Symptom Related Diagnostic Procedures

Work Flow:

WORK FLOW

NOTE:
- When LCU connectors are disconnected for more than 1 minute such as during trouble diagnoses, the "disconnected" data will be memorized by the BCM. (While BCM memorizes the "disconnected" data, IVMS communication diagnosis of CONSULT-II will display "PAST NO RESPONSE".) Therefore, after reconnecting the LCU connectors, erase the memory.
- To erase the memory, perform the procedure below.
Erase the memory with CONSULT-II or turn the ignition switch to "OFF" position and remove 7.5 A fuse [No. [14] located in the fuse block (J/B)].

PRELIMINARY CHECK

Before starting trouble diagnoses, perform preliminary check. Symptom numbers in the symptom chart correspond with those of preliminary check.

Part 1:

Part 2:

SYMPTOM CHART

DIAGNOSTIC PROCEDURE 1 (Power supply and ground circuit for LCU05)

Power supply circuit check
Check voltage between LCU05 terminal (14) and ground.
(Refer to wiring diagram)

If NG, check the following.
- 40 A fusible link (letter h, located in the fuse, fusible and relay box)
- Circuit breaker-2
- Harness for open or short between circuit breaker-2 and LCU05
- Harness for open or short between fuse and circuit breaker-2

Ground circuit check
Check continuity between LCU05 terminal (14) and ground.
(Refer to wiring diagram.)

DIAGNOSTIC PROCEDURE 2 (Power supply and ground circuit for tilt telescopic motor)

Power supply circuit check
Check voltage between BCM terminal (104) and ground.
(Refer to wiring diagram)

If NG, check the following.
- 40 A fusible link (letter h, located in the fuse, fusible and relay box)
- Circuit breaker-2
- Harness for open or short between circuit breaker-2 and BCM
- Harness for open or short between fuse and circuit breaker-2