Inspection Procedure G-3

Rear Wiper and Washer: When the Selector Lever is Moved to "R" Position during the Rear Wiper Operation, the Rear Wiper does not Operate at the Continuous Mode

"R" Position During Rear Wiper Operation Circuit:

NOTE: This troubleshooting requires use of scan tool MB991502 and SWS monitor kit MB991862. For details of how to use the SWS monitor, refer to "How to use SWS monitor".

CIRCUIT OPERATION
The ETACS-ECU operates the rear wiper consecutively approximately twice when the selector lever is moved to "R" position while the rear wiper is turned on.

TECHNICAL DESCRIPTION (COMMENT)
If the rear wiper does not work consecutively approximately twice, the park/neutral position switch ("R" position) or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS
- Malfunction of the park/neutral position switch
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
- MB991223: Test Harness Set
- MB991502: Scantool(MUT-II)
- MB991862: SWS monitor kit

STEP 1. Check the rear wiper.

Q: Does the rear wiper operate?

YES: Go to STEP 2.

NO: Refer to Inspection Procedure G-1 "Rear wiper does not work at all."

STEP 2. Check the input signal by using service data of the SWS monitor.
Set each switch to the following condition before checking input signal from the park/neutral position switch ("R" position).
- ignition switch: ON
- rear wiper switch: ON
- Shift position: R position









CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502.

1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.




3. Select "REAR WIPER-REV. INTERLOCK" (FUNCTION DIAG), and check that normal conditions are displayed on the items described in the table.

Q: Is normal condition displayed on the "PNP SW (R)"?

YES: Replace the ETACS-ECU. When the selector lever is moved to the "R" position, the rear wiper should operate consecutively approximately twice.

NO: Refer to Inspection Procedure L-3 "ETACS-ECU does not receive "R" position signal from the park/neutral position switch."