Mitsubishi Lancer (4A9 engine). Manual — part 126
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-166
Tool
Number
Name
Use
MB990784
Ornament
remover
Removal of rear combination lamp
assembly and tail lamp assembly
MB990784
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-167
MB991955
a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991825
f. MB991826
M.U.T.-III sub-
assembly
a. Vehicle
Communicatio
n Interface
(V.C.I.)
b. M.U.T.-III USB
cable
c. M.U.T.-III main
harness A
(Vehicles with
CAN
communication
system)
d. M.U.T.-III main
harness B
(Vehicles
without CAN
communication
system)
e. M.U.T.-III
measure
adapter
f. M.U.T.-III
trigger harness
CAUTION
For vehicles with CAN
communication, use M.U.T.-III
main harness A to send simulated
vehicle speed. If you connect
M.U.T.-III main harness B instead,
the CAN communication does not
function correctly.
Diagnosis code, service data and
actuator test check.
MB991223
a. MB991219
b. MB991220
c. MB991221
d. MB991222
Harness set
a. Check harness
b. LED harness
c. LED harness
adapter
d. Probe
Continuity check and voltage
measurement at harness wire or
connector
a. For checking connector pin
contact pressure
b. For checking power supply circuit
c. For checking power supply circuit
d. For connecting a locally sourced
tester
Tool
Number
Name
Use
MB991910
MB991826
MB991955
MB991911
MB991824
MB991827
MB991825
a
b
c
d
e
f
DO NOT USE
MB991223
a
d
c
b
DO NOT USE
BA
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-168
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC
TROUBLESHOOTING
M1541402500133
Refer to GROUP 00
− Contents of troubleshooting .
DIAGNOSIS FUNCTION
M1541400900083
HOW TO READ DIAGNOSIS CODE
Refer to GROUP 00
− Diagnosis function .
HOW TO ERASE DIAGNOSIS CODE
Refer to GROUP 00
− Diagnosis function .
DIAGNOSIS CODE CHART
M1541400200192
CAUTION
On troubleshooting, if the ignition switch is turned ON while disconnecting connector(s), diagnosis
code(s) associated with other system may be set. On completion, confirm all systems for diagnosis
code(s). If diagnosis code(s) are set, erase them all.
DIAGNOSIS CODE PROCEDURES
Code No.B16A7 Tail lamp (RH) circuit short <Short circuit in the position lamp (RH) circuit or the tail
lamp (RH) circuit>
MB992006
Extra fine probe
Continuity check and voltage
measurement at harness wire or
connector
Tool
Number
Name
Use
MB992006
Diagnosis code No.
Diagnostic item
Reference page
B16A7
Tail lamp (RH) circuit short <Short circuit in the
position lamp (RH) circuit or the tail lamp (RH)
circuit>
B16A8
Tail lamp (LH) circuit short <Short circuit in the
position lamp (LH) circuit, tail lamp (LH) circuit or the
licence plate lamp circuit>
ACA00916
A-53 (B)
Connector: A-53
AE
ACA00886
BC
Connectors: C-304, C-311 <LHD>
ETACS-ECU
C-304
C-311
REAR COMBINATION LAMP
CHASSIS ELECTRICAL
54A-169
DIAGNOSTIC FUNCTION
When a short circuit is detected in the position lamp
circuit or the tail lamp circuit, the ETACS-ECU sets
the diagnosis code No. B16A7.
JUDGEMENT CRITERIA
The problem detection of tail lamp is made based on
the digital feed back signal (input signal to ETACS-
ECU) which operates the tail lamp. When the ignition
switch is ON, the ETACS-ECU determines the tail
lamp circuit state from the load placed on the line.
After 100 ms has elapsed since the start of the
check, the ETACS-ECU performs a sampling with
each 10 ms. If an abnormality is detected, it
increases the counter by 2, and when no abnormality
is detected, it decreases the counter by 1. Once the
counter reaches "10," the ETACS-ECU sets the diag-
nosis code No. B16A7 if no load is detected.
PROBABLE CAUSES
• Malfunction of bulbs
• Damaged harness wires and connectors
• Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Bulb check
Check the bulb(s) of the lamp that does not illumi-
nate.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the bulb(s) of the lamp that does
not illuminate.
STEP 2. Connector check: A-53 headlamp
assembly (RH) connector, F-08 rear combination
lamp (RH) connector and F-09 tail lamp (RH)
<LANCER> connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
STEP 3. Resistance measurement at the A-53
headlamp assembly (RH) connector, F-08 rear
combination lamp (RH) connector and F-09 tail
lamp (RH) <LANCER> connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the resistance between the connector
terminal of lamp which does not illuminate and
the body earth.
• Measure the resistance between the A-53
headlamp assembly (RH) connector terminal
No. 6 and the body earth.
• Measure the resistance between the F-08
rear combination lamp (RH) connector termi-
nal No. 1 and the body earth.
• Measure the resistance between the F-09 tail
lamp (RH) connector terminal No. 1 and the
body earth. <LANCER>
OK: Continuity exists (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
ACA00887
BD
Connectors: C-304, C-311 <RHD>
ETACS-ECU
C-304
C-311
ACA00901AE
F-08
F-09 (GR)
Connectors: F-08, F-09 <LANCER>
AC801775BV
Connector: F-08 <LANCER SPOTBACK>
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