[35B] ANTI-SKID BRAKING SYSTEM (ABS) - - TROUBLESHOOTING - CHECK AT ABS-ECU | PRINT PAGE / INDEX / PRIOR / NEXT

| CHECK AT ABS-ECU
| Use the following steps to remove the connector cover and measure the terminal voltage.
| Move the lock lever of the ABS-ECU connector as shown in the illustration, and then disconnect the ABS-ECU connector.
| Insert the flat-tipped screwdriver to the aperture (arrow area as shown in the illustration) between ABS-ECU connector and connector cover to disengage the claw and remove the connector cover.
| TERMINAL VOLTAGE CHECK CHART
| Measure the voltages between terminals (2) and (18) (earth terminals) and each respective terminal. The terminal layouts are shown in the illustrations below. NOTE: Do not measure terminal voltage for approximately three seconds after the ignition switch is turned "ON." The ABS-ECU performs the initial check during that period.
Terminal No. | Check item | Checking requirements | Normal condition
--- | --- | --- | ---
1 | Solenoid valve power supply | Always | System voltage
3 | Stop lamp switch input | Ignition switch: "ON" | Stop lamp switch: "ON" | System voltage
Stop lamp switch: "OFF" | Approximately 0 V
4 | Diagnosis changeover input | When the MUT-II/III is connected | Approximately 0 V
When the MUT-II/III is not connected | System voltage
8 | G-sensor earth <4WD> | Always | Approximately 0 V
12 | ABS-ECU warning lamp transistor output | Ignition switch: "ON" | When the lamp is switched off | Approximately 0 V
When the lamp is illuminated | System voltage
13 | MUT-II/III | When the MUT-II/III is connected | Serial communication with MUT-II/III
When the MUT-II/III is not connected | Approximately 0 V
15 | G-sensor input <4WD> | Ignition switch: "ON" Horizontal state of vehicle | 2.4 - 2.6 V
19 | Motor power supply | Always | System voltage
20 | ABS-ECU power supply | Ignition switch: "ON" | System voltage
Ignition switch: "START" | Approximately 0 V
| RESISTANCE AND CONTINUITY BETWEEN HARNESS-SIDE CONNECTOR TERMINALS
| Turn the ignition switch to the "LOCK" (OFF) position and disconnect the ABS-ECU connectors before checking resistance and continuity. Check the resistance and continuity between the terminals indicated in the table below. The terminal layout is shown in the illustration.
ABS-ECU terminal No. | Signal | Normal condition
--- | --- | ---
9 - 10 | Front-right ABS sensor | 1.24 - 1.64 kΩ
11 - 17 | Rear-right ABS sensor | 1.24 - 1.64 kΩ
16 - 26 | Front-left ABS sensor | 1.24 - 1.64 kΩ
27 - 28 | Rear-left ABS sensor | 1.24 - 1.64 kΩ
2 - body earth | Earth | Less than 2 ohms
18 - body earth | Earth | Less than 2 ohms

[35B] ANTI-SKID BRAKING SYSTEM (ABS) - - TROUBLESHOOTING - CHECK AT ABS-ECU | PRINT PAGE / INDEX / PRIOR / NEXT

©2004 Mitsubishi Motors Corporation