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 lift-gate 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
- The liftgate latch may be defective
- The trunk lid latch may be defective
- The ETACS-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

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

STEP 1. Check liftgate latch switch connector F-16 or trunk lid latch switch connector F-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

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

YES: Go to Step 2.

NO: Repair or replace the damaged component(s). 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.

<Liftgate Latch Switch (ECLIPSE)>:

<Trunk Lid Latch Switch (ECLIPSE SPYDER)>:

STEP 2. 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 3 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 3. Check the ground circuit to the trunk lid latch switch. Measure the resistance 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 the resistance available at the wiring harness side of the connector.

2. Measure the resistance between terminal 2 and ground.
- The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES: Go to Step 5.

NO: Go to Step 4.

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: No action is necessary and testing is complete.

NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. If 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 ETACS-ECU connector C-118 or C-117 for damage.

Q: Is ETACS-ECU connector C-118 or C-117 in good condition?

YES: Go to Step 6.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. If 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: Also check intermediate connector C-90 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-90 is damaged, Repair or replace the damaged component(s) as described in 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: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. 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.