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Home / DTC / B1244 — Rear wiper relay circuit

B1244 — Rear wiper relay circuit

Detailed page for trouble code B1244.

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22,491specific
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Code

B1244

ALFA ROMEO B — Body

Rear wiper relay circuit

Brand: ALFA ROMEO
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or sticking rear wiper relay
  • Blown fuse protecting the rear wiper circuit
  • Open, shorted or high resistance wiring between relay, wiper motor, switch and BCM
  • Corroded or loose connector or terminal at relay, motor or fuse box
  • Poor ground at wiper motor or relay ground point
  • Seized or mechanically obstructed rear wiper motor

Symptoms

  • Rear wiper inoperative (no movement)
  • Intermittent rear wiper operation
  • Rear wiper stuck in ON or OFF position
  • No audible relay click when rear wiper activated
  • Blown fuse after attempting to operate rear wiper
  • Other body electrical anomalies if BCM output affected

What to check

  • Read stored DTCs and freeze frame data with a diagnostic scanner; note any related body module codes
  • Visual inspection of rear wiper relay, fuses and fuse box for damage or corrosion
  • Inspect wiring harness and connectors for damage, corrosion, pin push-out or water ingress
  • Check ground(s) for continuity and signs of corrosion; clean and secure grounding points
  • Operate rear wiper switch while listening for relay click and observing fuse behavior
  • Swap relay with identical known-good relay (if available) to check function

Signal parameters

  • Supply voltage at relay supply terminal: ~12 V with ignition ON (11–14 V typical)
  • Control signal from BCM/switch to relay coil: near 0 V (ground) when activated or near battery voltage when deactivated depending on circuit type; expect a distinct change when switch is operated
  • Relay coil resistance (typical small automotive relay): ~50–200 Ω (varies by relay)
  • Wiper motor current draw while running: typically 1–8 A (measure with ammeter); large spikes at start ok but excessive continuous current suggests mechanical/seized motor or short

Diagnostic algorithm

  1. Connect a diagnostic scanner; record DTCs and related modules. Clear codes and attempt to reproduce B1244.
  2. Visually inspect fuse(s) and relay(s) for the rear wiper. Replace any blown fuse and note if it blows again on test.
  3. Swap the rear wiper relay with a known-good identical relay and re-test to see if fault follows the relay.
  4. With ignition ON, measure battery voltage at the relay power terminal. Confirm fused supply is present and stable.
  5. Operate the rear wiper switch while probing the relay coil/control terminal. Verify the controller sends the expected signal (voltage change or ground) to energize the coil.
  6. Check continuity between relay output and rear wiper motor positive terminal. Check continuity to ground from the motor body/ground terminal.
  7. Bench-test the rear wiper motor by applying fused 12 V directly to its power/ground to confirm operation and measure running current. Inspect for mechanical binding.
  8. Inspect and clean connectors at the motor, relay, and BCM. Repair corroded pins or damaged wiring; perform solder/heat-shrink or OEM repair techniques as required.
  9. If wiring and components test OK, check BCM outputs and input signals with a scope or scan tool; consider BCM software updates or replacement if controller outputs are faulty.
  10. After repair, clear codes and road-test; re-scan to confirm B1244 does not return.

Likely causes

  • Faulty rear wiper relay
  • Blown fuse for rear wiper circuit
  • Open or short in wiring to relay or wiper motor
  • Poor ground connection at motor or relay
  • Corroded connector at relay or motor

Fault status

⚠️ Status
Rear wiper relay circuit fault detected. Possible relay, fuse, wiring, connector or BCM output issue. Inspect relay/fuse, wiring and grounds; test motor operation and correct any damaged components before clearing code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1240 B1241 B1243 B1245 U0140
89

Browse 89 ALFA ROMEO manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

ALFA ROMEO

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Code

B1244

FIAT B — Body

Rear wiper relay circuit

Brand: FIAT
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or sticking rear wiper relay
  • Blown fuse protecting the rear wiper circuit
  • Open, shorted or high resistance wiring between relay, wiper motor, switch and BCM
  • Corroded or loose connector or terminal at relay, motor or fuse box
  • Poor ground at wiper motor or relay ground point
  • Seized or mechanically obstructed rear wiper motor

Symptoms

  • Rear wiper inoperative (no movement)
  • Intermittent rear wiper operation
  • Rear wiper stuck in ON or OFF position
  • No audible relay click when rear wiper activated
  • Blown fuse after attempting to operate rear wiper
  • Other body electrical anomalies if BCM output affected

What to check

  • Read stored DTCs and freeze frame data with a diagnostic scanner; note any related body module codes
  • Visual inspection of rear wiper relay, fuses and fuse box for damage or corrosion
  • Inspect wiring harness and connectors for damage, corrosion, pin push-out or water ingress
  • Check ground(s) for continuity and signs of corrosion; clean and secure grounding points
  • Operate rear wiper switch while listening for relay click and observing fuse behavior
  • Swap relay with identical known-good relay (if available) to check function

Signal parameters

  • Supply voltage at relay supply terminal: ~12 V with ignition ON (11–14 V typical)
  • Control signal from BCM/switch to relay coil: near 0 V (ground) when activated or near battery voltage when deactivated depending on circuit type; expect a distinct change when switch is operated
  • Relay coil resistance (typical small automotive relay): ~50–200 Ω (varies by relay)
  • Wiper motor current draw while running: typically 1–8 A (measure with ammeter); large spikes at start ok but excessive continuous current suggests mechanical/seized motor or short

Diagnostic algorithm

  1. Connect a diagnostic scanner; record DTCs and related modules. Clear codes and attempt to reproduce B1244.
  2. Visually inspect fuse(s) and relay(s) for the rear wiper. Replace any blown fuse and note if it blows again on test.
  3. Swap the rear wiper relay with a known-good identical relay and re-test to see if fault follows the relay.
  4. With ignition ON, measure battery voltage at the relay power terminal. Confirm fused supply is present and stable.
  5. Operate the rear wiper switch while probing the relay coil/control terminal. Verify the controller sends the expected signal (voltage change or ground) to energize the coil.
  6. Check continuity between relay output and rear wiper motor positive terminal. Check continuity to ground from the motor body/ground terminal.
  7. Bench-test the rear wiper motor by applying fused 12 V directly to its power/ground to confirm operation and measure running current. Inspect for mechanical binding.
  8. Inspect and clean connectors at the motor, relay, and BCM. Repair corroded pins or damaged wiring; perform solder/heat-shrink or OEM repair techniques as required.
  9. If wiring and components test OK, check BCM outputs and input signals with a scope or scan tool; consider BCM software updates or replacement if controller outputs are faulty.
  10. After repair, clear codes and road-test; re-scan to confirm B1244 does not return.

Likely causes

  • Faulty rear wiper relay
  • Blown fuse for rear wiper circuit
  • Open or short in wiring to relay or wiper motor
  • Poor ground connection at motor or relay
  • Corroded connector at relay or motor

Fault status

⚠️ Status
Rear wiper relay circuit fault detected. Possible relay, fuse, wiring, connector or BCM output issue. Inspect relay/fuse, wiring and grounds; test motor operation and correct any damaged components before clearing code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1240 B1241 B1243 B1245 U0140
Repair manuals

Manual library for FIAT

26

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FIAT

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Code

B1244

LAND ROVER B — Body

/ Sport

Brand: LAND ROVER
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or sticking rear wiper relay
  • Blown fuse protecting the rear wiper circuit
  • Open, shorted or high resistance wiring between relay, wiper motor, switch and BCM
  • Corroded or loose connector or terminal at relay, motor or fuse box
  • Poor ground at wiper motor or relay ground point
  • Seized or mechanically obstructed rear wiper motor

Symptoms

  • Rear wiper inoperative (no movement)
  • Intermittent rear wiper operation
  • Rear wiper stuck in ON or OFF position
  • No audible relay click when rear wiper activated
  • Blown fuse after attempting to operate rear wiper
  • Other body electrical anomalies if BCM output affected

What to check

  • Read stored DTCs and freeze frame data with a diagnostic scanner; note any related body module codes
  • Visual inspection of rear wiper relay, fuses and fuse box for damage or corrosion
  • Inspect wiring harness and connectors for damage, corrosion, pin push-out or water ingress
  • Check ground(s) for continuity and signs of corrosion; clean and secure grounding points
  • Operate rear wiper switch while listening for relay click and observing fuse behavior
  • Swap relay with identical known-good relay (if available) to check function

Signal parameters

  • Supply voltage at relay supply terminal: ~12 V with ignition ON (11–14 V typical)
  • Control signal from BCM/switch to relay coil: near 0 V (ground) when activated or near battery voltage when deactivated depending on circuit type; expect a distinct change when switch is operated
  • Relay coil resistance (typical small automotive relay): ~50–200 Ω (varies by relay)
  • Wiper motor current draw while running: typically 1–8 A (measure with ammeter); large spikes at start ok but excessive continuous current suggests mechanical/seized motor or short

Diagnostic algorithm

  1. Connect a diagnostic scanner; record DTCs and related modules. Clear codes and attempt to reproduce B1244.
  2. Visually inspect fuse(s) and relay(s) for the rear wiper. Replace any blown fuse and note if it blows again on test.
  3. Swap the rear wiper relay with a known-good identical relay and re-test to see if fault follows the relay.
  4. With ignition ON, measure battery voltage at the relay power terminal. Confirm fused supply is present and stable.
  5. Operate the rear wiper switch while probing the relay coil/control terminal. Verify the controller sends the expected signal (voltage change or ground) to energize the coil.
  6. Check continuity between relay output and rear wiper motor positive terminal. Check continuity to ground from the motor body/ground terminal.
  7. Bench-test the rear wiper motor by applying fused 12 V directly to its power/ground to confirm operation and measure running current. Inspect for mechanical binding.
  8. Inspect and clean connectors at the motor, relay, and BCM. Repair corroded pins or damaged wiring; perform solder/heat-shrink or OEM repair techniques as required.
  9. If wiring and components test OK, check BCM outputs and input signals with a scope or scan tool; consider BCM software updates or replacement if controller outputs are faulty.
  10. After repair, clear codes and road-test; re-scan to confirm B1244 does not return.

Likely causes

  • Faulty rear wiper relay
  • Blown fuse for rear wiper circuit
  • Open or short in wiring to relay or wiper motor
  • Poor ground connection at motor or relay
  • Corroded connector at relay or motor

Fault status

⚠️ Status
Rear wiper relay circuit fault detected. Possible relay, fuse, wiring, connector or BCM output issue. Inspect relay/fuse, wiring and grounds; test motor operation and correct any damaged components before clearing code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1240 B1241 B1243 B1245 U0140
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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Code

B1244

Other B — Body

Wiper Rear Motor Run Relay Circuit Failure

Brand: Other
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or sticking rear wiper relay
  • Blown fuse protecting the rear wiper circuit
  • Open, shorted or high resistance wiring between relay, wiper motor, switch and BCM
  • Corroded or loose connector or terminal at relay, motor or fuse box
  • Poor ground at wiper motor or relay ground point
  • Seized or mechanically obstructed rear wiper motor

Symptoms

  • Rear wiper inoperative (no movement)
  • Intermittent rear wiper operation
  • Rear wiper stuck in ON or OFF position
  • No audible relay click when rear wiper activated
  • Blown fuse after attempting to operate rear wiper
  • Other body electrical anomalies if BCM output affected

What to check

  • Read stored DTCs and freeze frame data with a diagnostic scanner; note any related body module codes
  • Visual inspection of rear wiper relay, fuses and fuse box for damage or corrosion
  • Inspect wiring harness and connectors for damage, corrosion, pin push-out or water ingress
  • Check ground(s) for continuity and signs of corrosion; clean and secure grounding points
  • Operate rear wiper switch while listening for relay click and observing fuse behavior
  • Swap relay with identical known-good relay (if available) to check function

Signal parameters

  • Supply voltage at relay supply terminal: ~12 V with ignition ON (11–14 V typical)
  • Control signal from BCM/switch to relay coil: near 0 V (ground) when activated or near battery voltage when deactivated depending on circuit type; expect a distinct change when switch is operated
  • Relay coil resistance (typical small automotive relay): ~50–200 Ω (varies by relay)
  • Wiper motor current draw while running: typically 1–8 A (measure with ammeter); large spikes at start ok but excessive continuous current suggests mechanical/seized motor or short

Diagnostic algorithm

  1. Connect a diagnostic scanner; record DTCs and related modules. Clear codes and attempt to reproduce B1244.
  2. Visually inspect fuse(s) and relay(s) for the rear wiper. Replace any blown fuse and note if it blows again on test.
  3. Swap the rear wiper relay with a known-good identical relay and re-test to see if fault follows the relay.
  4. With ignition ON, measure battery voltage at the relay power terminal. Confirm fused supply is present and stable.
  5. Operate the rear wiper switch while probing the relay coil/control terminal. Verify the controller sends the expected signal (voltage change or ground) to energize the coil.
  6. Check continuity between relay output and rear wiper motor positive terminal. Check continuity to ground from the motor body/ground terminal.
  7. Bench-test the rear wiper motor by applying fused 12 V directly to its power/ground to confirm operation and measure running current. Inspect for mechanical binding.
  8. Inspect and clean connectors at the motor, relay, and BCM. Repair corroded pins or damaged wiring; perform solder/heat-shrink or OEM repair techniques as required.
  9. If wiring and components test OK, check BCM outputs and input signals with a scope or scan tool; consider BCM software updates or replacement if controller outputs are faulty.
  10. After repair, clear codes and road-test; re-scan to confirm B1244 does not return.

Likely causes

  • Faulty rear wiper relay
  • Blown fuse for rear wiper circuit
  • Open or short in wiring to relay or wiper motor
  • Poor ground connection at motor or relay
  • Corroded connector at relay or motor

Fault status

⚠️ Status
Rear wiper relay circuit fault detected. Possible relay, fuse, wiring, connector or BCM output issue. Inspect relay/fuse, wiring and grounds; test motor operation and correct any damaged components before clearing code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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B1240 B1241 B1243 B1245 U0140
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