Workshop Manuals Factory service & repair Rover
Rover Rover 600 Repair Manual - Volumes 1 and 2 - 2nd Edition18 · Electrical
18 · Electrical

Input Test

Make
Rover
Model
600 Rover 600 Repair Manual - Volumes 1 and 2 - 2nd Edition
Section
Repairs › Input Test
ElectricalInput Test · page 1 of 4

Input Test

CAUTION:

  • All SRS electrical wiring harnesses are covered with yellow outer insulation.
  • Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.
  • Before disconnecting the SRS wiring harness, turn the ignition switch off, disconnect the negative and positive battery cables, and wait at least three minutes.
  1. Remove the dashboard lower cover (see Windscreen wiper replacement).
  2. Remove the headlight washer control unit from its socket.
  3. Inspect the control unit and socket terminals to be sure they are all making good contact.
  • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
  • If the terminals look OK, make the following input tests at the socket.
  • – If a test indicates a problem, find and correct the cause, then recheck the system.
  • – If all the input test prove OK, the control unit must be faulty; replace it.

Note: LHD type is shown, RHD type is symmetrical.

Diagram showing headlight washer control unit location and terminal side view with wire colors WHT/RED, RED/YEL, GRN/WHT, BLK, WHT/BLK

A     Headlight washer control unit
B     View from terminal side

No.TerminalTest conditionTest: Desired resultPossible cause if result is not obtained
1 BLK Under all conditions Check for continuity to earth:
There should be continuity.		 ● Poor earth (LHD: G402, RHD: G203)
● An open in the wire
2 WHT/BLK Under all conditions Check for voltage to earth:
There should be battery voltage.		 ● Blown No.28 (30A) fuse in the engine compartment fuse/relay box
● Faulty headlight washer switch
● An open in the wire
3 GRN/WHT Ignition switch and headlight washer ON Check for voltage to earth:
There should be battery voltage.		 ● Blown No.5 (7.5A) fuse in the passenger compartment fuse/relay box
● Faulty headlight washer switch
● An open in the wire
4 WHT/RED Connect the WHT/BLK terminal to the WHT/RED terminal with a jumper wire Check the pump It should run ● Faulty headlight washer pump
● Poor earth (G301)
● An open in the wire
5 RED/YEL Ignition switch and headlight switch ON (full or dim dip) Check for voltage to earth:
There should be battery voltage.		 ● Blown No.27 (10A) fuse in the engine compartment fuse/relay box
● Faulty combination light switch
● An open in the wire

Parts & tools for this job For Rover 600

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