Suzuki Wagon R Manual page 3792

C-25: Knock Sensor Signal Circuit
Test Table
Test
T01 Check: Short to Voltage of Signal Circuit
• Ignition OFF
• Disconnect wiring harness connector from:
Knock sensor
• Ignition ON
• Measure voltage between the following terminals:
Knock sensor - Wiring harness connector (wiring harness side) ter-
minals C15-1, C15-2
&
Ground
Yes: T02
T02 Check: Short to Ground of Signal Circuit
• Ignition OFF
• Disconnect wiring harness connector from:
ECM (Wiring Harness Connector C36)
&
Radiator fan relay
• Measure resistance between the following terminals:
Knock sensor - Wiring harness connector (wiring harness side) ter-
minals C15-1, C15-2
&
Ground
Yes: T03
T03 Check: Interruption of Signal Circuit
• Connect fused jumper wire to:
Knock sensor - Wiring harness connector (wiring harness side) ter-
minal C15-1
&
Knock sensor - Wiring harness connector (wiring harness side) ter-
minal C15-2
• Measure resistance between the following terminals:
ECM - Wiring harness connector (wiring harness side) terminal
C36-52
&
ECM - Wiring harness connector (wiring harness side) terminal
C36-20
Yes: E01
ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z10XEP AND Z12XEP ENGINES) 6-4-111
Work Order Description Nominal Value
less than 0.3 V
No: E04
greater than 500 kΩ
No: E03
less than 5 Ω
No: E02