connector
terminals 6 and 15.
Is there less than 6V when the gear position is L, and R(Battery
voltage 12V)?
Go to Step 5
Transmission SW
trouble.
Disconnected
harness.
Repair SW and
harness.
Go to Step 6
4
Turn the key on and measure the voltage between EHCU
connector terminal 6 and 15.
Is there more than 9.6V when the gear position is 1, 2, R(Battery
voltage 12V)?
Go to Step 5
Transmission SW
trouble.
Disconnected
harness.
Repair SW and
harness.
Go to Step 6
5
Measure the voltage between EHCU connector terminals 6 and
15.
Is there 6.6 to 9.0V when the gear position is 3, 4, 5 and N(M/T) or
2,3,D,N and P(A/T)(Battery voltage 12V)?
Go to Step 6
Transmission SW
trouble.
Disconnected
harness.
Repair SW and
harness.
Go to Step 6
6
1. Reconnect all components and ensure all components are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?
Repeat the “Basic
diagnostic flow
chart.”
Go to Step 6