Inspection Procedure P-9

ETACS-ECU does not Receive a Signal from the Liftgate Latch Switch or Trunk Lid Latch Switch .

Liftgate Latch Switch <ECLIPSE> Or Trunk Lid Latch Switch <ECLIPSE SPYDER> Input Circuit Part 1:

Liftgate Latch Switch <ECLIPSE> Or Trunk Lid Latch Switch <ECLIPSE SPYDER> Input Circuit Part 2:

CIRCUIT OPERATION
The ETACS-ECU uses the input signal from the liftgate latch switch or the trunk lid latch switch to operate the following functions.

TECHNICAL DESCRIPTION (COMMENT)
The liftgate latch switch or the trunk lid latch switch input signal is used to operate the theft-alarm system, luggage compartment light and trunk light . If the signal fails, these function will not work normally.

TROUBLESHOOTING HINTS
- Malfunction of the liftgate latch
- Malfunction of the trunk lid latch
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
- MB991223: Harness Set
- MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicles communication interface
- MB991827: MUT-III USB cable
- MB991911: MUT-III Main harness B

STEP 1. Check the liftgate latch switch or the trunk lid latch switch .

Q: Is the liftgate latch switch or the trunk lid latch switch in good condition?

YES: Go to Step 2 or Go to Step 5 .

NO: Replace the liftgate latch switch or trunk lid latch switch . The input signal from the liftgate latch switch or the trunk lid latch switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

STEP 2. Check the trunk lid latch switch ground circuit at liftgate latch switch connector F-16 or the trunk lid latch switch connector F-16 .

1. Disconnect liftgate latch switch connector F-16 or trunk lid latch switch connector F-16 and measure at the harness side.

2. Measure the resistance between terminal 2 and ground.
- The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with this range?

YES: Go to Step 5.

NO: Go to Step 3.

STEP 3. Check liftgate latch switch connector F-16 or trunk lid latch switch connector F-16 for damage.

Q: Is liftgate latch switch connector F-16 or trunk lid latch switch connector F-16 in good condition?

YES: Go to Step 4.

NO: Repair or replace it. Refer to Harness Connector Inspection. The input signal from the liftgate latch switch or the trunk lid latch switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

STEP 4. Check the harness wire between liftgate latch switch connector F-16 (terminal 2) or trunk lid latch switch connector F-16 (terminal 2) and ground.

Q: Is the harness wire between liftgate latch switch connector F-16 (terminal 2) or trunk lid latch switch connector F-16 (terminal 2) and ground in good condition?

YES: There is no action to be taken.

NO: Repair it. The input signal from the liftgate latch switch or the trunk lid latch switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

STEP 5. Check liftgate latch switch connector F-16 , liftgate light switch connector F-13 , trunk lid latch switch connector F-16 or trunk light switch connector F-13 and ETACS-ECU connector C-118 or C-117 for damage.

Q: Are liftgate latch switch connector F-16 , liftgate light switch connector F-13 , trunk lid latch switch connector F-16 or trunk light switch connector F-13 and ETACS-ECU connector C-118 or C-117 in good condition?

YES: Go to Step 6.

NO: Repair or replace them. Refer to Harness Connector Inspection. The input signal from the liftgate latch switch or the trunk lid latch switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

STEP 6. Check the harness wires between liftgate latch switch connector F-16 (terminal 1) , liftgate light switch connector F-13 (terminal 1) , trunk lid latch switch connector F-16 (terminal 1) or trunk light switch connector F-13 (terminal 1) and ETACS-ECU connector C-118 (terminal 62) or C-117 (terminal 37) .

NOTE: After checking intermediate connector C-90, check the wires. If intermediate connector C-90 is damaged, repair or replace it. Refer to Harness Connector Inspection.

Q: Are the harness wires between liftgate latch switch connector F-16 (terminal 1) , liftgate light switch connector F-13 (terminal 1) , trunk lid latch switch connector F-16 (terminal 1) or trunk light switch connector F-13 (terminal 1) and ETACS-ECU connector C-118 (terminal 1) or C-117 (terminal 1) in good condition?

YES: Replace the ETACS-ECU. The input signal from the liftgate latch switch or the trunk lid latch switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

NO: Repair them. The input signal from the liftgate latch switch or the trunk lid latch switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.